Changeset 1359 in lmdz_wrf

Timestamp:

Nov 29, 2016, 10:56:34 AM (8 years ago)

Author:

lfita

Message:

Adding:

`int_to_roman': Convert an integer to Roman numerals
`roman_to_int': Convert a roman numeral to an integer
adding leading zeros on `coldec_hex'

File:

• trunk/tools/generic_tools.py (modified) (4 diffs)

trunk/tools/generic_tools.py

@@ -67 +67 @@
 # index_mat: Function to provide the coordinates of a given value inside a matrix
 # index_vec: Function to provide the coordinates of a given value inside a vector
+# int_to_roman: Convert an integer to Roman numerals
 # julday_360d: Function to provide the julian day of a date in a 360 days/yr (or 12 30-days months) calendar
 # latex_fig_array: Function to add an array of figures to an existing tex file
@@ -91 +92 @@
 # radius_dist: Function to generate a matrix with the distance at a given point
 # replace_list: Function to replace a value in a given list
+# roman_to_int: Convert a roman numeral to an integer
 # same_shape: Function to check if two matrices have the same shape
 # search_sec_list: Function to provide the values and indices on a list which matches a section of a string
@@ -8630 +8632 @@
     fname = 'coldec_hex'
 
-    hexred = '{0:X}'.format(int(col[0]*255))
-    hexgreen = '{0:X}'.format(int(col[1]*255))
-    hexblue = '{0:X}'.format(int(col[2]*255))
+    hexred = '{0:X}'.format(int(col[0]*255)).zfill(2)
+    hexgreen = '{0:X}'.format(int(col[1]*255)).zfill(2)
+    hexblue = '{0:X}'.format(int(col[2]*255)).zfill(2)
 
     if hexred == '0': hexred = '00' 
@@ -10578 +10580 @@
 #quit()
 
+def int_to_roman(input, romanchar='U'):
+   """
+   FROM: http://code.activestate.com/recipes/81611-roman-numerals/
+   Convert an integer to Roman numerals.
+     input= number to transform
+     romanchar= type of characters
+       'l': lower romans: i, v, c, ...
+       'U': upper romans: I, V, C, ... (default)
+   Examples:
+   >>> int_to_roman(0)
+   Traceback (most recent call last):
+   ValueError: Argument must be between 1 and 3999
+
+   >>> int_to_roman(-1)
+   Traceback (most recent call last):
+   ValueError: Argument must be between 1 and 3999
+
+   >>> int_to_roman(1.5)
+   Traceback (most recent call last):
+   TypeError: expected integer, got <type 'float'>
+
+   >>> for i in range(1, 21): print int_to_roman(i)
+   ...
+   I
+   II
+   III
+   IV
+   V
+   VI
+   VII
+   VIII
+   IX
+   X
+   XI
+   XII
+   XIII
+   XIV
+   XV
+   XVI
+   XVII
+   XVIII
+   XIX
+   XX
+   >>> print int_to_roman(2000)
+   MM
+   >>> print int_to_roman(1999)
+   MCMXCIX
+   """
+   if type(input) != type(1):
+      raise TypeError, "expected integer, got %s" % type(input)
+   if not 0 < input < 4000:
+      raise ValueError, "Argument must be between 1 and 3999"   
+   ints = (1000, 900,  500, 400, 100,  90, 50,  40, 10,  9,   5,  4,   1)
+   if romanchar == 'U':
+     nums = ('M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I')
+   elif romanchar == 'l':
+     nums = ('m', 'cm', 'd', 'cd', 'c', 'xc', 'l', 'xl', 'x', 'ix', 'v', 'iv', 'i')
+   else:
+       print errormsg
+       print '  ' + fname + ": roman char '" + romanchar + "' not ready!!"
+       print "    authorized ones: 'U', 'l'"
+       quit(-1)
+   result = ""
+   for i in range(len(ints)):
+      count = int(input / ints[i])
+      result += nums[i] * count
+      input -= ints[i] * count
+   return result
+
+def roman_to_int(input, romanchar='U'):
+   """
+   FROM: http://code.activestate.com/recipes/81611-roman-numerals/
+   Convert a roman numeral to an integer.
+     input= roman number to transform
+     romanchar= type of characters
+       'l': lower romans: i, v, c, ...
+       'U': upper romans: I, V, C, ... (default)
+   >>> r = range(1, 4000)
+   >>> nums = [int_to_roman(i) for i in r]
+   >>> ints = [roman_to_int(n) for n in nums]
+   >>> print r == ints
+   1
+
+   >>> roman_to_int('VVVIV')
+   Traceback (most recent call last):
+    ...
+   ValueError: input is not a valid roman numeral: VVVIV
+   >>> roman_to_int(1)
+   Traceback (most recent call last):
+    ...
+   TypeError: expected string, got <type 'int'>
+   >>> roman_to_int('a')
+   Traceback (most recent call last):
+    ...
+   ValueError: input is not a valid roman numeral: A
+   >>> roman_to_int('IL')
+   Traceback (most recent call last):
+    ...
+   ValueError: input is not a valid roman numeral: IL
+   """
+   if type(input) != type(""):
+      raise TypeError, "expected string, got %s" % type(input)
+   input = input.upper()
+   if romanchar == 'U':
+       nums = ['M', 'D', 'C', 'L', 'X', 'V', 'I']
+   elif romanchar == 'l':
+       nums = ['m', 'd', 'c', 'l', 'x', 'v', 'i']
+   else:
+       print errormsg
+       print '  ' + fname + ": roman char '" + romanchar + "' not ready!!"
+       print "    authorized ones: 'U', 'l'"
+       quit(-1)
+
+   ints = [1000, 500, 100, 50,  10,  5,   1]
+   places = []
+   for c in input:
+      if not c in nums:
+         raise ValueError, "input is not a valid roman numeral: %s" % input
+   for i in range(len(input)):
+      c = input[i]
+      value = ints[nums.index(c)]
+      # If the next place holds a larger number, this value is negative.
+      try:
+         nextvalue = ints[nums.index(input[i +1])]
+         if nextvalue > value:
+            value *= -1
+      except IndexError:
+         # there is no next place.
+         pass
+      places.append(value)
+   sum = 0
+   for n in places: sum += n
+   # Easiest test for validity...
+   if int_to_roman(sum) == input:
+      return sum
+   else:
+      raise ValueError, 'input is not a valid roman numeral: %s' % input