matplotlib-users

[Matplotlib-users] question about legends

[danny s. <dan...@ya...>]

I have a main routine that calls a subroutine twice. In the subroutine,
a plot is drawn. If the active figure is the same, both plots are shown
at the same time in the same figure. The problem is that both plots
have legends, and it appears as if a figure can only have one legend,
so one of the legends is overwritten (the first). The question is, what
is the best way to get the legends to be appended so that all graph
lines have legends.

Thanks,
Danny


		
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Re: [Matplotlib-users] question about legends

[John H. <jdh...@ac...>]

>>>>> "danny" == danny shevitz <dan...@ya...> writes:

    danny> I have a main routine that calls a subroutine twice. In the
    danny> subroutine, a plot is drawn. If the active figure is the
    danny> same, both plots are shown at the same time in the same
    danny> figure. The problem is that both plots have legends, and it
    danny> appears as if a figure can only have one legend, so one of
    danny> the legends is overwritten (the first). The question is,
    danny> what is the best way to get the legends to be appended so
    danny> that all graph lines have legends.

I don't really understand what your problem is, but I have a few
comments.

For "figure legends" you want to use the figlegend command, as opposed
to axes legends which use the legend command.  You can have an
arbitrary number of figure legends on the same figure.

However, there is a bug in the figure legend code in matplotlib-0.54.2
that Jim Benson discovered.  In matplotlib/figure.py, you need to
replace the line that reads

        l = Legend(handles, labels, loc)

with

        l = Legend(self, handles, labels, loc)

If you have more troubles, please post some code as that might help me
understand what you are trying to do.

JDH

		
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