/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/classgen.py
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revision 1387 by jonathan, Thu Jul 10 14:53:03 2003 UTC revision 1425 by jonathan, Wed Jul 16 13:21:59 2003 UTC
# Line 20  from range import Range Line 20  from range import Range
20  from classification import Classification, ClassGroupSingleton, \  from classification import Classification, ClassGroupSingleton, \
21      ClassGroupRange, ClassGroupProperties      ClassGroupRange, ClassGroupProperties
22    
23  def generate_singletons(_list, ramp, fixes=(None, None, None)):  def generate_singletons(_list, ramp):
24      """Generate a new classification consisting solely of singletons.      """Generate a new classification consisting solely of singletons.
25    
26      The resulting classification will consist of one group for each      The resulting classification will consist of one group for each
# Line 29  def generate_singletons(_list, ramp, fix Line 29  def generate_singletons(_list, ramp, fix
29      _list -- a list of values for each singleton      _list -- a list of values for each singleton
30    
31      ramp -- an object which implements the CustomRamp interface      ramp -- an object which implements the CustomRamp interface
   
     fixes -- a tuple (lineColor, lineWidth, fillColor) such that  
              if any item is not None, the appropriate property will  
              be fixed to that item value.  
32      """      """
33    
34      clazz = Classification()      clazz = Classification()
# Line 43  def generate_singletons(_list, ramp, fix Line 39  def generate_singletons(_list, ramp, fix
39    
40      for value in _list:      for value in _list:
41          prop = ramp.GetProperties(i / maxValue)          prop = ramp.GetProperties(i / maxValue)
         if fixes[0] is not None: prop.SetLineColor(fixes[0])  
         if fixes[1] is not None: prop.SetLineWidth(fixes[1])  
         if fixes[2] is not None: prop.SetFill(fixes[2])  
42          clazz.AppendGroup(ClassGroupSingleton(value, prop))          clazz.AppendGroup(ClassGroupSingleton(value, prop))
43          i += 1          i += 1
44    
45      return clazz      return clazz
46    
47  def generate_uniform_distribution(min, max, numGroups, ramp, intStep = False,  def generate_uniform_distribution(min, max, numGroups, ramp, intStep = False):
                                   fixes = (None, None, None)):  
48      """Generate a classification with numGroups range groups      """Generate a classification with numGroups range groups
49      each with the same interval.      each with the same interval.
50    
# Line 60  def generate_uniform_distribution(min, m Line 52  def generate_uniform_distribution(min, m
52                 Useful if the values are integers but the                 Useful if the values are integers but the
53                 number of groups specified doesn't evenly                 number of groups specified doesn't evenly
54                 divide (max - min).                 divide (max - min).
   
     fixes -- a tuple (lineColor, lineWidth, fillColor) such that  
              if any item is not None, the appropriate property will  
              be fixed to that item value.  
55      """      """
56    
57      clazz = Classification()      clazz = Classification()
# Line 92  def generate_uniform_distribution(min, m Line 80  def generate_uniform_distribution(min, m
80          else:          else:
81              _range = Range(("[", cur_min, cur_max, end))              _range = Range(("[", cur_min, cur_max, end))
82    
         if fixes[0] is not None: prop.SetLineColor(fixes[0])  
         if fixes[1] is not None: prop.SetLineWidth(fixes[1])  
         if fixes[2] is not None: prop.SetFill(fixes[2])  
   
83          clazz.AppendGroup(ClassGroupRange(_range, prop))          clazz.AppendGroup(ClassGroupRange(_range, prop))
84    
85          cur_min = cur_max          cur_min = cur_max
86    
87      return clazz      return clazz
88    
89  def generate_quantiles(_list, percents, ramp, _range, fixes=(None, None, None)):  def generate_quantiles(_list, percents, ramp, _range):
90      """Generates a Classification which has groups of ranges that      """Generates a Classification which has groups of ranges that
91      represent quantiles of _list at the percentages given in percents.      represent quantiles of _list at the percentages given in percents.
92      Only the values that fall within _range are considered.      Only the values that fall within _range are considered.
# Line 122  def generate_quantiles(_list, percents, Line 106  def generate_quantiles(_list, percents,
106    
107      _range -- a Range object      _range -- a Range object
108    
     fixes -- a tuple (lineColor, lineWidth, fillColor) such that  
              if any item is not None, the appropriate property will  
              be fixed to that item value.  
   
109      Raises a Value Error if 'percents' has fewer than two items, or      Raises a Value Error if 'percents' has fewer than two items, or
110      does not cover the entire range.      does not cover the entire range.
111      """      """
# Line 160  def generate_quantiles(_list, percents, Line 140  def generate_quantiles(_list, percents,
140                  else:                  else:
141                      max = _list[q]                      max = _list[q]
142    
                 if fixes[0] is not None: prop.SetLineColor(fixes[0])  
                 if fixes[1] is not None: prop.SetLineWidth(fixes[1])  
                 if fixes[2] is not None: prop.SetFill(fixes[2])  
   
143                  group = ClassGroupRange(Range((start, min, max, end)), prop)                  group = ClassGroupRange(Range((start, min, max, end)), prop)
144            
145                  group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2),                  group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2),
# Line 504  class HotToColdRamp: Line 480  class HotToColdRamp:
480    
481          return prop          return prop
482    
483    class FixedRamp:
484        """FixedRamp allows particular properties of a ramp to be
485        held constant over the ramp.
486        """
487    
488        def __init__(self, ramp, fixes):
489            """
490            ramp -- a source ramp to get the default properties
491    
492            fixes -- a tuple (lineColor, lineWidth, fillColor) such that
493                 if any item is not None, the appropriate property will
494                 be fixed to that item value.
495            """
496    
497            self.fixes = fixes
498            self.ramp = ramp
499    
500        def GetRamp(self):
501            return self
502    
503        def GetProperties(self, index):
504            props = self.ramp.GetProperties(index)
505            if self.fixes[0] is not None: props.SetLineColor(self.fixes[0])
506            if self.fixes[1] is not None: props.SetLineWidth(self.fixes[1])
507            if self.fixes[2] is not None: props.SetFill(self.fixes[2])
508    
509            return props
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