37 lines
878 B
Python
37 lines
878 B
Python
# 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
|