Manuel,
We do plots like this all the time. One thing we've found that's
nice to have is a keyword that controls when the increase in y
happens. We use a step style keyword that can be 'pre' (go up then
right), 'post' (go right then up), and 'mid' (right 0.5, up, right 0.5).
Regarding your patch, you might want to check other areas in MPL for
data processing examples. I could be wrong but I'm not sure you can
assume that incoming data is a float. Some of the unit conversion
examples or the line collection code might have better examples.
Ted
At 07:59 AM 8/14/2007, Manuel Metz wrote:
Hi,
I have created a patch against latest svn that adds a function step
to the axes class to plot step-functions ;-) It's really simple but
nice ... Any interest in adding this?
Manuel
Index: axes.py
===================================================================
--- axes.py (revision 3709)
+++ axes.py (working copy)
@@ -4995,6 +4995,18 @@
steps=[1, 2, 5, 10],
integer=True))
return im
+
+ def step(self, x, y, *args, **kwargs):
+ x2 = npy.zeros((2*len(x)), npy.float32)
+ y2 = npy.zeros((2*len(x)), npy.float32)
+
+ x2[0::2] = x
+ x2[1::2] = x
+
+ y2[1::2] = y
+ y2[2::2] = y[:-1]
+
+ self.plot(x2, y2, *args, **kwargs)
class SubplotBase:
"""
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