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37 lines
878 B
Python
37 lines
878 B
Python
# Module 'Histogram'
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from Buttons import *
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# A Histogram displays a histogram of numeric data.
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#
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class HistogramAppearance(LabelAppearance, Define):
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#
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def define(self, parent):
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Define.define(self, (parent, ''))
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self.ydata = []
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self.scale = (0, 100)
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return self
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#
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def setdata(self, (ydata, scale)):
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self.ydata = ydata
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self.scale = scale # (min, max)
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self.parent.change(self.bounds)
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#
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def drawpict(self, d):
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(left, top), (right, bottom) = self.bounds
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min, max = self.scale
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size = max-min
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width, height = right-left, bottom-top
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ydata = self.ydata
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npoints = len(ydata)
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v1 = top + height # constant
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h1 = left # changed in loop
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for i in range(npoints):
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h0 = h1
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v0 = top + height - (ydata[i]-min)*height/size
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h1 = left + (i+1) * width/npoints
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d.paint((h0, v0), (h1, v1))
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#
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class Histogram(NoReactivity, HistogramAppearance): pass
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