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- # Module 'Histogram'
-
- from Buttons import *
-
- # A Histogram displays a histogram of numeric data.
- #
- class HistogramAppearance(LabelAppearance, Define):
- #
- def define(self, parent):
- Define.define(self, (parent, ''))
- self.ydata = []
- self.scale = (0, 100)
- return self
- #
- def setdata(self, ydata, scale):
- self.ydata = ydata
- self.scale = scale # (min, max)
- self.parent.change(self.bounds)
- #
- def drawpict(self, d):
- (left, top), (right, bottom) = self.bounds
- min, max = self.scale
- size = max-min
- width, height = right-left, bottom-top
- 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
- d.paint((h0, v0), (h1, v1))
- #
-
- class Histogram(NoReactivity, HistogramAppearance): pass
-