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| 153 |
return (adjusted, clazz) |
return (adjusted, clazz) |
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def GenQuantiles0(_list, percents, ramp, _range): |
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"""Same as GenQuantiles, but the first class won't be added to |
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the classification. |
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Returns a tuple (adjusted, Classification, upper_class0) where |
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upper_class0 is the highest value inside the first class. |
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_list -- a sort list of values |
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percents -- a sorted list of floats in the range 0.0-1.0 which |
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represent the upper bound of each quantile. the |
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union of all percentiles should be the entire |
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range from 0.0-1.0 |
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ramp -- an object which implements the CustomRamp interface |
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_range -- a Range object |
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Raises a Value Error if 'percents' has fewer than two items, or |
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does not cover the entire range. |
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""" |
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clazz = Classification() |
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quantiles = calculate_quantiles(_list, percents, _range) |
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adjusted = True |
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if quantiles is not None: |
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numGroups = len(quantiles[3]) - 1 |
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if numGroups > 0: |
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adjusted = quantiles[0] |
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start, min, endMax, right = _range.GetRange() |
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class0 = quantiles[3][0] |
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min = _list[class0[0]] |
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oldp = class0[1] |
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i = 1 |
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end = "]" |
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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: |
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max = endMax |
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end = right |
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else: |
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max = _list[q] |
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group = ClassGroupRange(Range((start, min, max, end)), prop) |
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group.SetLabel("%s%% - %s%%" % (round(oldp*100, 2), |
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round(p*100, 2))) |
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oldp = p |
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start = "]" |
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min = max |
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clazz.AppendGroup(group) |
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i += 1 |
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return (adjusted, clazz, _list[class0[0]]) |
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| 155 |
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| 156 |
def calculate_quantiles(_list, percents, _range): |
def calculate_quantiles(_list, percents, _range): |
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"""Calculate quantiles for the given _list of percents from the |
"""Calculate quantiles for the given _list of percents from the |
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