pro out_diagfi,	$
		plot=plot_user, $		; 'map', 'profile' (default is 'map')
	;----------------
	; input fields
	;----------------
		field1=field_user, $		; field to contour: 'u', 'v', 'temp', ... etc ...
		field2=fieldc_user, $		; field to overplot (contour lines, optional)
	;------------------------------------------------------
	; 'map' options (no effect when plot is 'profile')
	;------------------------------------------------------
		topo=topo, $			; overplot topography contours (!! must load phisinit !! override field2)
		winds=winds, $			; option to overplot winds (e.g. =['U','V'])
		level=level, $			; vertical level subscript (starts at 1 ...)(if -1: all levels)
	;------------------------------------------------------
	; 'profile' options (no effect when plot is 'map')
	;------------------------------------------------------
		inprofile=inprofile, $		; a profile to compare with ... (override field2)
		incolumn=incolumn, $		; altitudes ... in case /= column
		;; NB: inprofile and incolumn may be used to output profiles
		;; ... reset with inprofile=0, incolumn=0
	;----------------
	; choose time
	;----------------
		when=when, $			; time subscript (starts at 1 ...)(if -1: first time step)
	;----------------
	; plot options
	;----------------
		range=range_user, $		; range=[min,max]
		colors=colors, $		; 16, 32, 64, ... etc
	;-------------------------
	; no useless data loading
	;-------------------------
		save_data=save_data		; to avoid loading data if already done once


;---------------------------------------------------------------------------
;
; A general routine to plot diagfi.nc GCM outputs
;
; USE: see out_wrf
;
;---------------------------------------------------------------------------
; A. Spiga, August 2007, adding plot keyword September 2007
;---------------------------------------------------------------------------



;-------------------------------------
; default settings and user settings
;-------------------------------------
charend=''
diff_scale=0  ;1
if (n_elements(plot_user) eq 0) then plot_user='map'
if (n_elements(field_user) eq 0) then field_user='all'
if (n_elements(level) eq 0) then level=-1
if (n_elements(when) eq 0) then when=-1
if (n_elements(colors) eq 0) then colors=32
if (n_elements(minfield_init)*n_elements(maxfield_init) eq 0) then begin
	minfield_init = 0.
	maxfield_init = 0.
endif

if (n_elements(range_user) eq 2) then begin
	minfield_init=float(range_user(0))
	maxfield_init=float(range_user(1))
	print, 'setting user limits !', minfield_init, maxfield_init 
	diff_scale=1
endif



;******************************************************************************
;
; BEGIN: different from out_wrf
;
;******************************************************************************

;TEMP TEMP
vert_coord='sigma'
;vert_coord='pressure'
;vert_coord='height'
;TEMP TEMP

;----------------------
; set parameters
;----------------------
file='input.diagfi'
if (n_elements(topo) ne 0) then fieldc_user='phisinit'	;case with topography



;----------------------------------------------------
; Open diagfi file GCM and get coordinates & field
;----------------------------------------------------
cdfid = ncdf_open(file)

print, 'read coord ...'
varid=ncdf_varid(cdfid,'latitude')
        ncdf_varget, cdfid, varid, lat_gcm
varid=ncdf_varid(cdfid,'longitude')
        ncdf_varget, cdfid, varid, lon_gcm
varid=ncdf_varid(cdfid,'Time')
        ncdf_varget, cdfid, varid, hour
lon=lon_gcm
west_east=n_elements(lon)
lat=lat_gcm
south_north=n_elements(lat)
print, 'done !'
;;print, 'time ...', hour*24 MOD 24, ' hours and day number ', ceil(hour)

; field
if (n_elements(save_data) eq 0) then begin
	print, 'read data ...'
	varid=ncdf_varid(cdfid,field_user)
		ncdf_varget, cdfid, varid, var
		bottom_top=n_elements(var(0,0,*,0))
		time=n_elements(var(0,0,0,*))
;save_array=fltarr(3,west_east,south_north,bottom_top,time)
;save_array(0,*,*,*,*)=var(*,*,*,*)
;;**NB: ralentit beaucoup
	print, 'done !'
endif else begin	
	var=reform(save_data(0,*,*,*,*))
		bottom_top=n_elements(var(0,0,*,0))
		time=n_elements(var(0,0,0,*))
endelse

print, 'vertical levels in file ... ', bottom_top
print, 'time steps in file ...', time



	;-----------------------------
	; min/max on the whole field
	;-----------------------------
	w=where(abs(var) lt 1e30)
	if (w(0) ne -1) then begin
		minfield=min(var[w])
		maxfield=max(var[w])
			;;; manage unvalid points
			;;;w=where(var eq 1e37)
			;;;if (w(0) ne -1) then var[w]=!Values.F_NAN
	endif else begin
		var=0
		print, 'no valid values in this field', charvar 
	endelse



;---------------------
; Get altitude
;---------------------
if (vert_coord ne 'pressure') then begin
	print, 'read altitude ...'
	varid=ncdf_varid(cdfid,'aps')
        	ncdf_varget, cdfid, varid, aps
	varid=ncdf_varid(cdfid,'bps')
        	ncdf_varget, cdfid, varid, bps
	varid=ncdf_varid(cdfid,'ps')
        	ncdf_varget, cdfid, varid, ps
	varid=ncdf_varid(cdfid,'altitude')
        	ncdf_varget, cdfid, varid, z
	print, 'done !'
endif else begin
	print, 'read altitude ...'
	varid=ncdf_varid(cdfid,'altitude')
        	ncdf_varget, cdfid, varid, z
	z=z/100.   ;mbar
	print, 'done !'
endelse


;-------------
; Get winds
;-------------
if (n_elements(winds) ne 0) then begin
if (n_elements(save_data) eq 0) then begin
	print, 'read winds ...'
	varid=ncdf_varid(cdfid,winds(0))
		ncdf_varget, cdfid, varid, u
	varid=ncdf_varid(cdfid,winds(1))
		ncdf_varget, cdfid, varid, v
	;save_array(1,*,*,*,*)=u(*,*,*,*)
	;save_array(2,*,*,*,*)=v(*,*,*,*)
	print, 'done !'
endif else begin	
	u=reform(save_data(1,*,*,*,*))
	v=reform(save_data(2,*,*,*,*))
endelse
endif

;-------------------------------
; Get another field to contour
;-------------------------------
if (n_elements(fieldc_user) ne 0) then begin
	print, 'get alternate field ...'
	varid=ncdf_varid(cdfid,fieldc_user)
		ncdf_varget, cdfid, varid, varcontour
	print, 'done !'
endif


;;-------------------------------
;; Save data for further use ...
;;-------------------------------
;if (n_elements(save_data) eq 0) then begin
;	save_data=save_array
;	save_array=0. ;free 'save_array' array
;endif


;---------------------------------
; Some stuff for continuity
;---------------------------------
;;if (vert_coord ne 'pressure') then surfpres=reform(ps(*,*,nt))
;;A CORRIGER - A METTRE DANS LA BOUCLE
if (vert_coord ne 'pressure') then surfpres=reform(ps(*,*,0))
if (vert_coord eq 'sigma') then begin
	z=aps/surfpres(0,0)+bps
	z=z*100.
	vert_coord='model_level'
endif
charend='_diagfi'

case field_user of 
'temp': charvar='tk'
'u': charvar='U'
'v': charvar='V'
'ps': charvar='PSFC'
else:
endcase

;;
;;


;******************************************************************************
;
; END: different from out_wrf
;
;******************************************************************************



;----------------------
; initialize graphics
;----------------------

!p.charthick = 2.0
!p.thick = 3.0
!x.thick = 2.0
!y.thick = 2.0

if (when ne -1) then charend=charend+string(when, '(I0)')

set_plot, 'ps'
device, filename=plot_user+'_'+vert_coord+'_'+charvar+charend+'.ps', /color

case charvar of
'tk': begin
	title='Temperature (K)'
	pal=3
end
'U': begin
	title='Zonal wind (!Nm!N.s!U-1!N)'
	pal=33
end
'V': begin
	title='Zonal wind (!Nm!N.s!U-1!N)'
	pal=33
end
'pressure': begin
	title='Pressure (hPa)'
	pal=16
end
'height': begin
	title='Height (km)'
	pal=16
end
'T': title='Potential temperature departure from t0 (K)'
'W': title='Vertical wind (!Ncm!N.s!U-1!N)'
else: title=''
endcase
title_save=title



;---------------------------------
; choose positioning ...
;---------------------------------

case plot_user of
'map': begin
;
; 1. map: looping on vertical levels
;
	if (level eq -1) then begin
		theloopmin=0
		theloopmax=bottom_top-1
	endif else begin
		theloopmin=level-1 ;!! IDL arrays starts at 0
		theloopmax=level-1
	endelse	
	if (when eq -1) then nt = 0 else nt=when-1
end
'profile': begin
;
; 2. profile: looping on time
;
	;;discrete=4
	title_axis=strarr(2)
	title_axis(0)=title_save
	if (when eq -1) then begin
		theloopmin=0
		theloopmax=time-1
	endif else begin
		theloopmin=when-1 ;!! IDL arrays starts at 0
		theloopmax=when-1
	endelse	

	column=z
	case vert_coord of
		'height': title_axis(1)='Altitude (km)'
		'pressure': begin
			H=10.
			p0=6.1
			column=H*alog(p0/z)
			title_axis(1)='Log-Pressure altitude (km)'
		end
		'model_level': title_axis(1)='Model level'
	endcase

;****TEMP
nx=round(west_east/2)
ny=round(south_north/2)
;****TEMP

	displaylat=float(round(lat(ny)*100))/100.
	displaylon=float(round(lon(nx)*100))/100.
	description='WRF Profile at latitude '+string(displaylat,format='(1F6.2)')+$
	'!Uo'+'!N and longitude '+string(displaylon,format='(1F7.2)')+'!Uo!N '
	title=description

end
else: stop
endcase


;-------------
; plot loop
;-------------	
for theloop=theloopmin,theloopmax do begin

case plot_user of
'map': begin
	;
	; case 1: map
	;	
	case vert_coord of
	'height': charlev=string(round(z(theloop)*1000.),'(I0)')+' m'
	'pressure': charlev=string(round(z(theloop)*100.),'(I0)')+' Pa'
	'model_level': charlev=string(round(z(theloop)),'(I0)')
	endcase
	title=title_save+' at level '+charlev
	print, title

	;-------------
	; draw map
	;-------------

	what_I_plot=var[*,*,theloop,nt]

	if (diff_scale eq 0) then begin
		minfield_init=minfield	;-same scale for all levels 
		maxfield_init=maxfield	;-same scale for all levels
	endif
	if (n_elements(fieldc_user) eq 0) then begin
		overcontour=0.
	endif else begin
		if (n_elements(topo) ne 0) then begin
			overcontour=varcontour[*,*,0,0] ; other levels than 0 are blank !
		endif else begin
			overcontour=varcontour[*,*,theloop,nt]
		endelse
	endelse
	if (n_elements(winds) eq 0) then begin
		overvector_x=0.
		overvector_y=0.
	endif else begin
		overvector_x=u[*,*,theloop,nt]
		overvector_y=v[*,*,theloop,nt]
	endelse


	map_latlon, $
		what_I_plot, $
		lon, $
		lat, $
		ct=pal, $
		minfield=minfield_init, $
		maxfield=maxfield_init, $
		overcontour=overcontour, $
		overvector_x=overvector_x, $
		overvector_y=overvector_y, $
		colors=colors, $
		title=title
end
'profile': begin
	;
	; case 2: profile
	;
	print, title

	what_I_plot=var[nx,ny,*,theloop]
	if (diff_scale eq 0) then begin
		minfield_init=minfield	;-same scale for all levels 
		maxfield_init=maxfield	;-same scale for all levels
	endif
	if (n_elements(fieldc_user) eq 0) then begin
		overcontour=0.
		overcontourz=0.
	endif else begin
		overcontour=varcontour[nx,ny,*,theloop]
		overcontourz=0.
	endelse
	if (n_elements(inprofile) gt 1) then begin
		overcontour=inprofile
		overcontourz=0.
		if (n_elements(incolumn) gt 1) then overcontourz=incolumn
	endif

	profile, $
		what_I_plot, $				; 1D vertical profile
		column, $				; altitudes	
	;	alt=alt, $				; altitude range [altmin, altmax]
		minfield=minfield_init, $		; minimum value of plotted field (=0: calculate)
		maxfield=maxfield_init, $		; maximum value of plotted field (=0: calculate)
		inprofile=overcontour, $		; another vertical profile to overplot
		incolumn=overcontourz, $		; altitudes of the other vertical profile (in case /= column)
		title_plot=title, $			; title of the plot ('Profile' is default)
		title_axis=title_axis, $		; title of the [x,y] axis (['Field','Altitude'] is default)
	;	mention=mention, $			; add text precision within the plot window (default is nothing or '')
		discrete=discrete			; show the profile points (= type of points in !psym)
end
else: 
endcase



endfor
device, /close

	; save the profiles for another plot (last of the time loop)
	if ((n_elements(inprofile) le 1) and (plot_user eq 'profile')) then begin
		inprofile=what_I_plot
		incolumn=column
	endif


;******************************************************************************
;
; BEGIN: different from out_wrf
;
;******************************************************************************
;;;skip:
;;;endfor

end