Adding plots should (at least attempt to) preserve legend options

[orlitzky]

The __add__() method of plots doesn't make any attempt to preserve legend options. This will show the default legend:

sage: p1 = plot(x, x, 0, 1, legend_label='foo')             
sage: p1.set_legend_options(back_color='white', shadow=True)
sage: p2 = p1 + p1                                          
sage: p2._Graphics__legend_opts                             
{}

We do preserve some other information, so it should be easy to add this.

Component: graphics

Author: Michael Orlitzky

Reviewer: Andrey Novoseltsev

Merged: sage-5.1.beta1

Issue created by migration from https://trac.sagemath.org/ticket/12936

[orlitzky]

Author: Michael Orlitzky

[novoselt]

comment:2

This is a nice improvement, but the patch does not apply for me on Sage-5.0.rc0. Either it has to be rebased, or there are some dependencies.

[novoselt]

Reviewer: Andrey Novoseltsev

[orlitzky]

comment:3

Replying to @novoselt:

This is a nice improvement, but the patch does not apply for me on Sage-5.0.rc0. Either it has to be rebased, or there are some dependencies.

Not only that, but I forgot to set any options in the description =)

I just built rc1 and will fix it.

[orlitzky]

Attachment: sage-trac_12936.patch.gz

Merge plot options the same way we do other keyword arguments.

[orlitzky]

comment:4

Should be fixed now. It looks like that method was just moved to graphics.py.

[jdemeyer]

Merged: sage-5.1.beta1