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import operator |
import operator |
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from color import Color |
from color import Color, Transparent |
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from range import Range |
from range import Range |
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from classification import Classification, ClassGroupSingleton, \ |
from classification import Classification, ClassGroupSingleton, \ |
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ClassGroupRange, ClassGroupProperties |
ClassGroupRange, ClassGroupProperties |
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def generate_singletons(_list, numGroups, ramp): |
def generate_singletons(_list, ramp, fixes=(None, None, None)): |
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"""Generate a new classification consisting solely of singletons. |
"""Generate a new classification consisting solely of singletons. |
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The resulting classification will consist of at most 'numGroups' |
The resulting classification will consist of one group for each |
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groups whose group properties ramp between 'prop1' and 'prop2'. There |
item in _list whose properties ramp between 'prop1' and 'prop2'. |
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could be fewer groups if '_list' contains fewer that 'numGroups' items. |
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_list -- a list of values for each singleton |
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_list -- any object that implements the iterator interface |
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numGroups -- how many groups to generate. This can not be |
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determined while the classification is being |
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generated because the stepping values must |
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be precalculated to ramp between prop1 and prop2. |
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ramp -- an object which implements the CustomRamp interface |
ramp -- an object which implements the CustomRamp interface |
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fixes -- a tuple (lineColor, lineWidth, fillColor) such that |
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if any item is not None, the appropriate property will |
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be fixed to that item value. |
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""" |
""" |
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clazz = Classification() |
clazz = Classification() |
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if numGroups == 0: return clazz |
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ramp.SetNumGroups(numGroups) |
i = 0 |
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maxValue = float(len(_list) - 1) |
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for value, prop in zip(_list, ramp): |
if maxValue < 1: maxValue = 1 |
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for value in _list: |
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prop = ramp.GetProperties(i / maxValue) |
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if fixes[0] is not None: prop.SetLineColor(fixes[0]) |
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if fixes[1] is not None: prop.SetLineWidth(fixes[1]) |
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if fixes[2] is not None: prop.SetFill(fixes[2]) |
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clazz.AppendGroup(ClassGroupSingleton(value, prop)) |
clazz.AppendGroup(ClassGroupSingleton(value, prop)) |
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i += 1 |
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return clazz |
return clazz |
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def generate_uniform_distribution(min, max, numGroups, ramp, intStep = False): |
def generate_uniform_distribution(min, max, numGroups, ramp, intStep = False, |
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fixes = (None, None, None)): |
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"""Generate a classification with numGroups range groups |
"""Generate a classification with numGroups range groups |
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each with the same interval. |
each with the same interval. |
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Useful if the values are integers but the |
Useful if the values are integers but the |
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number of groups specified doesn't evenly |
number of groups specified doesn't evenly |
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divide (max - min). |
divide (max - min). |
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fixes -- a tuple (lineColor, lineWidth, fillColor) such that |
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if any item is not None, the appropriate property will |
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be fixed to that item value. |
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""" |
""" |
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clazz = Classification() |
clazz = Classification() |
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if numGroups == 0: return clazz |
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ramp.SetNumGroups(numGroups) |
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cur_min = min |
cur_min = min |
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i = 1 |
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end = "[" |
end = "[" |
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for prop in ramp: |
maxValue = float(numGroups - 1) |
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if maxValue < 1: maxValue = 1 |
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for i in range(1, numGroups + 1): |
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prop = ramp.GetProperties(float(i-1) / maxValue) |
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if intStep: |
if intStep: |
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cur_max = min + int(round((i * (max - min + 1)) / float(numGroups))) |
cur_max = min + int(round((i * (max - min + 1)) / float(numGroups))) |
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end = "]" |
end = "]" |
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if cur_min == cur_max: |
if cur_min == cur_max: |
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range = Range(("[", cur_min, cur_max, "]")) |
_range = Range(("[", cur_min, cur_max, "]")) |
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else: |
else: |
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range = Range(("[", cur_min, cur_max, end)) |
_range = Range(("[", cur_min, cur_max, end)) |
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if fixes[0] is not None: prop.SetLineColor(fixes[0]) |
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if fixes[1] is not None: prop.SetLineWidth(fixes[1]) |
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if fixes[2] is not None: prop.SetFill(fixes[2]) |
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clazz.AppendGroup(ClassGroupRange(range, None, prop)) |
clazz.AppendGroup(ClassGroupRange(_range, prop)) |
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cur_min = cur_max |
cur_min = cur_max |
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i += 1 |
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return clazz |
return clazz |
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def generate_quantiles(_list, percents, ramp, _range, fixes=(None, None, None)): |
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def generate_quantiles(_list, percents, ramp, _range): |
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"""Generates a Classification which has groups of ranges that |
"""Generates a Classification which has groups of ranges that |
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represent quantiles of _list at the percentages given in percents. |
represent quantiles of _list at the percentages given in percents. |
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Only the values that fall within _range are considered. |
Only the values that fall within _range are considered. |
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_range -- a Range object |
_range -- a Range object |
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fixes -- a tuple (lineColor, lineWidth, fillColor) such that |
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if any item is not None, the appropriate property will |
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be fixed to that item value. |
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Raises a Value Error if 'percents' has fewer than two items, or |
Raises a Value Error if 'percents' has fewer than two items, or |
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does not cover the entire range. |
does not cover the entire range. |
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""" |
""" |
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adjusted = quantiles[0] |
adjusted = quantiles[0] |
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ramp.SetNumGroups(numGroups) |
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start, min, endMax, right = _range.GetRange() |
start, min, endMax, right = _range.GetRange() |
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oldp = 0 |
oldp = 0 |
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i = 1 |
i = 1 |
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end = "]" |
end = "]" |
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for (q, p), prop in zip(quantiles[3], ramp): |
maxValue = float(numGroups - 1) |
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if maxValue < 1: maxValue = 1 |
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for (q, p) in quantiles[3]: |
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prop = ramp.GetProperties(float(i-1) / maxValue) |
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if i == numGroups: |
if i == numGroups: |
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max = endMax |
max = endMax |
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end = right |
end = right |
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else: |
else: |
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max = _list[q] |
max = _list[q] |
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group = ClassGroupRange(Range((start, min, max, end)), |
if fixes[0] is not None: prop.SetLineColor(fixes[0]) |
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None, prop) |
if fixes[1] is not None: prop.SetLineWidth(fixes[1]) |
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if fixes[2] is not None: prop.SetFill(fixes[2]) |
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group = ClassGroupRange(Range((start, min, max, end)), prop) |
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group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2), |
group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2), |
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round(p*100, 2))) |
round(p*100, 2))) |
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if numGroups > 0: |
if numGroups > 0: |
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adjusted = quantiles[0] |
adjusted = quantiles[0] |
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ramp.SetNumGroups(numGroups) |
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start, min, endMax, right = _range.GetRange() |
start, min, endMax, right = _range.GetRange() |
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class0 = quantiles[3][0] |
class0 = quantiles[3][0] |
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i = 1 |
i = 1 |
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end = "]" |
end = "]" |
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for (q, p), prop in zip(quantiles[3][1:], ramp): |
maxValue = float(numGroups - 1) |
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if maxValue < 1: maxValue = 1 |
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for (q, p) in quantiles[3][1:]: |
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prop = ramp.GetProperties(float(i-1) / maxValue) |
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if i == numGroups: |
if i == numGroups: |
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max = endMax |
max = endMax |
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end = right |
end = right |
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else: |
else: |
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max = _list[q] |
max = _list[q] |
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group = ClassGroupRange(Range((start, min, max, end)), |
group = ClassGroupRange(Range((start, min, max, end)), prop) |
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None, prop) |
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group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2), |
group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2), |
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round(p*100, 2))) |
round(p*100, 2))) |
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if len(percents) <= 1: |
if len(percents) <= 1: |
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raise ValueError("percents parameter must have more than one item") |
raise ValueError("percents parameter must have more than one item") |
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if percents[len(percents) - 1] != 1.0: |
if percents[-1] != 1.0: |
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raise ValueError("percents does not cover the entire range") |
raise ValueError("percents does not cover the entire range") |
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# |
# |
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[(q, (q - minIndex+1) / float(numValues)) \ |
[(q, (q - minIndex+1) / float(numValues)) \ |
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for q in quantiles]) |
for q in quantiles]) |
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CLR = 0 |
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STEP = 1 |
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class CustomRamp: |
class CustomRamp: |
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def __init__(self, prop1, prop2): |
def __init__(self, prop1, prop2): |
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self.prop1 = prop1 |
self.prop1 = prop1 |
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self.prop2 = prop2 |
self.prop2 = prop2 |
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self.count = 0 |
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def __iter__(self): |
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return self |
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def GetRamp(self): |
def GetRamp(self): |
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return self |
return self |
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def SetNumGroups(self, num): |
def GetProperties(self, index): |
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"""Return a ClassGroupProperties object whose properties |
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if num <= 0: |
represent a point at 'index' between prop1 and prop2 in |
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return False |
the constructor. |
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self.count = int(num) |
index -- a value such that 0 <= index <= 1 |
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num = float(num) |
""" |
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prop1 = self.prop1 |
if not (0 <= index <= 1): |
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prop2 = self.prop2 |
raise ValueError(_("invalid index")) |
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clr = prop1.GetLineColor() |
newProps = ClassGroupProperties() |
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lineColor2 = prop2.GetLineColor() |
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self.__SetProperty(self.prop1.GetLineColor(), |
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self.noLine = clr is not Color.Transparent \ |
self.prop2.GetLineColor(), |
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and lineColor2 is not Color.Transparent |
index, newProps.SetLineColor) |
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self.__SetProperty(self.prop1.GetFill(), self.prop2.GetFill(), |
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index, newProps.SetFill) |
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self.lineInfo = self.__GetColorInfo(prop1.GetLineColor(), |
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prop2.GetLineColor(), |
w = (self.prop2.GetLineWidth() - self.prop1.GetLineWidth()) \ |
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num) |
* index \ |
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+ self.prop1.GetLineWidth() |
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self.fillInfo = self.__GetColorInfo(prop1.GetFill(), |
newProps.SetLineWidth(int(round(w))) |
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prop2.GetFill(), |
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num) |
return newProps |
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self.lineWidth = prop1.GetLineWidth() |
def __SetProperty(self, color1, color2, index, setf): |
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self.lineWidthStep = (prop2.GetLineWidth() - self.lineWidth) / num |
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if color1 is Transparent and color2 is Transparent: |
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return True |
setf(Transparent) |
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elif color1 is Transparent: |
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def next(self): |
setf(Color( |
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if self.count == 0: |
color2.red * index, |
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raise StopIteration |
color2.green * index, |
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color2.blue * index)) |
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prop = ClassGroupProperties() |
elif color2 is Transparent: |
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setf(Color( |
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if self.lineInfo is None: |
color1.red * index, |
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prop.SetLineColor(Color.Transparent) |
color1.green * index, |
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else: |
color1.blue * index)) |
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prop.SetLineColor(Color(self.lineInfo[CLR][0] / 255, |
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self.lineInfo[CLR][1] / 255, |
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self.lineInfo[CLR][2] / 255)) |
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self.lineInfo[CLR][0] += self.lineInfo[STEP][0] |
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self.lineInfo[CLR][1] += self.lineInfo[STEP][1] |
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self.lineInfo[CLR][2] += self.lineInfo[STEP][2] |
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if self.fillInfo is None: |
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prop.SetFill(Color.Transparent) |
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else: |
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prop.SetFill(Color(self.fillInfo[CLR][0] / 255, |
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self.fillInfo[CLR][1] / 255, |
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self.fillInfo[CLR][2] / 255)) |
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self.fillInfo[CLR][0] += self.fillInfo[STEP][0] |
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self.fillInfo[CLR][1] += self.fillInfo[STEP][1] |
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self.fillInfo[CLR][2] += self.fillInfo[STEP][2] |
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prop.SetLineWidth(int(self.lineWidth)) |
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self.lineWidth += self.lineWidthStep |
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self.count -= 1 |
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return prop |
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def __GetColorInfo(self, color1, color2, numGroups): |
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if color1 is Color.Transparent and color2 is Color.Transparent: |
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# |
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# returning early |
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# |
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return None |
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elif color1 is not Color.Transparent and color2 is Color.Transparent: |
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color = [color1.red * 255, |
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color1.green * 255, |
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color1.blue * 255] |
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step = (0, 0, 0) |
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elif color1 is Color.Transparent and color2 is not Color.Transparent: |
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color = [color2.red * 255, |
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color2.green * 255, |
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color2.blue * 255] |
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step = (0, 0, 0) |
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else: |
else: |
451 |
color = [color1.red * 255, |
setf(Color( |
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color1.green * 255, |
(color2.red - color1.red) * index + color1.red, |
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color1.blue * 255] |
(color2.green - color1.green) * index + color1.green, |
454 |
step = ((color2.red * 255 - color1.red * 255) / numGroups, |
(color2.blue - color1.blue) * index + color1.blue)) |
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(color2.green * 255 - color1.green * 255) / numGroups, |
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(color2.blue * 255 - color1.blue * 255) / numGroups) |
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return (color, step) |
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class MonochromaticRamp(CustomRamp): |
class MonochromaticRamp(CustomRamp): |
457 |
def __init__(self, start, end): |
def __init__(self, start, end): |
465 |
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CustomRamp.__init__(self, sp, ep) |
CustomRamp.__init__(self, sp, ep) |
467 |
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class GreyRamp(MonochromaticRamp): |
GreyRamp = MonochromaticRamp(Color(1, 1, 1), Color(0, 0, 0)) |
469 |
def __init__(self): |
RedRamp = MonochromaticRamp(Color(1, 1, 1), Color(.8, 0, 0)) |
470 |
MonochromaticRamp.__init__(self, Color(1, 1, 1), Color(0, 0, 0)) |
GreenRamp = MonochromaticRamp(Color(1, 1, 1), Color(0, .8, 0)) |
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BlueRamp = MonochromaticRamp(Color(1, 1, 1), Color(0, 0, .8)) |
472 |
class RedRamp(MonochromaticRamp): |
GreenToRedRamp = MonochromaticRamp(Color(0, .8, 0), Color(1, 0, 0)) |
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def __init__(self): |
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MonochromaticRamp.__init__(self, Color(1, 1, 1), Color(.8, 0, 0)) |
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class GreenRamp(MonochromaticRamp): |
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def __init__(self): |
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MonochromaticRamp.__init__(self, Color(1, 1, 1), Color(0, .8, 0)) |
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class BlueRamp(MonochromaticRamp): |
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def __init__(self): |
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MonochromaticRamp.__init__(self, Color(1, 1, 1), Color(0, 0, .8)) |
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class GreenToRedRamp(MonochromaticRamp): |
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def __init__(self): |
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MonochromaticRamp.__init__(self, Color(0, .8, 0), Color(1, 0, 0)) |
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473 |
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474 |
class HotToColdRamp: |
class HotToColdRamp: |
475 |
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def __iter__(self): |
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return self |
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476 |
def GetRamp(self): |
def GetRamp(self): |
477 |
return self |
return self |
478 |
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479 |
def SetNumGroups(self, num): |
def GetProperties(self, index): |
480 |
if num < 0: |
"""Return a ClassGroupProperties object whose properties |
481 |
return False |
represent a point at 'index' between "hot" and "cold". |
482 |
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|
483 |
self.num = float(num) |
index -- a value such that 0 <= index <= 1 |
484 |
self.index = 0 |
""" |
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return True |
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def next(self): |
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if self.index == self.num: |
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raise StopIteration |
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485 |
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486 |
clr = [1.0, 1.0, 1.0] |
clr = [1.0, 1.0, 1.0] |
487 |
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|
488 |
if self.index < (.25 * self.num): |
if index < .25: |
489 |
clr[0] = 0 |
clr[0] = 0 |
490 |
clr[1] = 4 * self.index / self.num |
clr[1] = 4 * index |
491 |
elif self.index < (.5 * self.num): |
elif index < .5: |
492 |
clr[0] = 0 |
clr[0] = 0 |
493 |
clr[2] = 1 + 4 * (.25 * self.num - self.index) / self.num |
clr[2] = 1 + 4 * (.25 - index) |
494 |
elif self.index < (.75 * self.num): |
elif index < .75: |
495 |
clr[0] = 4 * (self.index - .5 * self.num) / self.num |
clr[0] = 4 * (index - .5) |
496 |
clr[2] = 0 |
clr[2] = 0 |
497 |
else: |
else: |
498 |
clr[1] = 1 + 4 * (.75 * self.num - self.index) / self.num |
clr[1] = 1 + 4 * (.75 - index) |
499 |
clr[2] = 0 |
clr[2] = 0 |
500 |
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self.index += 1 |
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|
501 |
prop = ClassGroupProperties() |
prop = ClassGroupProperties() |
502 |
prop.SetLineColor(Color(clr[0], clr[1], clr[2])) |
prop.SetLineColor(Color(clr[0], clr[1], clr[2])) |
503 |
prop.SetFill(Color(clr[0], clr[1], clr[2])) |
prop.SetFill(Color(clr[0], clr[1], clr[2])) |
504 |
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505 |
return prop |
return prop |
506 |
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