On Tue, Dec 14, 2010 at 2:29 PM, Skip Montanaro <s...@pobox.com> wrote:
> I am plotting a time series, a handful of moving averages and the
> standard deviation of one of the moving averages. The first crop of
> data are all in an overlapping range so are plotted using the
> left-hand y axis. The standard deviation range falls way outside the
> ranges of the other data streams, so I plot it on the right- hand
> axis.
>
> Since legends are associated with an axis how do I create one legend
> which covers all lines in the graph? I keep getting a complaint from
> mpl about the number of labels not matching the number of arrays being
> plotted (one v. five if I get the legend associated with the
> right-hand axis, four v. five if I get the legend associated with the
> left-hand axis).
>
> Thanks,
>
> Skip Montanaro
> s...@pobox.com
>
>
>
Skip,
You can call figlegend() and build a legend for the figure, irrespectively
of any axes. With this function, you can explicitly pass it a list of the
line objects and the labels.
http://matplotlib.sourceforge.net/api/pyplot_api.html?highlight=legend#matplotlib.pyplot.figlegend
I don't think it can automatically know about all of the lines in your graph
(then again, I haven't tried and maybe it does).
I hope this helps!
Ben Root
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