chombee wrote:
> My legend shows both plots as the same colour (blue) when in fact they
> are different colours. Here's the relevant code:
>
> font = FontProperties(size='small');
> ...
> b1 = bar(i,lowermeans,width,color='b')
> b2 = bar(i+width,uppermeans,width,color='y')
> ...
> legend((b1,b2),(l,u),prop=font)
>
> I use legend exactly like this elsewhere and it works. So I can't figure
> out why in this case the legend shows both bars as blue.
>
I managed to replicate with this example:
import numpy as N
import matplotlib.pyplot as P
lowermeans = N.arange(10)
uppermeans = lowermeans + 2
i = N.arange(0,len(lowermeans))
width = 0.4
b1 = P.bar(i,lowermeans,width,color='b')
b2 = P.bar(i+width,uppermeans,width,color='y')
P.legend((b1,b2),('lower','upper'))
Changing the legend call to this fixed it:
P.legend((b1[0],b2[0]),('lower','upper'))
It seems to work since a list of patch objects is returned by the calls
to bar, and legend seems to only use the first two objects from the
*first* list. The question is, is it a bug, because it *is* very
unexpected behavior?
Ryan
--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
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