cpython/Lib/stdwin/Histogram.py

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