On 08/08/2010 12:53 AM, Rob Schneider wrote:
> Running 0.98.5.3
> (would upgrade to 1.0 but having trouble installing it on Mac OS X as it
> doesn't appear to like the version of Python Apple provides).
>
Standard procedure on the Mac is to install the python from python.org.
That way you don't risk fouling up the python that OS X is depending on,
and at the same time your own code can use the version of python that
most extension packages are built for.
> I have a module where there are two functions which call matplotlib to each
> create a different graph which both saved to an output PNG file. The import
> statements:
>
> import matplotlib
> matplotlib.use('Agg')
> import matplotlib.pyplot as plt
> import numpy as np
>
> are at the top of the module file. Neither function imports anything
> specifically, relying on the above imports.
>
> I call each function sequentially. The result is that the first graph is
> created correctly. The second graph is flawed, and in fact shows the legend
> from the first function. When I reverse the function calls, which ever
> graphing function is called first is ok, but second is flawed. If I call each
> function on it's own, within the same Python session, the graphs (both) get
> produced flawlessly.
>
> both charts are bar charts; but one does a stacked bar and the other is a
> simple bar chart.
>
> Why would I not be able to call the two functions sequentially? Why does the
> first call interfere with the second call?
>
I don't think anyone is going to be able to answer this question until
you provide a minimal stand-alone code example. Also, the process of
stripping your code down to the shortest example that displays the
undesired behavior may show you where the problem lies.
Eric
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