/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/classgen.py
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revision 1359 by jonathan, Wed Jul 2 10:51:49 2003 UTC revision 1361 by jonathan, Wed Jul 2 12:59:20 2003 UTC
# Line 26  def generate_singletons(_list, ramp): Line 26  def generate_singletons(_list, ramp):
26      The resulting classification will consist of one group for each      The resulting classification will consist of one group for each
27      item in _list whose properties ramp between 'prop1' and 'prop2'.      item in _list whose properties ramp between 'prop1' and 'prop2'.
28    
29      _list -- any object that implements the iterator interface      _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
32      """      """
# Line 35  def generate_singletons(_list, ramp): Line 35  def generate_singletons(_list, ramp):
35    
36      i = 0      i = 0
37      maxValue = float(len(_list) - 1)      maxValue = float(len(_list) - 1)
38        if maxValue < 1: maxValue = 1
39    
40      for value in _list:      for value in _list:
41          prop = ramp.GetProperties(i / maxValue)          prop = ramp.GetProperties(i / maxValue)
42          clazz.AppendGroup(ClassGroupSingleton(value, prop))          clazz.AppendGroup(ClassGroupSingleton(value, prop))
# Line 58  def generate_uniform_distribution(min, m Line 60  def generate_uniform_distribution(min, m
60    
61      end = "["      end = "["
62      maxValue = float(numGroups - 1)      maxValue = float(numGroups - 1)
63        if maxValue < 1: maxValue = 1
64    
65      for i in range(1, numGroups + 1):      for i in range(1, numGroups + 1):
66    
67          prop = ramp.GetProperties(float(i-1) / maxValue)          prop = ramp.GetProperties(float(i-1) / maxValue)
68    
69          if intStep:          if intStep:
70              cur_max = min + int(round((i * (max - min + 1)) / maxValue))              cur_max = min + int(round((i * (max - min + 1)) / float(numGroups)))
71          else:          else:
72              cur_max = min + (i * (max - min)) / maxValue              cur_max = min + (i * (max - min)) / float(numGroups)
73    
74          if i == numGroups:          if i == numGroups:
75              cur_max = max              cur_max = max
# Line 125  def generate_quantiles(_list, percents, Line 129  def generate_quantiles(_list, percents,
129              end = "]"              end = "]"
130    
131              maxValue = float(numGroups - 1)              maxValue = float(numGroups - 1)
132                if maxValue < 1: maxValue = 1
133              for (q, p) in quantiles[3]:              for (q, p) in quantiles[3]:
134    
135                  prop = ramp.GetProperties(float(i-1) / maxValue)                  prop = ramp.GetProperties(float(i-1) / maxValue)
# Line 189  def GenQuantiles0(_list, percents, ramp, Line 194  def GenQuantiles0(_list, percents, ramp,
194              end = "]"              end = "]"
195    
196              maxValue = float(numGroups - 1)              maxValue = float(numGroups - 1)
197                if maxValue < 1: maxValue = 1
198              for (q, p) in quantiles[3][1:]:              for (q, p) in quantiles[3][1:]:
199                  prop = ramp.GetProperties(float(i-1) / maxValue)                  prop = ramp.GetProperties(float(i-1) / maxValue)
200    
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