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source: trunk/UTIL/PYTHON/planetoplot_v2/ppclass.py @ 1159

Last change on this file since 1159 was 1158, checked in by aslmd, 11 years ago
planetoplot. added treatment for xmin xmax from main pp class.
File size: 99.6 KB

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1	###############################################
2	## PLANETOPLOT ##
3	## --> PPCLASS ##
4	## A generic and versatile Python module ##
5	## ... to read netCDF files and plot ##
6	###############################################
7	## Author: Aymeric Spiga. 02-03/2013 ##
8	###############################################
9	# python built-in librairies
10	import os
11	import time as timelib
12	import pickle
13	# added librairies
14	import numpy as np
15	import netCDF4
16	import matplotlib.pyplot as mpl
17	# personal librairies
18	import ppplot
19	import ppcompute
20	###############################################
21
22	###################################
23	#### HEADER ##
24	#### ... executed when imported ##
25	###################################
26	# where settings files are located...
27	# ... this can be hardcoded here
28	whereset = None
29	whereset = ppcompute.findset(whereset)
30	# ... we load user-defined automatic settings from set_ppclass.txt
31	zefile = "set_ppclass.txt"
32	glob_listx = [] ; glob_listy = [] ; glob_listz = [] ; glob_listt = []
33	glob_listarea = []
34	try:
35	f = open(whereset+zefile, 'r') ; lines = f.readlines()
36	for stuff in lines[5].strip().split(';'): glob_listx.append(stuff)
37	for stuff in lines[8].strip().split(';'): glob_listy.append(stuff)
38	for stuff in lines[11].strip().split(';'): glob_listz.append(stuff)
39	for stuff in lines[14].strip().split(';'): glob_listt.append(stuff)
40	for stuff in lines[17].strip().split(';'): glob_listarea.append(stuff)
41	except IOError:
42	print "PPCLASS warning: "+zefile+" not in "+whereset+" ; no presets."
43
44	##################################
45	#### USEFUL GENERIC FUNCTIONS ####
46	##################################
47
48	# inspect variables and dimensions in a netCDF file
49	def inspect(filename):
50	print "---------------------------------------------------------------"
51	print "**** INSPECT FILE",filename
52	test = netCDF4.Dataset(filename)
53	print "---------------------------------------------------------------"
54	print "**** DIMENSIONS:"
55	for obj in test.dimensions.values(): print obj
56	print "---------------------------------------------------------------"
57	print "**** VARIABLES: ",test.variables.keys()
58	print "---------------------------------------------------------------"
59	findinlist(test,glob_listx,"**** FOUND X-AXIS ---> ")
60	findinlist(test,glob_listy,"**** FOUND Y-AXIS ---> ")
61	findinlist(test,glob_listz,"**** FOUND Z-AXIS ---> ")
62	findinlist(test,glob_listt,"**** FOUND T-AXIS ---> ")
63	print "**** ( according to settings in "+whereset+zefile+" )"
64	print "---------------------------------------------------------------"
65	# -- function defined for the above function inspect
66	def findinlist(netcdfobj,extlist,message):
67	found = False
68	for c in extlist:
69	if c in netcdfobj.variables.keys():
70	found = True
71	output = message+str(c)
72	if c in netcdfobj.dimensions.keys():
73	output = output+" ---- has "+str(len(netcdfobj.dimensions[c]))+" values"
74	try: output = output + " ---- from "+str(netcdfobj.variables[c][0])+" to "+str(netcdfobj.variables[c][-1])
75	except: pass
76	print output ; output = ""
77	if not found:
78	print message+"not found. will simply use index (check out dimensions)."
79
80	# request a given attribute (and test if it is here)
81	def ncattr(filename,char):
82	nc = netCDF4.Dataset(filename)
83	if hasattr(nc,char): ncattr=getattr(nc,char)
84	return ncattr
85
86	# check a tab and exit if wrong. if just one string make it a list.
87	# (if allownumber, convert this into a string).
88	def checktab(tab,mess="",allownone=False,allownumber=False):
89	if tab is None:
90	if not allownone: print "pp.define: no "+mess ; exit()
91	else: pass
92	else:
93	if not isinstance(tab, list):
94	if isinstance(tab, str):
95	tab = [tab]
96	elif (isinstance(tab, int) or isinstance(tab, float)) and allownumber:
97	tab = [str(tab)]
98	else:
99	print "pp.define: "+mess+" should be either a string or a list of strings!" ; exit()
100	elif isinstance(tab, list):
101	if isinstance(tab[0],str):
102	pass
103	elif (isinstance(tab[0], int) or isinstance(tab[0], float)) and allownumber:
104	for iii in range(len(tab)): tab[iii] = str(tab[iii])
105	else:
106	print "pp.define: "+mess+" should be either a string or a list of strings!" ; exit()
107	return tab
108
109	# determine which method is to be applied to a given dimension
110	def findmethod(tab):
111	if tab is None: output = "free"
112	elif tab[0,0] != tab[0,1]: output = "comp"
113	else: output = "fixed"
114	return output
115
116	# read what is given by the user (version of T. Navarro)
117	def readslices(saxis):
118	if saxis == None:
119	zesaxis = None
120	else:
121	zesaxis = np.empty((len(saxis),2))
122	for i in range(len(saxis)):
123	a = separatenames(saxis[i])
124	if len(a) == 1:
125	zesaxis[i,:] = float(a[0])
126	else:
127	zesaxis[i,0] = float(a[0])
128	zesaxis[i,1] = float(a[1])
129	return zesaxis
130
131	# look for comas in the input name to separate different names (files, variables,etc ..)
132	# (needed by readslices)
133	def separatenames (name):
134	if name is None: names = None
135	else:
136	names = [] ; stop = 0 ; currentname = name
137	while stop == 0:
138	indexvir = currentname.find(',')
139	if indexvir == -1: stop = 1 ; name1 = currentname
140	else: name1 = currentname[0:indexvir]
141	names = np.concatenate((names,[name1]))
142	currentname = currentname[indexvir+1:len(currentname)]
143	return names
144
145	#######################
146	### THE MAIN OBJECT ###
147	#######################
148	class pp():
149
150	# print out a help string when help is invoked on the object
151	def __repr__(self):
152	whatprint = 'pp object. \"help(pp)\" for more information\n'
153	return whatprint
154
155	# default settings
156	# -- user can define settings by two methods.
157	# -- 1. yeah = pp(file="file.nc")
158	# -- 2. yeah = pp() ; yeah.file = "file.nc"
159	def __init__(self,file=None,var="notset",\
160	filegoal=None,vargoal=None,\
161	x=None,y=None,z=None,t=None,\
162	sx=1,sy=1,\
163	sz=1,st=1,\
164	svx=1,\
165	svy=1,\
166	compute="mean",\
167	kind3d="tyx",\
168	verbose=False,\
169	quiet=False,\
170	noproj=False,\
171	superpose=False,\
172	plotin=None,\
173	forcedimplot=-1,\
174	out="gui",\
175	filename="myplot",\
176	folder="./",\
177	includedate=True,\
178	res=150.,\
179	xlabel=None,ylabel=None,\
180	xcoeff=None,ycoeff=None,\
181	xmin=None,ymin=None,\
182	xmax=None,ymax=None,\
183	nxticks=10,nyticks=10,\
184	proj=None,\
185	vmin=None,vmax=None,\
186	div=None,\
187	colorbar=None,\
188	linestyle=None,\
189	marker=None,\
190	color=None,\
191	legend=None,\
192	changetime=None,\
193	units=None,\
194	savtxt=False,\
195	modx=None,\
196	fmt=None,\
197	xp=16,yp=8,\
198	missing=1.e25,\
199	trans=None,back=None,\
200	showcb=None,\
201	logy=None,\
202	title=None):
203	self.request = None
204	self.nrequest = 0
205	self.nfin = 0 ; self.nvin = 0
206	self.nplotx = None ; self.nploty = None
207	self.nplotz = None ; self.nplott = None
208	self.status = "init"
209	self.fig = None ; self.subv = None ; self.subh = None
210	self.n = 0 ; self.howmanyplots = 0
211	self.nplot = 0
212	self.p = None
213	self.customplot = False
214	self.f = None
215	self.l = None
216	## what could be defined by the user
217	self.file = file
218	self.var = var
219	self.filegoal = filegoal
220	self.vargoal = vargoal
221	self.x = x ; self.y = y ## if None, free dimension
222	self.z = z ; self.t = t ## if None, free dimension
223	self.sx = sx ; self.sy = sy
224	self.sz = sz ; self.st = st
225	self.svx = svx
226	self.svy = svy
227	self.compute = compute
228	self.kind3d = kind3d
229	self.verbose = verbose
230	self.quiet = quiet
231	self.noproj = noproj
232	self.plotin = plotin
233	self.superpose = superpose
234	self.forcedimplot = forcedimplot
235	self.out = out
236	self.filename = filename
237	self.res = res
238	self.folder = folder
239	self.includedate = includedate
240	self.changetime = changetime
241	self.savtxt = savtxt
242	self.modx = modx
243	self.missing = missing
244	## here are user-defined plot settings
245	## -- if not None, valid on all plots in the pp() objects
246	self.xlabel = xlabel ; self.xcoeff = xcoeff
247	self.ylabel = ylabel ; self.ycoeff = ycoeff
248	self.xmin = xmin ; self.xmax = xmax
249	self.ymin = ymin ; self.ymax = ymax
250	self.proj = proj
251	self.vmin = vmin ; self.vmax = vmax
252	self.div = div
253	self.colorbar = colorbar
254	self.linestyle = linestyle
255	self.marker = marker
256	self.color = color
257	self.legend = legend
258	self.units = units
259	self.title = title
260	self.xp = xp ; self.yp = yp
261	self.nxticks = nxticks ; self.nyticks = nyticks
262	self.fmt = fmt
263	self.trans = trans ; self.back = back
264	self.showcb = showcb
265	self.logy = logy
266
267	# print status
268	def printstatus(self):
269	if not self.quiet:
270	if self.filename == "THIS_IS_A_CLONE":
271	pass
272	else:
273	print "**** PPCLASS. Done step: " + self.status
274
275	# print attributes
276	def printme(self):
277	for k, v in vars(self).items():
278	print k,v
279
280	#####################################################
281	# EMULATE OPERATORS + - * / ** << FOR PP() OBJECTS #
282	#####################################################
283
284	# define the operation <<
285	# ... e.g. obj2 << obj1
286	# ... means: get init for pp object obj2 from another pp object obj1
287	# ... (this should solve the affectation trap obj2 = obj1)
288	def __lshift__(self,other):
289	if other.__class__.__name__ == "pp":
290	self.file = other.file
291	self.var = other.var
292	self.filegoal = other.filegoal
293	self.vargoal = other.vargoal
294	self.x = other.x ; self.y = other.y ## if None, free dimension
295	self.z = other.z ; self.t = other.t ## if None, free dimension
296	self.sx = other.sx ; self.sy = other.sy
297	self.sz = other.sz ; self.st = other.st
298	self.compute = other.compute
299	self.kind3d = other.kind3d
300	self.verbose = other.verbose
301	self.noproj = other.noproj
302	self.plotin = other.plotin
303	self.superpose = other.superpose
304	self.forcedimplot = other.forcedimplot
305	self.out = other.out
306	self.filename = other.filename
307	self.folder = other.folder
308	self.xlabel = other.xlabel ; self.xcoeff = other.xcoeff
309	self.ylabel = other.ylabel ; self.ycoeff = other.ycoeff
310	self.proj = other.proj
311	self.vmin = other.vmin ; self.vmax = other.vmax
312	self.xmin = other.xmin ; self.xmax = other.xmax
313	self.ymin = other.ymin ; self.ymax = other.ymax
314	self.div = other.div
315	self.colorbar = other.colorbar
316	self.linestyle = other.linestyle
317	self.marker = other.marker
318	self.color = other.color
319	self.legend = other.legend
320	self.units = other.units
321	self.title = other.title
322	self.includedate = other.includedate
323	self.changetime = other.changetime
324	self.savtxt = other.savtxt
325	self.modx = other.modx
326	self.xp = other.xp ; self.yp = other.yp
327	self.missing = other.missing
328	self.nxticks = other.nxticks ; self.nyticks = other.nyticks
329	self.fmt = other.fmt
330	self.trans = other.trans ; self.back = other.back
331	self.showcb = other.showcb
332	self.logy = other.logy
333	else:
334	print "!! ERROR !! argument must be a pp object." ; exit()
335
336	# check the compatibility of two objects for operations
337	# --> if other is a pp class, test sizes and return isnum = False
338	# --> if other is an int or a float, return isnum = True
339	# --> otherwise, just print an error and exit
340	def checktwo(self,other):
341	if other.__class__.__name__ == "pp":
342	isnum = False
343	if self.status in ["init","defined"] or other.status in ["init","define"]:
344	print "!! ERROR !! Please use .retrieve to get fields for plots with one of your pp operands." ; exit()
345	if self.nfin != other.nfin or \
346	self.nvin != other.nvin or \
347	self.nplott != other.nplott or \
348	self.nplotz != other.nploty or \
349	self.nploty != other.nploty or \
350	self.nplotx != other.nplotx :
351	print "!! ERROR !! The two operands do not have the same number of files, variables, t z y x requests."
352	exit()
353	elif isinstance(other,int) or isinstance(other,float):
354	isnum = True
355	else:
356	print "!! ERROR !! The operand is neither a pp class nor an integer or a float." ; exit()
357	return isnum
358
359	# define a selective copy of a pp() object for operations
360	# ... copy.copy() is not conservative (still acts like a pointer)
361	# ... copy.deepcopy() does not work with netCDF objects
362	# so what is done here is a copy of everything except
363	# (to avoid sharing with self and therefore modifying self through operations)
364	# - request attribute of pp() object
365	# - field attribute of the onerequest() objects
366	def selective_copy(self):
367	if self.status in ["init","defined"]:
368	print "!! ERROR !! Please use .retrieve to get fields for the object you want to copy from." ; exit()
369	the_clone = pp()
370	for k, v in vars(self).items():
371	if k != "request":
372	setattr(the_clone,k,v)
373	the_clone.verbose = False
374	the_clone.filename = "THIS_IS_A_CLONE" # trick to avoid additional outputs
375	the_clone.define()
376	for i in range(self.nfin):
377	for j in range(self.nvin):
378	for t in range(self.nplott):
379	for z in range(self.nplotz):
380	for y in range(self.nploty):
381	for x in range(self.nplotx):
382	obj_ref = self.request[i][j][t][z][y][x]
383	obj = the_clone.request[i][j][t][z][y][x]
384	for k, v in vars(obj_ref).items():
385	if k != "field":
386	setattr(obj,k,v)
387	the_clone.status = "retrieved"
388	the_clone.filename = self.filename
389	return the_clone
390
391	# define the operation + on two objects. or with an int/float.
392	# ... with selective_copy the self object is not modified.
393	def __add__(self,other):
394	isnum = self.checktwo(other)
395	the_clone = self.selective_copy()
396	for i in range(self.nfin):
397	for j in range(self.nvin):
398	for t in range(self.nplott):
399	for z in range(self.nplotz):
400	for y in range(self.nploty):
401	for x in range(self.nplotx):
402	obj = the_clone.request[i][j][t][z][y][x]
403	obj_ref = self.request[i][j][t][z][y][x]
404	if not isnum:
405	ope = other.request[i][j][t][z][y][x].field
406	if ope.ndim == 0:
407	ope = float(ope) # if no dimension then this means that ope is a single value (not to be kept as an array)
408	elif obj_ref.field.shape != ope.shape:
409	print "!! ERROR !! The two fields for operation do not have the same shape.",obj_ref.field.shape,ope.shape
410	exit()
411	else:
412	ope = other
413	goal = self.vargoal[j] + self.filegoal[i]
414	if ("vector" in goal) or ("contour" in goal):
415	if self.verbose: print "!! WARNING !! No operation was made on contours and vectors. This can be debatted actually."
416	obj.field = obj_ref.field
417	else:
418	obj.field = obj_ref.field + ope
419	return the_clone
420
421	# define the operation - on two objects. or with an int/float.
422	# ... with selective_copy the self object is not modified.
423	def __sub__(self,other):
424	isnum = self.checktwo(other)
425	the_clone = self.selective_copy()
426	for i in range(self.nfin):
427	for j in range(self.nvin):
428	for t in range(self.nplott):
429	for z in range(self.nplotz):
430	for y in range(self.nploty):
431	for x in range(self.nplotx):
432	obj = the_clone.request[i][j][t][z][y][x]
433	obj_ref = self.request[i][j][t][z][y][x]
434	if not isnum:
435	ope = other.request[i][j][t][z][y][x].field
436	if ope.ndim == 0:
437	ope = float(ope) # if no dimension then this means that ope is a single value (not to be kept as an array)
438	elif obj_ref.field.shape != ope.shape:
439	print "!! ERROR !! The two fields for operation do not have the same shape.",obj_ref.field.shape,ope.shape
440	exit()
441	else:
442	ope = other
443	goal = self.vargoal[j] + self.filegoal[i]
444	if ("vector" in goal) or ("contour" in goal):
445	if self.verbose: print "!! WARNING !! No operation was made on contours and vectors. This can be debatted actually."
446	obj.field = obj_ref.field
447	else:
448	obj.field = obj_ref.field - ope
449	return the_clone
450
451	# define the operation * on two objects. or with an int/float.
452	# ... with selective_copy the self object is not modified.
453	def __mul__(self,other):
454	isnum = self.checktwo(other)
455	the_clone = self.selective_copy()
456	for i in range(self.nfin):
457	for j in range(self.nvin):
458	for t in range(self.nplott):
459	for z in range(self.nplotz):
460	for y in range(self.nploty):
461	for x in range(self.nplotx):
462	obj = the_clone.request[i][j][t][z][y][x]
463	obj_ref = self.request[i][j][t][z][y][x]
464	if not isnum:
465	ope = other.request[i][j][t][z][y][x].field
466	if ope.ndim == 0:
467	ope = float(ope) # if no dimension then this means that ope is a single value (not to be kept as an array)
468	elif obj_ref.field.shape != ope.shape:
469	print "!! ERROR !! The two fields for operation do not have the same shape.",obj_ref.field.shape,ope.shape
470	exit()
471	else:
472	ope = other
473	goal = self.vargoal[j] + self.filegoal[i]
474	if ("vector" in goal) or ("contour" in goal):
475	if self.verbose: print "!! WARNING !! No operation was made on contours and vectors. This can be debatted actually."
476	obj.field = obj_ref.field
477	else:
478	obj.field = obj_ref.field * ope
479	return the_clone
480
481	# define the operation / on two objects. or with an int/float.
482	# ... with selective_copy the self object is not modified.
483	def __div__(self,other):
484	isnum = self.checktwo(other)
485	the_clone = self.selective_copy()
486	for i in range(self.nfin):
487	for j in range(self.nvin):
488	for t in range(self.nplott):
489	for z in range(self.nplotz):
490	for y in range(self.nploty):
491	for x in range(self.nplotx):
492	obj = the_clone.request[i][j][t][z][y][x]
493	obj_ref = self.request[i][j][t][z][y][x]
494	if not isnum:
495	ope = other.request[i][j][t][z][y][x].field
496	if ope.ndim == 0:
497	ope = float(ope) # if no dimension then this means that ope is a single value (not to be kept as an array)
498	elif obj_ref.field.shape != ope.shape:
499	print "!! ERROR !! The two fields for operation do not have the same shape.",obj_ref.field.shape,ope.shape
500	exit()
501	else:
502	ope = other
503	goal = self.vargoal[j] + self.filegoal[i]
504	if ("vector" in goal) or ("contour" in goal):
505	if self.verbose: print "!! WARNING !! No operation was made on contours and vectors. This can be debatted actually."
506	obj.field = obj_ref.field
507	else:
508	obj.field = obj_ref.field / ope
509	return the_clone
510
511	# define the reverse operation float/int + object
512	def __radd__(self,other):
513	isnum = self.checktwo(other)
514	if not isnum: print "!! ERROR !! Operand should be a number" ; exit()
515	return self.__add__(other)
516
517	# define the reverse operation float/int - object
518	def __rsub__(self,other):
519	isnum = self.checktwo(other)
520	if not isnum: print "!! ERROR !! Operand should be a number" ; exit()
521	return self.__sub__(other)
522
523	# define the reverse operation float/int * object
524	def __rmul__(self,other):
525	isnum = self.checktwo(other)
526	if not isnum: print "!! ERROR !! Operand should be a number" ; exit()
527	return self.__mul__(other)
528
529	# define the reverse operation float/int / object
530	def __rdiv__(self,other):
531	isnum = self.checktwo(other)
532	if not isnum: print "!! ERROR !! Operand should be a number" ; exit()
533	return self.__div__(other)
534
535	# define the operation ** on one object.
536	# ... with selective_copy the self object is not modified.
537	def __pow__(self,num):
538	the_clone = self.selective_copy()
539	if isinstance(num,int) or isinstance(num,float):
540	for i in range(self.nfin):
541	for j in range(self.nvin):
542	for t in range(self.nplott):
543	for z in range(self.nplotz):
544	for y in range(self.nploty):
545	for x in range(self.nplotx):
546	obj = the_clone.request[i][j][t][z][y][x]
547	obj_ref = self.request[i][j][t][z][y][x]
548	goal = self.vargoal[j] + self.filegoal[i]
549	if ("vector" in goal) or ("contour" in goal):
550	if self.verbose: print "!! WARNING !! No operation was made on contours and vectors. This can be debatted actually."
551	obj.field = obj_ref.field
552	else:
553	obj.field = obj_ref.field ** num
554	else:
555	print "!! ERROR !! To define a power, either an int or a float is needed." ; exit()
556	return the_clone
557
558	### TBD: reverse power? for exponentials?
559
560	##############################################################################################
561	# define method
562	# ---------
563	# ... (file and var are either one string or a vector of strings)
564	# ... the goal of define is to define a 2D array of onerequest() objects (see class below)
565	# given the number of file, var, x, y, z, t asked by the user
566	# ... objectives for file or var are given through filegoal and vargoal
567	# --> possible values: main contour vector
568	# ---------
569	# ... then onerequest() objects are being defined more precisely
570	# by getting index_x index_y index_z index_t
571	# and setting method_x method_y method_z method_t to either
572	# - "free" for free dimensions (plot dimensions)
573	# - "comp" for averages, max, min
574	# - "fixed" for fixed dimensions (possibly several i.e. multislice)
575	##############################################################################################
576	def define(self):
577	self.printstatus()
578	# initial check and get dimensions
579	self.file = checktab(self.file,mess="file")
580	self.nfin = len(self.file)
581	if self.verbose:
582	for i in range(self.nfin): inspect(self.file[i])
583	self.var = checktab(self.var,mess="var")
584	self.nvin = len(self.var)
585	# check goal tabs for files and variables
586	# ... default is to plot everything
587	if self.filegoal is None: self.filegoal = ["main"]*self.nfin
588	if self.vargoal is None: self.vargoal = ["main"]*self.nvin
589	self.filegoal = checktab(self.filegoal, mess="filegoal")
590	self.vargoal = checktab(self.vargoal, mess="vargoal")
591	if len(self.filegoal) != self.nfin: print "!! ERROR !! filegoal must be the same size as file." ; exit()
592	if len(self.vargoal) != self.nvin: print "!! ERROR !! vargoal must be the same size as var." ; exit()
593	# variables: initial check
594	self.x = checktab(self.x,mess="x",allownone=True,allownumber=True)
595	self.y = checktab(self.y,mess="y",allownone=True,allownumber=True)
596	self.z = checktab(self.z,mess="z",allownone=True,allownumber=True)
597	self.t = checktab(self.t,mess="t",allownone=True,allownumber=True)
598	# for the moment not var- nor file- dependent.
599	# but this could be the case.
600	sx = readslices(self.x) ; sy = readslices(self.y)
601	sz = readslices(self.z) ; st = readslices(self.t)
602	# get methods
603	mx = findmethod(sx) ; my = findmethod(sy)
604	mz = findmethod(sz) ; mt = findmethod(st)
605	# get number of plots to be done
606	if mx in ["fixed","comp"]: self.nplotx = sx.size/2
607	else: self.nplotx = 1
608	if my in ["fixed","comp"]: self.nploty = sy.size/2
609	else: self.nploty = 1
610	if mz in ["fixed","comp"]: self.nplotz = sz.size/2
611	else: self.nplotz = 1
612	if mt in ["fixed","comp"]: self.nplott = st.size/2
613	else: self.nplott = 1
614	if self.verbose: print "**** OK. Plots over x,y,z,t -->",self.nplotx,self.nploty,self.nplotz,self.nplott
615	# create the list of onerequest() objects
616	self.request = [[[[[[ \
617	onerequest() \
618	for x in range(self.nplotx)] for y in range(self.nploty)] \
619	for z in range(self.nplotz)] for t in range(self.nplott)] \
620	for j in range(self.nvin)] for i in range(self.nfin)]
621	# store how many onerequest() objects are in self.request
622	self.nrequest = self.nfinself.nvinself.nplotxself.nplotyself.nplotz*self.nplott
623	# loop on onerequest() objects
624	for i in range(self.nfin):
625	for j in range(self.nvin):
626	for t in range(self.nplott):
627	for z in range(self.nplotz):
628	for y in range(self.nploty):
629	for x in range(self.nplotx):
630	obj = self.request[i][j][t][z][y][x]
631	# fill in names for files and variables
632	obj.verbose = self.verbose
633	obj.file = self.file[i]
634	obj.var = self.var[j]
635	# get methods
636	obj.method_x = mx ; obj.method_y = my
637	obj.method_z = mz ; obj.method_t = mt
638	# indicate the computation method
639	obj.compute = self.compute
640	# indicate the kind of 3D fields
641	obj.kind3d = self.kind3d
642	# open the files (the same file might be opened several times but this is cheap)
643	obj.openfile()
644	### get x,y,z,t dimensions from file
645	obj.getdim()
646	### possible time axis change
647	obj.changetime = self.changetime
648	obj.performtimechange()
649	# get strides
650	obj.sx = self.sx ; obj.sy = self.sy
651	obj.sz = self.sz ; obj.st = self.st
652	### get index
653	obj.getindextime(dalist=st,ind=t)
654	obj.getindexvert(dalist=sz,ind=z)
655	obj.getindexhori(dalistx=sx,dalisty=sy,indx=x,indy=y)
656	# missing value
657	obj.missing = self.missing
658	# change status
659	self.status = "defined"
660	return self
661
662	##############################################################################################
663	# retrieve method
664	# --> for each element onerequest() in the array, get field .var from .f file
665	# --> see below the onerequest() class:
666	# - only get what is needed for computing and plotting
667	# - averages etc... are computed here
668	# --> RESULT: each onerequest() object has now its attribute .field filled
669	# --> if one wants to perform operations on fields, this should be done after retrieve()
670	##############################################################################################
671	def retrieve(self):
672	self.printstatus()
673	# check if things were done OK before
674	if self.status != "defined": print "!! ERROR !! Please use .define() to define your pp object." ; exit()
675	## create the list of f() and l() objects
676	## --> so that the user can easily access values (and labels for easy exploration)
677	## --> see example easy_get_field
678	self.f = [ [] for iii in range(self.nrequest) ]
679	self.l = [ [] for iii in range(self.nrequest) ]
680	count = 0
681	## first get fields
682	## ... only what is needed is extracted from the files
683	## ... and computations are performed
684	for i in range(self.nfin):
685	for j in range(self.nvin):
686	for t in range(self.nplott):
687	for z in range(self.nplotz):
688	for y in range(self.nploty):
689	for x in range(self.nplotx):
690	obj = self.request[i][j][t][z][y][x]
691	obj.getfield()
692	if self.compute != "nothing":
693	obj.computations()
694	# save fields in self.f for the user
695	self.f[count] = obj.field
696	# save a legend in self.l for the user
697	self.l[count] = "_"
698	if self.nfin > 1: self.l[count] = self.l[count] + "f=#"+str(int(i+1))+'_'
699	if self.nvin > 1: self.l[count] = self.l[count] + "v="+obj.var+'_'
700	if self.nplotx > 1: self.l[count] = self.l[count] + "x="+str(self.x[x])+'_'
701	if self.nploty > 1: self.l[count] = self.l[count] + "y="+str(self.y[y])+'_'
702	if self.nplotz > 1: self.l[count] = self.l[count] + "z="+str(self.z[z])+'_'
703	if self.nplott > 1: self.l[count] = self.l[count] + "t="+str(self.t[t])+'_'
704	# close the file
705	obj.closefile()
706	count = count + 1
707	## make it simple: self.f is simply the data array if self.nrequest=1
708	if self.nrequest == 1: self.f = self.f[0]
709	# change status
710	self.status = "retrieved"
711	return self
712
713	##########################################################
714	# get: a shortcut method for the define + retrieve chain #
715	##########################################################
716	def get(self):
717	self.define()
718	self.retrieve()
719	return self
720
721	###########################################################
722	# getf: a shortcut method for the define + retrieve chain #
723	# ... in which the output is self.f #
724	# ... and the ppclass is kept quiet #
725	###########################################################
726	def getf(self):
727	self.quiet = True
728	self.get()
729	return self.f
730
731	############################################################
732	# getfl: a shortcut method for the define + retrieve chain #
733	# ... in which the output is self.f, self.l #
734	# ... and the ppclass is kept quiet #
735	############################################################
736	def getfl(self):
737	self.quiet = True
738	self.get()
739	return self.f,self.l
740
741	########################################
742	# smooth: smooth the field in 1D or 2D #
743	########################################
744	## TBD: smooth not OK with masked array in the end of retrieve()
745	def smooth(self,window):
746	if self.verbose:
747	print "!! WARNING !! Performing a smoothing with a window size",window
748	print "!! WARNING !! To come back to unsmoothed file, use .get() again"
749	for i in range(self.nfin):
750	for j in range(self.nvin):
751	for t in range(self.nplott):
752	for z in range(self.nplotz):
753	for y in range(self.nploty):
754	for x in range(self.nplotx):
755	obj = self.request[i][j][t][z][y][x]
756	if obj.field.ndim == 1:
757	print "!! ERROR !! 1D smoothing not supported yet because reduces array sizes."
758	exit()
759	# TBD TBD TBD
760	#obj.field = ppcompute.smooth1d(obj.field,window=window)
761	elif obj.field.ndim == 2:
762	obj.field = ppcompute.smooth2d(obj.field,window=window)
763	#obj.field = ppcompute.smooth2diter(obj.field,n=window)
764
765	##############################################################################################
766	# defineplot method
767	# --> defineplot first defines arrays of plot objects and set each of them
768	# ... simple looping except cases where goal is not main (e.g. contour or vector)
769	# --> principle: each onerequest() object gives birth to a subplot
770	# --> defineplot vs. makeplot: defining plot and actually plotting it are clearly separated
771	# --> THE KEY OUPUT OF defineplot IS AN ARRAY self.p OF PLOT OBJECTS
772	# optional arguments
773	# --> extraplot: to indicate a number of plots to be added afterwards (use self.plotin)
774	# --> loadfile: to use self.p from a previously saved file
775	##############################################################################################
776	def defineplot(self,extraplot=0,loadfile=None):
777	# -----------------------------------------------------
778	# LOAD MODE: load a self.p object. count plots from it.
779	# -----------------------------------------------------
780	if loadfile is not None:
781	try: filehandler = open(loadfile, 'r') ; self.p = pickle.load(filehandler)
782	except IOError: print "!! ERROR !! Cannot find object file to load." ; exit()
783	self.status = "definedplot" ; self.plotin = None
784	self.nplot = len(self.p) ; self.howmanyplots = self.nplot
785	## [BUG FIX: apparently info about missing values is not saved correctly]
786	for count in range(self.nplot):
787	pl = self.p[count]
788	masked = np.ma.masked_where(np.abs(pl.f) > self.missing,pl.f)
789	pl.f = masked ; pl.f[pl.f.mask] = np.NaN
790	return #self?
791	# -----------------------------------------------------
792	# REGULAR MODE
793	# -----------------------------------------------------
794	self.printstatus()
795	# check if things were done OK before
796	if self.status in ["init","defined"]:
797	print "!! ERROR !! Please use .retrieve() to get fields for plots with your pp object." ; exit()
798	# check self.plotin (an existing fig on which to add plots afterwards)
799	if self.plotin.__class__.__name__ == "pp":
800	if self.plotin.fig is None:
801	self.plotin = None # this is an additional security in case
802	# a pp object is given without figure opened yet.
803	elif self.plotin is not None:
804	print "!! ERROR !! plotin argument must be a pp object." ; exit()
805	# initialize the array of subplot objects
806	# either something new or attributes coming from plotin object
807	if self.plotin is None: self.p = [ ]
808	else: self.p = self.plotin.p
809	# create an array of subplot objects
810	# ... in theory the order of looping can be changed without any harm
811	# ... the only important thing is to keep i,j,t,z,y,x resp. for file,var,t,z,y,x
812	count = 0
813	for i in range(self.nfin):
814	if self.filegoal[i] == "main":
815	for j in range(self.nvin):
816	if self.vargoal[j] == "main":
817	for t in range(self.nplott):
818	for z in range(self.nplotz):
819	for y in range(self.nploty):
820	for x in range(self.nplotx):
821	# look at dimension and append the right plot object
822	obj = self.request[i][j][t][z][y][x]
823	dp = obj.dimplot
824	if dp == 1 or self.forcedimplot == 1: plobj = ppplot.plot1d()
825	elif dp == 2 or self.forcedimplot == 2: plobj = ppplot.plot2d()
826	elif dp == 0: print "**** OK. VALUES VALUES VALUES",obj.field
827	else: print "!! ERROR !! 3D or 4D plots not supported" ; exit()
828	# load abscissa and ordinate in obj
829	obj.definecoord()
830	# we start to define things here before appending
831	# (convenient: could be overridden by the user before makeplot)
832	# ... the if loop is necessary so that we can loop above on the dp=0 case
833	if dp in [1,2]:
834	# and define what to do in plobj
835	plobj.invert = obj.invert_axes
836	plobj.swap = obj.swap_axes
837	# axis labels
838	plobj.xlabel = obj.absclab ; plobj.ylabel = obj.ordilab
839	# superpose or not (this is mostly for saving purpose)
840	plobj.superpose = self.superpose
841	# get title, colormaps, labels, etc.. from var
842	plobj.var = obj.var
843	plobj.define_from_var()
844	# generic 1D/2D: load field and coord in plot object
845	plobj.f = obj.field # field to be plotted
846	plobj.x = obj.absc # abscissa (or longitude)
847	plobj.y = obj.ordi # ordinate (or latitude)
848	# -- useless in 1D but not used anyway
849	# specific 1D plot stuff
850	if dp == 1:
851	# -- a default legend
852	plobj.legend = ""
853	if self.nfin > 1: plobj.legend = plobj.legend + " file #"+str(i+1)
854	if self.nvin > 1: plobj.legend = plobj.legend + " var "+plobj.var
855	if self.nplott > 1: plobj.legend = plobj.legend + " t="+str(self.t[t])
856	if self.nplotz > 1: plobj.legend = plobj.legend + " z="+str(self.z[z])
857	if self.nploty > 1: plobj.legend = plobj.legend + " y="+str(self.y[y])
858	if self.nplotx > 1: plobj.legend = plobj.legend + " x="+str(self.x[x])
859	# specific 2d plot stuff
860	if dp == 2:
861	# -- light grey background for missing values
862	if type(plobj.f).__name__ in 'MaskedArray': plobj.axisbg = '0.75'
863	# -- define if it is a map or a plot
864	plobj.mapmode = ( obj.method_x+obj.method_y == "freefree" \
865	and "grid points" not in obj.name_x \
866	and not self.noproj )
867	# possible user-defined plot settings shared by all plots
868	if self.div is not None: plobj.div = self.div
869	if self.xlabel is not None: plobj.xlabel = self.xlabel
870	if self.xcoeff is not None: plobj.xcoeff = self.xcoeff
871	if self.ylabel is not None: plobj.ylabel = self.ylabel
872	if self.ycoeff is not None: plobj.ycoeff = self.ycoeff
873	if self.title is not None: plobj.title = self.title
874	if self.units is not None: plobj.units = self.units
875	if self.colorbar is not None: plobj.colorbar = self.colorbar
876	if self.modx is not None: plobj.modx = self.modx
877	if self.nxticks is not None: plobj.nxticks = self.nxticks
878	if self.nyticks is not None: plobj.nyticks = self.nyticks
879	if self.fmt is not None: plobj.fmt = self.fmt
880	if self.showcb is not None: plobj.showcb = self.showcb
881	if self.logy is not None: plobj.logy = self.logy
882	if self.xmin is not None: plobj.xmin = self.xmin
883	if self.xmax is not None: plobj.xmax = self.xmax
884	if self.ymin is not None: plobj.ymin = self.ymin
885	if self.ymax is not None: plobj.ymax = self.ymax
886	# -- 1D specific
887	if dp == 1:
888	if self.linestyle is not None: plobj.linestyle = self.linestyle
889	if self.marker is not None: plobj.marker = self.marker
890	if self.color is not None: plobj.color = self.color
891	if self.legend is not None: plobj.legend = self.legend
892	# -- 2D specific
893	elif dp == 2:
894	if self.proj is not None and not self.noproj: plobj.proj = self.proj
895	if self.vmin is not None: plobj.vmin = self.vmin
896	if self.vmax is not None: plobj.vmax = self.vmax
897	if self.trans is not None: plobj.trans = self.trans
898	if self.back is not None: plobj.back = self.back
899	plobj.svx = self.svx
900	plobj.svy = self.svy
901	# finally append plot object
902	self.p.append(plobj)
903	count = count + 1
904	# self.nplot is number of plot to be defined in this call to defineplot()
905	# (because of self.plotin this might less than length of self.p)
906	self.nplot = count
907	# --- superimposed contours and vectors ---
908	# we have to start another loop because we need forward information
909	# TBD: there is probably a more flexible way to do that
910	count = 0
911	for i in range(self.nfin):
912	for j in range(self.nvin):
913	for t in range(self.nplott):
914	for z in range(self.nplotz):
915	for y in range(self.nploty):
916	for x in range(self.nplotx):
917	goal = self.vargoal[j] + self.filegoal[i]
918	obj = self.request[i][j][t][z][y][x]
919	if "mainmain" in goal and obj.dimplot == 2:
920	# the plot object we consider in the loop
921	plobj = self.p[count]
922	# -- see if there is a contour requested...
923	# (we use try because we might be at the end of the list)
924	found = 0
925	try: condvar = self.vargoal[j+1]
926	except: condvar = "itisok"
927	try: condfile = self.filegoal[i+1]
928	except: condfile = "itisok"
929	# ... get contour
930	##########################################
931	# NB: contour is expected to be right after main otherwise it is not displayed
932	##########################################
933	if condvar == "contour":
934	plobj.c = self.request[i][j+1][t][z][y][x].field ; found += 1
935	if condfile == "contour":
936	plobj.c = self.request[i+1][j][t][z][y][x].field ; found += 1
937	# see if there is a vector requested...
938	# (we use try because we might be at the end of the list)
939	try: condvar = self.vargoal[j+found+1]+self.vargoal[j+found+2]
940	except: condvar = "itisok"
941	try: condfile = self.filegoal[i+found+1]+self.filegoal[i+found+2]
942	except: condfile = "itisok"
943	# ... get vector and go directly to the next iteration
944	# (in some cases we would do this twice but this is cheap)
945	if "vector" in condvar:
946	plobj.vx = self.request[i][j+found+1][t][z][y][x].field
947	plobj.vy = self.request[i][j+found+2][t][z][y][x].field
948	if "vector" in condfile:
949	plobj.vx = self.request[i+found+1][j][t][z][y][x].field
950	plobj.vy = self.request[i+found+2][j][t][z][y][x].field
951	count = count + 1
952	# COUNT PLOTS. if 0 just exit.
953	# self.howmanyplots is self.nplot + possible extraplots
954	self.howmanyplots = self.nplot + extraplot
955	if self.howmanyplots > 0:
956	if self.verbose: print "**** OK. expect %i plots" % (self.howmanyplots)
957	else:
958	pass # because this means that we only had 0D values !
959	# final status
960	self.status = "definedplot"
961	return self
962
963	##############################################################################################
964	# makeplot method
965	# --> after defineplot and before makeplot, user-defined plot settings can be easily given
966	# simply by modifying the attributes of each elements of self.p
967	# --> to change only one plot setting, no need to call defineplot again before makeplot
968	# --> in the end, the array self.p of plot objects is saved for easy and convenient replotting
969	# --> see practical examples in the folder 'examples'
970	##############################################################################################
971	def makeplot(self):
972	if self.howmanyplots > 0:
973	self.printstatus()
974	# a few initial operations
975	# ------------------------
976	if "definedplot" not in self.status:
977	print "!! ERROR !! Please use .defineplot() before .makeplot() can be used with your pp object." ; exit()
978	# open a figure and define subplots
979	# ---------------------------------
980	if self.plotin is None:
981	# start from scratch
982	self.fig = ppplot.figuref(x=self.xp,y=self.yp)
983	self.subv,self.subh = ppplot.definesubplot(self.howmanyplots,self.fig)
984	self.n = 0
985	## adapted space for labels etc
986	## ... except for ortho because there is no label anyway
987	self.customplot = self.p[0].f.ndim == 2 \
988	and self.p[0].mapmode == True \
989	and self.p[0].proj not in ["ortho"]
990	if self.customplot:
991	margin = 0.07
992	self.fig.subplots_adjust(left=margin,right=1-margin,bottom=margin,top=1-margin)
993	else:
994	# start from an existing figure.
995	# extraplot must have been set in the call to the previous figure.
996	self.fig = self.plotin.fig
997	self.subv,self.subh = self.plotin.subv,self.plotin.subh
998	self.n = self.plotin.n
999	self.howmanyplots = self.plotin.howmanyplots
1000	self.customplot = self.plotin.customplot
1001	# LOOP on all subplots
1002	# NB: cannot use 'for pl in self.p' if self.plotin not None
1003	# --------------------
1004	for count in range(self.nplot):
1005	# the plot object we consider in the loop
1006	pl = self.p[self.n]
1007	# before making the plot, create a subplot. the first one is numbered 1 not 0.
1008	# ... if pl.superpose, we use only one and only figure
1009	# ... (and we have to be careful with not doing things several times)
1010	if pl.superpose:
1011	if self.n == 0:
1012	self.fig.add_subplot(1,1,1,axisbg=pl.axisbg) # define one subplot (still needed for user-defined font sizes)
1013	sav = pl.xlabel,pl.ylabel,pl.xcoeff,pl.ycoeff,pl.title,pl.swaplab # save titles and labels
1014	# possibility to color lines according to a color map
1015	# ... made so that all plots span the whole color map automatically.
1016	if self.colorbar is not None:
1017	if self.verbose: print "**** OK. We make a rainbow spaghetti plot with color map ",self.colorbar
1018	ppplot.rainbow(cb=self.colorbar,num=self.howmanyplots)
1019	else:
1020	pl.invert = False ; pl.linestyle = None # don't invert again axis
1021	# set saved titles and labels
1022	if self.plotin is None:
1023	pl.xlabel,pl.ylabel,\
1024	pl.xcoeff,pl.ycoeff,\
1025	pl.nxticks,pl.nyticks,\
1026	pl.xmin,pl.xmax,\
1027	pl.ymin,pl.ymax,\
1028	pl.title,pl.swaplab = sav
1029	else:
1030	prev_plot = self.plotin.p[self.n-1]
1031	pl.xlabel = prev_plot.xlabel ; pl.ylabel = prev_plot.ylabel
1032	pl.xcoeff = prev_plot.xcoeff ; pl.ycoeff = prev_plot.ycoeff
1033	pl.nxticks = prev_plot.nxticks ; pl.nyticks = prev_plot.nyticks
1034	pl.xmin = prev_plot.xmin ; pl.xmax = prev_plot.xmax
1035	pl.ymin = prev_plot.ymin ; pl.ymax = prev_plot.ymax
1036	pl.title = prev_plot.title ; pl.swaplab = prev_plot.swaplab
1037	else:
1038	self.fig.add_subplot(self.subv,self.subh,self.n+1,axisbg=pl.axisbg)
1039	if self.verbose: print "**** Done subplot %i / %i " %( self.n+1,self.howmanyplots )
1040	# finally make the plot
1041	pl.make()
1042	# possibly print results in a text file
1043	if self.savtxt:
1044	if self.verbose: print "**** Printing results in a text file"
1045	name = pl.var + "%04d" % self.n
1046	ppplot.writeascii(field=pl.f,absc=pl.x,name=name)
1047	# increment plot count (and propagate this in plotin)
1048	self.n = self.n+1
1049	if self.plotin is not None: self.plotin.n = self.n
1050	# once completed show the plot (cannot show intermediate plotin)
1051	# ... added a fix (customplot=True) for the label problem in basemap
1052	if not self.quiet: print "**** PPCLASS. Done step: makeplot"
1053	if (self.n == self.howmanyplots):
1054	ppplot.save(mode=self.out,filename=self.filename,folder=self.folder,custom=self.customplot,includedate=self.includedate,res=self.res)
1055	mpl.close()
1056	# SAVE A PICKLE FILE WITH THE self.p ARRAY OF OBJECTS
1057	if self.verbose: print "**** Saving session in "+self.filename + ".ppobj"
1058	savfile = self.folder + "/" + self.filename + ".ppobj"
1059	try:
1060	filehandler = open(savfile, 'w')
1061	pickle.dump(self.p, filehandler)
1062	except IOError:
1063	if self.verbose: print "!! WARNING !! Saved object file not written. Probably do not have permission to write here."
1064	return self
1065
1066	###########################################################
1067	# plot: a shortcut method for the defineplot + plot chain #
1068	###########################################################
1069	def plot(self,extraplot=0):
1070	self.defineplot(extraplot=extraplot)
1071	self.makeplot()
1072	return self
1073
1074	#######################################################
1075	# getplot: a shortcut method for the get + plot chain #
1076	#######################################################
1077	def getplot(self,extraplot=0):
1078	self.get()
1079	self.plot(extraplot=extraplot)
1080	return self
1081
1082	###################################################################
1083	# getdefineplot: a shortcut method for the get + defineplot chain #
1084	###################################################################
1085	def getdefineplot(self,extraplot=0):
1086	self.get()
1087	self.defineplot(extraplot=extraplot)
1088	return self
1089
1090	#################################################################
1091	# func: operation on two pp objects being on status 'definedplot'
1092	# this allows for one field being function of another one
1093	# e.g. u.func(v) means u will be displayed as a function of v
1094	# ... no need to do defineplot after u.func(v), makeplot directly
1095	#################################################################
1096	def func(self,other):
1097	# preamble: for this operation to work, defineplot() must have been done
1098	if self.status != "definedplot":
1099	if self.verbose: print "!! WARNING !! performing defineplot on operand"
1100	self.defineplot()
1101	if other.status != "definedplot":
1102	if self.verbose: print "!! WARNING !! performing defineplot on operand"
1103	other.defineplot()
1104	# check total number of plots
1105	if self.howmanyplots != other.howmanyplots:
1106	print "!! ERROR !! The two operands do not have the same number of subplots."
1107	exit()
1108	# and now operation.
1109	count = 0
1110	while count < self.howmanyplots:
1111	sobj = self.p[count] ; oobj = other.p[count]
1112	if sobj.f.ndim !=1 or oobj.f.ndim !=1:
1113	if self.verbose: print "!! WARNING !! Flattening arrays because more than one-dimensional."
1114	sobj.f = np.ravel(sobj.f)
1115	oobj.f = np.ravel(oobj.f)
1116	sobj.x = oobj.f
1117	sobj.xlabel = oobj.ylabel
1118	if sobj.x.size > sobj.f.size:
1119	if self.verbose:
1120	print "!! WARNING !! Trying to define y=f(x) with x and y not at the same size.",sobj.x.size,sobj.f.size
1121	print "!! WARNING !! Modifying x to fit y size but please check."
1122	sobj.x = sobj.x[0:sobj.f.size]
1123	count = count + 1
1124	return self
1125
1126	###########################################################
1127	# copyopt: get options from e.g. a parser
1128	# ... allow for simple scripting and user-defined settings
1129	# ... must be called between defineplot and makeplot
1130	# REQUIRED: attributes of opt must be the same as in the pp object
1131	###########################################################
1132	def getopt(self,opt):
1133	# -- if only one, or less than the number of plots --> we take the first one
1134	# -- if as many as number of plots --> OK, each plot has its own setting
1135	# (except a few cases such as trans)
1136	for iii in range(self.howmanyplots):
1137	## solve the bug about reversed labels with swaplab
1138	if opt.xlabel is None and opt.ylabel is None:
1139	self.p[iii].swaplab = True
1140	else:
1141	self.p[iii].swaplab = False
1142	##
1143	if opt.void:
1144	self.p[iii].showcb = False
1145	else:
1146	self.p[iii].showcb = True
1147	###
1148	try: self.p[iii].trans = opt.trans
1149	except: pass
1150	###
1151	try: self.p[iii].div = opt.div
1152	except: pass
1153	###
1154	try: self.p[iii].logy = opt.logy
1155	except: pass
1156	###
1157	try: self.p[iii].colorbar = opt.colorbar[iii]
1158	except:
1159	try: self.p[iii].colorbar = opt.colorbar[0] ; self.colorbar = opt.colorbar[0]
1160	except: pass
1161	###
1162	if opt.void:
1163	self.p[iii].title = ""
1164	else:
1165	try: self.p[iii].title = opt.title[iii]
1166	except:
1167	try: self.p[iii].title = opt.title[0]
1168	except: pass
1169	###
1170	if opt.void:
1171	self.p[iii].xlabel = ""
1172	else:
1173	try: self.p[iii].xlabel = opt.xlabel[iii]
1174	except:
1175	try: self.p[iii].xlabel = opt.xlabel[0]
1176	except: pass
1177	###
1178	if opt.void:
1179	self.p[iii].ylabel = ""
1180	else:
1181	try: self.p[iii].ylabel = opt.ylabel[iii]
1182	except:
1183	try: self.p[iii].ylabel = opt.ylabel[0]
1184	except: pass
1185	###
1186	try: self.p[iii].linestyle = opt.linestyle[iii]
1187	except:
1188	try: self.p[iii].linestyle = opt.linestyle[0]
1189	except: pass
1190	###
1191	try: self.p[iii].color = opt.color[iii]
1192	except:
1193	try: self.p[iii].color = opt.color[0]
1194	except: pass
1195	###
1196	try: self.p[iii].marker = opt.marker[iii]
1197	except:
1198	try: self.p[iii].marker = opt.marker[0]
1199	except: pass
1200	###
1201	try: self.p[iii].legend = opt.legend[iii]
1202	except:
1203	try: self.p[iii].legend = opt.legend[0]
1204	except: pass
1205	###
1206	try: self.p[iii].proj = opt.proj[iii]
1207	except:
1208	try: self.p[iii].proj = opt.proj[0]
1209	except: pass
1210	###
1211	try: self.p[iii].back = opt.back[iii]
1212	except:
1213	try: self.p[iii].back = opt.back[0]
1214	except: pass
1215	###
1216	try: self.p[iii].area = opt.area[iii]
1217	except:
1218	try: self.p[iii].area = opt.area[0]
1219	except: pass
1220	###
1221	try: self.p[iii].blon = opt.blon[iii]
1222	except:
1223	try: self.p[iii].blon = opt.blon[0]
1224	except: pass
1225	###
1226	try: self.p[iii].blat = opt.blat[iii]
1227	except:
1228	try: self.p[iii].blat = opt.blat[0]
1229	except: pass
1230	###
1231	try: self.p[iii].vmin = opt.vmin[iii]
1232	except:
1233	try: self.p[iii].vmin = opt.vmin[0]
1234	except: pass
1235	###
1236	try: self.p[iii].vmax = opt.vmax[iii]
1237	except:
1238	try: self.p[iii].vmax = opt.vmax[0]
1239	except: pass
1240	###
1241	try: self.p[iii].xcoeff = opt.xcoeff[iii]
1242	except:
1243	try: self.p[iii].xcoeff = opt.xcoeff[0]
1244	except: pass
1245	###
1246	try: self.p[iii].ycoeff = opt.ycoeff[iii]
1247	except:
1248	try: self.p[iii].ycoeff = opt.ycoeff[0]
1249	except: pass
1250	###
1251	try: self.p[iii].units = opt.units[iii]
1252	except:
1253	try: self.p[iii].units = opt.units[0]
1254	except: pass
1255	###
1256	try: self.p[iii].wscale = opt.wscale[iii]
1257	except:
1258	try: self.p[iii].wscale = opt.wscale[0]
1259	except: pass
1260	###
1261	try: self.p[iii].xmin = opt.xmin[iii]
1262	except:
1263	try: self.p[iii].xmin = opt.xmin[0]
1264	except: pass
1265	###
1266	try: self.p[iii].ymin = opt.ymin[iii]
1267	except:
1268	try: self.p[iii].ymin = opt.ymin[0]
1269	except: pass
1270	###
1271	try: self.p[iii].xmax = opt.xmax[iii]
1272	except:
1273	try: self.p[iii].xmax = opt.xmax[0]
1274	except: pass
1275	###
1276	try: self.p[iii].ymax = opt.ymax[iii]
1277	except:
1278	try: self.p[iii].ymax = opt.ymax[0]
1279	except: pass
1280	###
1281	try: self.p[iii].nxticks = opt.nxticks[iii]
1282	except:
1283	try: self.p[iii].nxticks = opt.nxticks[0]
1284	except: pass
1285	###
1286	try: self.p[iii].nyticks = opt.nyticks[iii]
1287	except:
1288	try: self.p[iii].nyticks = opt.nyticks[0]
1289	except: pass
1290	###
1291	try: self.p[iii].cbticks = opt.cbticks[iii]
1292	except:
1293	try: self.p[iii].cbticks = opt.cbticks[0]
1294	except: pass
1295	###
1296	try: self.p[iii].modx = opt.modx[iii]
1297	except:
1298	try: self.p[iii].modx = opt.modx[0]
1299	except: pass
1300	###
1301	try: self.p[iii].fmt = opt.fmt[iii]
1302	except:
1303	try: self.p[iii].fmt = opt.fmt[0]
1304	except: pass
1305
1306
1307	##########################################################
1308	### THE ONEREQUEST SUBOBJECT TO PP (ON WHICH IT LOOPS) ###
1309	##########################################################
1310	class onerequest():
1311
1312	# default settings. mostly initialized to diagnose problem, except dimplot, nplot, verbose, swap_axes, invert_axes
1313	# -------------------------------
1314	def __init__(self):
1315	self.file = '!! file: I am not set, damned !!'
1316	self.f = None
1317	self.dim = None
1318	self.var = '!! var: I am not set, damned !!'
1319	self.index_x = [] ; self.index_y = [] ; self.index_z = [] ; self.index_t = []
1320	self.index_x2d = [] ; self.index_y2d = []
1321	self.method_x = '!! method_x: I am not set, damned !!'
1322	self.method_y = '!! method_y: I am not set, damned !!'
1323	self.method_z = '!! method_z: I am not set, damned !!'
1324	self.method_t = '!! method_t: I am not set, damned !!'
1325	self.field = None
1326	self.name_x = None ; self.name_y = None ; self.name_z = None ; self.name_t = None
1327	self.dim_x = None ; self.dim_y = None ; self.dim_z = None ; self.dim_t = None
1328	self.field_x = None ; self.field_y = None ; self.field_z = None ; self.field_t = None
1329	self.tabtime = None
1330	self.dimplot = 0
1331	self.nplot = 1
1332	self.absc = None ; self.ordi = None ; self.absclab = None ; self.ordilab = None
1333	self.verbose = True
1334	self.swap_axes = False ; self.invert_axes = False
1335	self.compute = None
1336	self.changetime = None
1337	self.sx = 1 ; self.sy = 1 ; self.sz = 1 ; self.st = 1
1338	self.missing = '!! missing value: I am not set, damned !!'
1339	self.kind3d = '!! kind3d: I am not set, damned !!'
1340
1341	# open a file. for now it is netcdf. TBD for other formats.
1342	# check that self.var is inside.
1343	# -------------------------------
1344	def openfile(self):
1345	if not os.path.exists(self.file): print '!! ERROR !! I could not find the following file: '+self.file ; exit()
1346	if not os.path.isfile(self.file): print '!! ERROR !! This does not appear to be a file: '+self.file ; exit()
1347	self.f = netCDF4.Dataset(self.file)
1348	if self.verbose: print "**** OK. Opened file "+self.file
1349	if self.var not in self.f.variables.keys():
1350	print '!! ERROR !! File '+self.file+' does not contain variable: '+self.var
1351	print '..... try instead with ',self.f.variables.keys() ; exit()
1352
1353	# close a file
1354	# ------------
1355	def closefile(self):
1356	self.f.close()
1357
1358	# copy attributes from another existing object
1359	# --------------------------------------------
1360	def copy(self,source):
1361	for k, v in vars(source).items():
1362	setattr(self,k,v)
1363
1364	# get x,y,z,t dimensions from NETCDF file
1365	# TBD: user could request for a specific altitude dimension
1366	# TBD: staggered variables could request specific dimensions
1367	# -------------------------------
1368	def getdim(self):
1369	# GET SIZES OF EACH DIMENSION
1370	if self.verbose: print "**** OK. Found variable "+self.var
1371	shape = self.f.variables[self.var].shape
1372	self.dim = len(shape)
1373	if self.dim == 1:
1374	if self.verbose: print "**** OK. 1D field. I assume this varies with time."
1375	self.dim_x = 1 ; self.dim_y = 1 ; self.dim_z = 1 ; self.dim_t = shape[0]
1376	elif self.dim == 2:
1377	if self.verbose: print "**** OK. 2D field. I assume this is not-time-varying lat-lon map."
1378	self.dim_x = shape[1] ; self.dim_y = shape[0] ; self.dim_z = 1 ; self.dim_t = 1
1379	elif self.dim == 3:
1380	if self.verbose: print "**** OK. 3D field. I assume this is time-varying lat-lon map."
1381	## see below for comment
1382	if self.kind3d == "tyx":
1383	self.dim_x = shape[2] ; self.dim_y = shape[1] ; self.dim_z = 1 ; self.dim_t = shape[0]
1384	elif self.kind3d == "tzy":
1385	self.dim_x = 1 ; self.dim_y = shape[2] ; self.dim_z = shape[1] ; self.dim_t = shape[0]
1386	else:
1387	print "!! ERROR !! This kind of 3D field is not supported. Please send feedback."
1388	print self.kind3d
1389	exit()
1390	elif self.dim == 4:
1391	if self.verbose: print "**** OK. 4D field."
1392	self.dim_x = shape[3] ; self.dim_y = shape[2] ; self.dim_z = shape[1] ; self.dim_t = shape[0]
1393	# LONGITUDE. Try preset fields. If not present set grid points axis.
1394	self.name_x = "nothing"
1395	for c in glob_listx:
1396	if c in self.f.variables.keys():
1397	self.name_x = c
1398	if self.name_x == "nothing":
1399	self.field_x = np.array(range(self.dim_x))
1400	self.name_x = "x grid points"
1401	else:
1402	self.field_x = self.f.variables[self.name_x]
1403	# LATITUDE. Try preset fields. If not present set grid points axis.
1404	self.name_y = "nothing"
1405	for c in glob_listy:
1406	if c in self.f.variables.keys():
1407	self.name_y = c
1408	if self.name_y == "nothing":
1409	self.field_y = np.array(range(self.dim_y))
1410	self.name_y = "y grid points"
1411	else:
1412	self.field_y = self.f.variables[self.name_y]
1413	# ensure that lon and lat are 2D fields
1414	# 1. simple 1D case (not time-varying)
1415	if len(self.field_x.shape)*len(self.field_y.shape) == 1:
1416	if self.verbose: print "**** OK. recasting lon and lat as 2D fields."
1417	[self.field_x,self.field_y] = np.meshgrid(self.field_x,self.field_y)
1418	# 2. complex 3D case (time-varying, actually just copied over time axis)
1419	elif len(self.field_x.shape)*len(self.field_y.shape) == 9:
1420	if self.verbose: print "**** OK. reducing lon and lat as 2D fields. get rid of time."
1421	self.field_x = self.field_x[0,:,:]
1422	self.field_y = self.field_y[0,:,:]
1423	# if xy axis are apparently undefined, set 2D grid points axis.
1424	if "grid points" not in self.name_x:
1425	if np.all(self.field_x == self.field_x[0,0]) \
1426	or self.field_x.min() == self.field_x.max() \
1427	or self.field_y.min() == self.field_y.max():
1428	if self.verbose: print "!! WARNING !! xy axis look undefined. creating non-dummy ones."
1429	self.field_x = np.array(range(self.dim_x)) ; self.name_x = "x grid points"
1430	self.field_y = np.array(range(self.dim_y)) ; self.name_y = "y grid points"
1431	[self.field_x,self.field_y] = np.meshgrid(self.field_x,self.field_y)
1432	if self.dim_x > 1:
1433	if self.verbose: print "**** OK. x axis %4.0f values [%5.1f,%5.1f]" % (self.dim_x,self.field_x.min(),self.field_x.max())
1434	if self.dim_y > 1:
1435	if self.verbose: print "**** OK. y axis %4.0f values [%5.1f,%5.1f]" % (self.dim_y,self.field_y.min(),self.field_y.max())
1436	# ALTITUDE. Try preset fields. If not present set grid points axis.
1437	# WARNING: how do we do if several are available? the last one is chosen.
1438	self.name_z = "nothing"
1439	for c in glob_listz:
1440	if c in self.f.variables.keys():
1441	self.name_z = c
1442	if self.name_z == "nothing":
1443	self.field_z = np.array(range(self.dim_z))
1444	self.name_z = "z grid points"
1445	else:
1446	tabalt = self.f.variables[self.name_z]
1447	# (consider the case where tabtime is not dim 1) TBD: 2D and 3D cases
1448	if tabalt.ndim == 4:
1449	try:
1450	self.field_z = tabalt[1,:,0,0] # 4D case. alt is usually third dimension.
1451	# 1 for time to avoid initial 0s
1452	except:
1453	self.field_z = tabalt[0,:,0,0]
1454	if self.verbose: print "!! WARNING !! "+self.name_z+" is 4D var. We made it 1D."
1455	else:
1456	self.field_z = self.f.variables[self.name_z][:] # specify dimension
1457	# TBD: problems when self.dim_z != self.field_z.size
1458	if self.field_z.size != self.dim_z:
1459	if self.verbose: print "!! WARNING !! Cannot use this z coordinate. Not enough points. Use simple z axis."
1460	self.field_z = np.array(range(self.dim_z))
1461	self.name_z = "z grid points"
1462	if self.dim_z > 1:
1463	if self.verbose: print "**** OK. z axis %4.0f values [%5.1f,%5.1f]" % (self.dim_z,self.field_z.min(),self.field_z.max())
1464
1465	# TIME. Try preset fields.
1466	self.name_t = "nothing"
1467	for c in glob_listt:
1468	if c in self.f.variables.keys():
1469	self.name_t = c
1470	if self.verbose: print "**** OK. Found time variable: ",c
1471	try:
1472	# speed up: only get first value, last one.
1473	self.tabtime = self.f.variables[self.name_t]
1474	# (consider the case where tabtime is not dim 1)
1475	# (time is most often the first dimension)
1476	if self.tabtime.ndim == 2: self.tabtime = self.tabtime[:,0]
1477	elif self.tabtime.ndim == 3: self.tabtime = self.tabtime[:,0,0]
1478	elif self.tabtime.ndim == 4: self.tabtime = self.tabtime[:,0,0,0]
1479	# (now proceed) (the +0. just ensures this is a number)
1480	dafirst = self.tabtime[0] + 0.
1481	if self.dim_t == 1:
1482	self.field_t = np.array([dafirst])
1483	else:
1484	daint = self.tabtime[1] - dafirst
1485	dalast = dafirst + (self.dim_t-1)*daint
1486	self.field_t = np.linspace(dafirst,dalast,num=self.dim_t)
1487	if self.verbose:
1488	print "!! WARNING !! WARNING !! Time axis is supposed to be equally spaced !!"
1489	if dalast != self.tabtime[self.dim_t-1]:
1490	print "!! WARNING !! Time axis has been recast to be monotonic",dalast,self.tabtime[self.dim_t-1]
1491	except:
1492	# ... or if a problem encountered, define a simple time axis
1493	if self.verbose: print "**** OK. There is something weird. Let us go for a simple time axis."
1494	self.field_t = np.array(range(self.dim_t))
1495	self.name_t = "t grid points"
1496	if self.dim_t > 1:
1497	if self.verbose: print "**** OK. t axis %4.0f values [%5.1f,%5.1f]" % (self.dim_t,self.field_t.min(),self.field_t.max())
1498
1499	# change time axis
1500	# ... add your options here!
1501	# --------------------------
1502	def performtimechange(self):
1503	if self.changetime is not None:
1504	if self.verbose: print "**** OK. Converting time axis:",self.changetime
1505	### options added by T. Navarro
1506	if self.changetime == "mars_sol2ls":
1507	if "controle" in self.f.variables:
1508	self.field_t = self.field_t \
1509	+ self.f.variables['controle'][3]%669 \
1510	+ self.f.variables['controle'][26]
1511	self.field_t = ppcompute.mars_sol2ls(self.field_t)
1512	elif self.changetime == "mars_dayini" and "controle" in self.f.variables:
1513	self.field_t = self.field_t \
1514	+ self.f.variables['controle'][3]%669 \
1515	+ self.f.variables['controle'][26]
1516	### options added by A. Spiga
1517	elif self.changetime == "correctls":
1518	dafirst = self.tabtime[0] + 0.
1519	if self.dim_t == 1:
1520	self.field_t = np.array([dafirst])
1521	else:
1522	daint = self.tabtime[1] - dafirst
1523	dalast = dafirst + (self.dim_t-1)*daint
1524	year = 0.
1525	add = np.linspace(dafirst,dalast,num=self.dim_t) ; add[0] = 0.
1526	for iii in range(1,self.dim_t):
1527	if self.tabtime[iii] - self.tabtime[iii-1] < 0: year = year+1.
1528	add[iii] = year*360.
1529	self.field_t = add + self.tabtime
1530	elif "mars_meso" in self.changetime:
1531	if 'Times' not in self.f.variables.keys():
1532	if self.verbose: print "!! WARNING !! Variable Times not in file. Cannot proceed to change of time axis."
1533	else:
1534	# get the array of strings describing dates
1535	dates = self.f.variables['Times']
1536	dates.set_auto_maskandscale(False) # necessary to solve the api Times bug!
1537	# get ls sol utc from those strings
1538	ls, sol, utc = ppcompute.mars_date(dates[:])
1539	# populate self.field_t with the right output from mars_date
1540	if self.changetime == "mars_meso_ls":
1541	self.field_t = ls
1542	self.name_t = "Ls"
1543	elif self.changetime == "mars_meso_sol":
1544	self.field_t = sol
1545	self.name_t = "sol"
1546	elif self.changetime == "mars_meso_utc" \
1547	and ( self.changetime == "mars_meso_lt" \
1548	and not hasattr(self.f,'CEN_LON') ):
1549	self.field_t = ppcompute.timecorrect(utc)
1550	self.name_t = "utc"
1551	if self.method_t == "fixed":
1552	self.field_t = self.field_t % 24 # so that the user is not mistaken!
1553	elif self.changetime == "mars_meso_lt":
1554	self.field_t = ppcompute.timecorrect(utc) + getattr(self.f,'CEN_LON') / 15.
1555	self.field_t = ppcompute.timecorrect(self.field_t)
1556	self.name_t = "local time (center of domain)"
1557	if self.method_t == "fixed":
1558	self.field_t = self.field_t % 24 # so that the user is not mistaken!
1559	else:
1560	if self.verbose: print "!! WARNING !! This time change is not implemented. Nothing is done."
1561	if self.verbose: print "**** OK. new t axis values [%5.1f,%5.1f]" % (self.field_t.min(),self.field_t.max())
1562
1563	# get list of index to be retrieved for time axis
1564	### TBD: il faudrait ne prendre que les indices qui correspondent a l interieur d un plot (dans all)
1565	# -------------------------------
1566	def getindextime(self,dalist=None,ind=None):
1567	if self.method_t == "free":
1568	self.index_t = np.arange(0,self.dim_t,self.st)
1569	if self.dim_t > 1:
1570	self.dimplot = self.dimplot + 1
1571	if self.verbose: print "**** OK. t values. all."
1572	else:
1573	self.method_t = "fixed"
1574	if self.verbose: print "**** OK. no t dimension."
1575	elif self.method_t == "comp":
1576	start = np.argmin( np.abs( self.field_t - dalist[ind][0] ) )
1577	stop = np.argmin( np.abs( self.field_t - dalist[ind][1] ) )
1578	self.index_t = np.arange(start,stop,self.st)
1579	if self.verbose: print "**** OK. t values. comp over interval ",self.field_t[start],self.field_t[stop]," nvalues=",self.index_t.size
1580	elif self.method_t == "fixed":
1581	self.index_t.append( np.argmin( np.abs( self.field_t - dalist[ind][0] ) ))
1582	if self.verbose: print "**** OK. t values",self.field_t[self.index_t]
1583	else:
1584	print "!! ERROR !! method "+self.method_t+" not supported"
1585	self.index_t = np.array(self.index_t)
1586
1587	# get list of index to be retrieved for vertical axis
1588	### TBD: il faudrait ne prendre que les indices qui correspondent a l interieur d un plot (dans all)
1589	# -------------------------------
1590	def getindexvert(self,dalist=None,ind=None):
1591	if self.method_z == "free":
1592	self.index_z = np.arange(0,self.dim_z,self.sz)
1593	if self.dim_z > 1:
1594	self.dimplot = self.dimplot + 1
1595	if self.verbose: print "**** OK. z values. all."
1596	else:
1597	self.method_z = "fixed"
1598	if self.verbose: print "**** OK. no z dimension."
1599	elif self.method_z == "comp":
1600	start = np.argmin( np.abs( self.field_z - dalist[ind][0] ) )
1601	stop = np.argmin( np.abs( self.field_z - dalist[ind][1] ) )
1602	self.index_z = np.arange(start,stop,self.sz)
1603	if self.verbose: print "**** OK. z values. comp over interval",self.field_z[start],self.field_z[stop]," nvalues=",self.index_z.size
1604	elif self.method_z == "fixed":
1605	self.index_z.append( np.argmin( np.abs( self.field_z - dalist[ind][0] ) ))
1606	if self.verbose: print "**** OK. z values",self.field_z[self.index_z]
1607	else:
1608	if self.verbose: print "!! ERROR !! method "+self.method_z+" not supported"
1609	self.index_z = np.array(self.index_z)
1610
1611	# get list of index to be retrieved for horizontal grid
1612	# --> index_x and index_y are slices to be retrieved from NETCDF files
1613	# --> index_x2d and index_y2d are the actual (x,y) coordinates corresponding to each relevant point
1614	# [this is slightly more complicated because 2D arrays for lat-lon projection possibly irregular]
1615	# NB: to append index we use lists (the most convenient) then we convert into a numpy.array
1616	### TBD: il faudrait ne prendre que les indices qui correspondent a l interieur d un plot (dans all)
1617	# -------------------------------
1618	def getindexhori(self,dalistx=None,dalisty=None,indx=None,indy=None):
1619	## get what is the method over x and y axis
1620	test = self.method_x+self.method_y
1621	## CASE 0, EASY CASES:
1622	## - LAT IS FREE (we do here what must be done whatever LON case is)
1623	## - LON IS FREE (we do here what must be done whatever LAT case is)
1624	## - LAT IS COMP AND LON IS FREE
1625	## - LON IS COMP AND LAT IS FREE
1626	if self.method_x == "free" or test in ["compfree","compcomp"]:
1627	self.index_x = range(0,self.dim_x,self.sx)
1628	if self.dim_x > 1:
1629	if self.method_x == "free": self.dimplot = self.dimplot + 1
1630	if self.verbose: print "**** OK. x values. all."
1631	else:
1632	self.method_x = "fixed"
1633	if self.verbose: print "**** OK. no x dimension."
1634	if self.method_y == "free" or test in ["freecomp","compcomp"]:
1635	self.index_y = range(0,self.dim_y,self.sy)
1636	if self.dim_y > 1:
1637	if self.method_y == "free": self.dimplot = self.dimplot + 1
1638	if self.verbose: print "**** OK. y values. all."
1639	else:
1640	self.method_y = "fixed"
1641	if self.verbose: print "**** OK. no y dimension."
1642	## CASE 0 above, this is just for continuity for free.
1643	## ... for comp we have to select bounds.
1644	## ... TBD: take the bool array strategy for what follows!
1645	if self.method_x in ["free","comp"] and self.method_y in ["free","comp"]:
1646	### ref1_dirty_hack
1647	### ... for the moment this is a hack. but actually this is more powerful.
1648	if self.method_x == "comp":
1649	yeah = (self.field_x >= dalistx[indx][0])*(self.field_x <= dalistx[indx][1])
1650	self.index_x = yeah[0,:]
1651	if self.method_y == "comp":
1652	yeah = (self.field_y >= dalisty[indy][0]) * (self.field_y <= dalisty[indy][1])
1653	self.index_y = yeah[:,0]
1654	self.index_x2d = self.index_x
1655	self.index_y2d = self.index_y
1656	## AND NOW THE LITTLE BIT MORE COMPLICATED CASES
1657	## CASE 1 LAT AND LON ARE FIXED
1658	elif test == "fixedfixed":
1659	idy,idx = np.unravel_index( np.argmin( ( self.field_x - dalistx[indx][0])2 + (self.field_y - dalisty[indy][0])2 ), self.field_x.shape )
1660	#TBD: pb with staggered coord
1661	if idx not in self.index_x: self.index_x.append(idx)
1662	if idy not in self.index_y: self.index_y.append(idy)
1663	self.index_x2d.append(idx)
1664	self.index_y2d.append(idy)
1665	## CASE 2 LON IS FIXED BUT NOT LAT
1666	elif test in ["fixedfree","fixedcomp"]:
1667	# find where are requested x values for each y on the free dimension
1668	# NB: this does not work for non-bijective cases e.g. polar stereographic
1669	for iy in range(self.dim_y):
1670	idx = np.argmin( np.abs( self.field_x[iy,:] - dalistx[indx][0] ) )
1671	# if comp is requested we select only indexes which yield values between requested min and max
1672	storeval = (self.method_y == "comp") and (self.field_y[iy,idx] > dalisty[indy][0]) and (self.field_y[iy,idx] < dalisty[indy][1])
1673	storeval = storeval or (self.method_y == "free")
1674	if storeval:
1675	if idx not in self.index_x: self.index_x.append(idx)
1676	if iy not in self.index_y and self.method_y == "comp": self.index_y.append(iy)
1677	if idx not in self.index_x2d or iy not in self.index_y2d:
1678	self.index_x2d.append(idx)
1679	self.index_y2d.append(iy)
1680	## CASE 3 LAT IS FIXED BUT NOT LON
1681	elif test in ["freefixed","compfixed"]:
1682	# find where are requested y values for each x on the free dimension
1683	# NB: this does not work for non-bijective cases e.g. polar stereographic
1684	for ix in range(self.dim_x):
1685	idy = np.argmin( np.abs( self.field_y[:,ix] - dalisty[indy][0] ) )
1686	# if comp is requested we select only indexes which yield values between requested min and max
1687	storeval = (self.method_x == "comp") and (self.field_x[idy,ix] > dalistx[indx][0]) and (self.field_x[idy,ix] < dalistx[indx][1])
1688	storeval = storeval or (self.method_x == "free")
1689	if storeval:
1690	if idy not in self.index_y: self.index_y.append(idy)
1691	if ix not in self.index_x and self.method_x == "comp": self.index_x.append(ix)
1692	if ix not in self.index_x2d or idy not in self.index_y2d:
1693	self.index_x2d.append(ix)
1694	self.index_y2d.append(idy)
1695	## check index tab
1696	if len(self.index_x) == 0 or len(self.index_y) == 0:
1697	print "!! ERROR !! no indices found. check prescribed latitudes or longitudes" ; exit()
1698	## ensure the array is a numpy array for getfield to work
1699	self.index_x = np.array(self.index_x)
1700	self.index_y = np.array(self.index_y)
1701	self.index_x2d = np.array(self.index_x2d)
1702	self.index_y2d = np.array(self.index_y2d)
1703	### print extrema
1704	printx = self.field_x[np.ix_(self.index_y2d, self.index_x2d)]
1705	printy = self.field_y[np.ix_(self.index_y2d, self.index_x2d)]
1706	if self.verbose:
1707	print "**** OK. x values (min,max).", printx.min(),printx.max()
1708	print "**** OK. y values (min,max).", printy.min(),printy.max()
1709
1710	# get the field from the NETCDF file and perform averages
1711	# -------------------------------
1712	def getfield(self):
1713	## first tell what is to be done
1714	if self.verbose:
1715	if self.dimplot > 2: print "**** !! WARNING !! "+str(self.dimplot)+"D plots will not be supported!"
1716	elif self.dimplot == 0 and self.verbose: print "**** OK. 0D value requested."
1717	elif self.dimplot == 1 and self.verbose: print "**** OK. 1D plot requested."
1718	elif self.verbose: print "**** OK. 2D section requested."
1719	# well, now get field from netcdf file
1720	# part below is necessary otherwise there is an index error below
1721	if self.index_x.size == 1: self.index_x = self.index_x[0]
1722	if self.index_y.size == 1: self.index_y = self.index_y[0]
1723	if self.index_z.size == 1: self.index_z = self.index_z[0]
1724	if self.index_t.size == 1: self.index_t = self.index_t[0]
1725	# then retrieve what is requested by user
1726	# each self.dim case corresponds to tests in the beginning of getdim.
1727	time0 = timelib.time()
1728	if self.verbose: print "**** OK. I am getting values from files. Please wait."
1729	if self.dim == 1:
1730	nt = self.index_t.size ; nz = 1 ; ny = 1 ; nx = 1
1731	self.field = self.f.variables[self.var][self.index_t]
1732	elif self.dim == 2:
1733	nt = 1 ; nz = 1 ; ny = self.index_y.size ; nx = self.index_x.size
1734	self.field = self.f.variables[self.var][self.index_y,self.index_x]
1735	elif self.dim == 3:
1736	## DEFAULT tyx (time-varying 2D field)
1737	if self.kind3d == "tyx":
1738	nt = self.index_t.size ; nz = 1 ; ny = self.index_y.size ; nx = self.index_x.size
1739	self.field = self.f.variables[self.var][self.index_t,self.index_y,self.index_x]
1740	## CASE tzy (e.g. time-varying zonal mean y-z field)
1741	elif self.kind3d == "tzy":
1742	nt = self.index_t.size ; nz = self.index_z.size ; ny = self.index_y.size ; nx = 1
1743	self.field = self.f.variables[self.var][self.index_t,self.index_z,self.index_y]
1744	else:
1745	print "!! ERROR !! This kind of 3D field is not supported. Please send feedback." ; exit()
1746	# this is far faster than retrieving each term with a loop
1747	elif self.dim == 4:
1748	nt = self.index_t.size ; nz = self.index_z.size ; ny = self.index_y.size ; nx = self.index_x.size
1749	self.field = self.f.variables[self.var][self.index_t,self.index_z,self.index_y,self.index_x]
1750	else:
1751	print "!! ERROR !! field would have more than four dimensions ?" ; exit()
1752	# dirty hack (AS) ref1_dirty_hack
1753	# waiting for more fundamental modifications. case when self.index_y is a bool array.
1754	# ... be careful if no point...
1755	try:
1756	if type(self.index_x[0]) == np.bool_: nx = np.sum(self.index_x) ## gives the size of the True part!
1757	if type(self.index_y[0]) == np.bool_: ny = np.sum(self.index_y) ## gives the size of the True part!
1758	except:
1759	pass
1760	# NB: ... always 4D array but possibly with "size 1" dimensions
1761	# ... if one dimension is missing because 1D 2D or 3D requests, make it appear again
1762	self.field = np.reshape(self.field,(nt,nz,ny,nx))
1763	if self.verbose: print "**** OK. I got %7.1e values. This took me %6.4f seconds" % (nxnynz*nt,timelib.time() - time0)
1764	if self.verbose: print "**** OK. I got var "+self.var+" with shape",self.field.shape
1765	# reduce coordinates to useful points
1766	# ... TBD: this should be ordered in the case of non-regular projections
1767	if self.method_x in ["free","comp"] and self.method_y in ["free","comp"]:
1768	# we need 2D coordinates (free) or we get broadcast problem (comp) so we use np.ix
1769	self.field_x = self.field_x[np.ix_(self.index_y2d, self.index_x2d)]
1770	self.field_y = self.field_y[np.ix_(self.index_y2d, self.index_x2d)]
1771	else:
1772	# we are OK with 1D coordinates
1773	self.field_x = self.field_x[self.index_y2d, self.index_x2d]
1774	self.field_y = self.field_y[self.index_y2d, self.index_x2d]
1775	# ... there are special cases with strides
1776	# ... some other fixes will be needed probably TBD
1777	if self.method_x == "free" and self.sx != 1:
1778	self.field_x = self.field_x[self.index_x]
1779	if self.method_y == "free" and self.sy != 1:
1780	self.field_y = self.field_y[self.index_y]
1781	self.field_z = self.field_z[self.index_z]
1782	self.field_t = self.field_t[self.index_t]
1783	# extract relevant horizontal points
1784	# TBD: is compfree OK with computing on irregular grid?
1785	test = self.method_x + self.method_y
1786	if test in ["fixedfixed","freefree"]:
1787	pass
1788	elif test in ["fixedfree","fixedcomp"] or test in ["freefixed","compfixed"]:
1789	if self.sx == 1 and self.sy == 1:
1790	time0 = timelib.time()
1791	# now have to obtain the new indexes which correspond to the extracted self.field
1792	# for it to work with unique index, ensure that any index_* is a numpy array
1793	if not isinstance(self.index_x, np.ndarray): self.index_x = np.array([self.index_x])
1794	if not isinstance(self.index_y, np.ndarray): self.index_y = np.array([self.index_y])
1795	if not isinstance(self.index_z, np.ndarray): self.index_z = np.array([self.index_z])
1796	if not isinstance(self.index_t, np.ndarray): self.index_t = np.array([self.index_t])
1797	for val in self.index_x: self.index_x2d[np.where(self.index_x2d == val)] = np.where(self.index_x == val)[0]
1798	for val in self.index_y: self.index_y2d[np.where(self.index_y2d == val)] = np.where(self.index_y == val)[0]
1799	##### VERY EXPENSIVE
1800	## recast self.field with 2D horizontal arrays because we might have extracted
1801	## more than what is to be actually plot or computed, in particular for comps on 2D lat,lon coordinates
1802	#self.field = self.field[np.ix_(self.index_t,self.index_z,self.index_y2d,self.index_x2d)]
1803	#(nt,nz,ny,nx) = self.field.shape
1804	# prepare the loop on all relevant horizontal points
1805	if self.method_x in ["comp","free"]:
1806	nnn = self.index_x2d.shape[0] ; what_I_am_supposed_to_do = "keepx"
1807	elif self.method_y in ["comp","free"]:
1808	nnn = self.index_y2d.shape[0] ; what_I_am_supposed_to_do = "keepy"
1809	# LOOP to extract only useful values over horizontal dimensions
1810	# only take diagonal terms, do not loop on all self.index_x2d*self.index_y2d
1811	# ... this method is fast enough, perhaps there is a faster way though
1812	# ... (for sure the method with np.diag is much slower)
1813	for iii in range(nnn):
1814	ix = self.index_x2d[iii] ; iy = self.index_y2d[iii]
1815	for iz in range(self.index_z.size):
1816	for it in range(self.index_t.size):
1817	if what_I_am_supposed_to_do == "keepx": self.field[it,iz,0,ix] = self.field[it,iz,iy,ix]
1818	elif what_I_am_supposed_to_do == "keepy": self.field[it,iz,iy,0] = self.field[it,iz,iy,ix]
1819	if self.verbose: print "**** OK. I got to pick the right values for your request. This took me %6.4f seconds" % (timelib.time() - time0)
1820	# we only keep the one value that was modified on the dimension which is not free
1821	if what_I_am_supposed_to_do == "keepx": self.field = self.field[:,:,0,:] ; ny = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1822	elif what_I_am_supposed_to_do == "keepy": self.field = self.field[:,:,:,0] ; nx = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1823	else:
1824	# there is a problem above if stride != 1. a fix must be found. rewrite might be necessary. TBD
1825	pass
1826	# check if 'not finite' values are present
1827	# (happens with some netCDF files where -- appears in arrays)
1828	# (but isn't it that netcdf4 returns masked arrays?)
1829	# -- we do not perform this correction for computations for which -- are handled correctly
1830	if "comp" not in self.method_t+self.method_z+self.method_y+self.method_x:
1831	w = np.where(np.isfinite(self.field) != True)
1832	self.field[w] = np.NaN
1833	## catch netCDF missing values (TBD: add a test try)
1834	#miss = self.f.variables[self.var].missing_value
1835	#if miss is not None: self.missing = miss
1836	# make a mask in case there are non-NaN missing values.
1837	# ... this is important for computations below (see ppcompute)
1838	masked = np.ma.masked_where(np.abs(self.field) >= self.missing,self.field)
1839	if masked.mask.any() == True:
1840	if self.verbose: print "!! WARNING !! Values over %5.3e are considered missing values." % self.missing
1841	self.field = masked
1842	self.field.set_fill_value([np.NaN])
1843
1844	# perform computations
1845	# -------------------------------
1846	# available: mean, max, min, meanarea
1847	# TB: integrals? for derivatives, define a function self.dx()
1848	def computations(self):
1849	nt,nz,ny,nx = self.field.shape
1850	# treat the case of mean on fields normalized with grid mesh area
1851	# ... this is done in the .area() method.
1852	# after that self.field contains field*area/totarea
1853	if "area" in self.compute:
1854	if "comp" in self.method_x+self.method_y:
1855	self.area()
1856	else:
1857	if self.verbose: print "!! WARNING !! No area accounted for (computing on t and/or z axis)."
1858	# prepare quadratic mean
1859	if "qmean" in self.compute: self.field = self.field*self.field
1860	# now ready to compute [TBD: we would like to have e.g. mean over x,y and min over t ??]
1861	if self.method_t == "comp":
1862	if self.verbose: print "**** OK. Computing over t axis."
1863	if "mean" in self.compute: self.field = ppcompute.mean(self.field,axis=0)
1864	elif self.compute == "min": self.field = ppcompute.min(self.field,axis=0)
1865	elif self.compute == "max": self.field = ppcompute.max(self.field,axis=0)
1866	else: print "!! ERROR !! operation not supported." ; exit()
1867	nt = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1868	if self.method_z == "comp":
1869	if self.verbose: print "**** OK. Computing over z axis."
1870	if "mean" in self.compute: self.field = ppcompute.mean(self.field,axis=1)
1871	elif self.compute == "min": self.field = ppcompute.min(self.field,axis=1)
1872	elif self.compute == "max": self.field = ppcompute.max(self.field,axis=1)
1873	else: print "!! ERROR !! operation not supported." ; exit()
1874	nz = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1875	if self.method_y == "comp":
1876	if self.verbose: print "**** OK. Computing over y axis."
1877	if self.compute == "meanarea": self.field = ppcompute.sum(self.field,axis=2)
1878	elif "mean" in self.compute: self.field = ppcompute.mean(self.field,axis=2)
1879	elif self.compute == "min": self.field = ppcompute.min(self.field,axis=2)
1880	elif self.compute == "max": self.field = ppcompute.max(self.field,axis=2)
1881	else: print "!! ERROR !! operation not supported." ; exit()
1882	ny = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1883	if self.field_x.ndim == 2: self.field_x = self.field_x[0,:] # TBD: this is OK for regular grid but not for irregular
1884	if self.method_x == "comp":
1885	if self.verbose: print "**** OK. Computing over x axis."
1886	if self.compute == "meanarea": self.field = ppcompute.sum(self.field,axis=3)
1887	elif "mean" in self.compute: self.field = ppcompute.mean(self.field,axis=3)
1888	elif self.compute == "min": self.field = ppcompute.min(self.field,axis=3)
1889	elif self.compute == "max": self.field = ppcompute.max(self.field,axis=3)
1890	else: print "!! ERROR !! operation not supported." ; exit()
1891	nx = 1 ; self.field = np.reshape(self.field,(nt,nz,ny,nx))
1892	if self.field_y.ndim == 2: self.field_y = self.field_y[:,0] # TBD: this is OK for regular grid but not for irregular
1893	# remove all dimensions with size 1 to prepare plot (and check the resulting dimension with dimplot)
1894	self.field = np.squeeze(self.field)
1895	# take root mean square for quadratic mean
1896	if self.compute == "qmean": self.field = np.sqrt(self.field)
1897	# error handling and verbose
1898	if self.field.ndim != self.dimplot:
1899	print "!! ERROR !! Problem: self.field is different than plot dimensions", self.field.ndim, self.dimplot ; exit()
1900	if self.verbose:
1901	print "**** OK. Final shape for "+self.var+" after averaging and squeezing",self.field.shape
1902
1903	# get areas for computations and ponderate self.field by area/totarea
1904	# -------------------------------------------------------------------
1905	def area(self):
1906	if self.verbose: print "**** OK. Get area array for computations."
1907	# create a request object for area
1908	# ... and copy known attributes from self
1909	aire = onerequest()
1910	aire.copy(self)
1911	# get area field name
1912	aire.var = "nothing"
1913	for c in glob_listarea:
1914	if c in aire.f.variables.keys():
1915	aire.var = c
1916	# do not try to calculate areas automatically
1917	if aire.var == "nothing":
1918	print "!! ERROR !! area variable not found... needs to be added in set_ppclass.txt?"
1919	exit()
1920	# define area request dimensions
1921	aire.getdim()
1922	# ensure this is a 2D horizontal request and define indexes
1923	# ... areas are not supposed to vary with time and height
1924	aire.method_x = "free" ; aire.method_y = "free"
1925	aire.getindexhori() ; aire.dimplot = 2
1926	aire.method_z = "fixed" ; aire.field_z = np.array([0]) ; aire.index_z = np.array([0])
1927	aire.method_t = "fixed" ; aire.field_t = np.array([0]) ; aire.index_t = np.array([0])
1928	# read the 2D area array in netCDF file
1929	aire.getfield()
1930	aire.field = np.squeeze(aire.field)
1931	# reduce with self horizontal indexes
1932	if "fixed" in self.method_x+self.method_y:
1933	aire.field = aire.field[self.index_y,self.index_x]
1934	# calculate total area
1935	# ... 2D comp is easy. 1D comp is a bit less easy but simple array manipulation.
1936	if "free" in self.method_x+self.method_y:
1937	if self.method_x == "free":
1938	totarea = ppcompute.sum(aire.field,axis=0)
1939	totarea = np.reshape(totarea,(1,totarea.size))
1940	totarea = np.tile(totarea,(1,self.index_x))
1941	elif self.method_y == "free":
1942	totarea = ppcompute.sum(aire.field,axis=1)
1943	totarea = np.reshape(totarea,(totarea.size,1))
1944	totarea = np.tile(totarea,(1,self.index_x.size))
1945	elif self.method_x == "comp" and self.method_y == "comp":
1946	aire.field = aire.field[np.ix_(self.index_y, self.index_x)] # reduce to requested indexes only
1947	totarea = ppcompute.sum(ppcompute.sum(aire.field,axis=1),axis=0)
1948	else:
1949	if self.verbose: print "!! WARNING !! Not account for areas. Only averaging over z and/or t axis."
1950	# normalize by total area
1951	print "**** OK. I can now normalize field by areas."
1952	aire.field = aire.field / totarea
1953	# tile area array over self t and z axis so that area field could be multiplied with self.field
1954	aire.field = np.tile(aire.field,(self.index_t.size,self.index_z.size,1,1))
1955	if self.field.shape != aire.field.shape:
1956	print "!! ERROR !! Problem in area(). Check array shapes."
1957	print "Field vs. aire:",self.field.shape,aire.field.shape ; exit()
1958	else:
1959	self.field = self.field*aire.field
1960
1961	# define coordinates for plot
1962	# -------------------------------
1963	def definecoord(self):
1964	I_got_abs = False ; I_got_ord = False
1965	# here is the thing. time is usually taken as an abscissa so we start with time.
1966	if self.method_t == "free":
1967	self.absc = self.field_t ; self.absclab = self.name_t
1968	I_got_abs = True
1969	# then we usually have x as an abscissa.
1970	if self.method_x == "free":
1971	if I_got_abs:
1972	self.ordi = self.field_x ; self.ordilab = self.name_x
1973	I_got_ord = True
1974	else:
1975	self.absc = self.field_x ; self.absclab = self.name_x
1976	I_got_abs = True
1977	# ... or we have y
1978	if self.method_y == "free":
1979	if I_got_abs:
1980	self.ordi = self.field_y ; self.ordilab = self.name_y
1981	I_got_ord = True
1982	else:
1983	self.absc = self.field_y ; self.absclab = self.name_y
1984	I_got_abs = True
1985	# ... and we end with z because it is usually not an abscissa (profiles).
1986	if self.method_z == "free":
1987	if self.field_z[0] > self.field_z[1]:
1988	self.invert_axes = True # the axis will be turned upside-down
1989	if I_got_abs:
1990	self.ordi = self.field_z ; self.ordilab = self.name_z
1991	I_got_ord = True
1992	else:
1993	self.absc = self.field_z ; self.absclab = self.name_z
1994	I_got_abs = True
1995	self.swap_axes = True # says that altitude is not supposed to remain as an abscissa
1996	if I_got_abs and self.verbose: print "**** OK. abscissa:",self.absclab, self.absc.shape
1997	if I_got_ord and self.verbose: print "**** OK. ordinate:",self.ordilab, self.ordi.shape

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