1 files changed, 36 insertions, 0 deletions
diff --git a/lib/Histogram.py b/lib/Histogram.py
new file mode 100644
index 0000000..3f6da76
--- /dev/null
+++ b/lib/Histogram.py
@@ -0,0 +1,36 @@
+# 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