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I stumbled over the same problem over and over again, as well.
I think it is difficult to blame either inkscape or matplotlib. The SVG
code is correct and Inkscape displays it correctly. The difficulty is
that the SVG standard does not say anything about the correct *editing*
behavior. The "ungroup" of inkscape seems to handle the definitions
within the group that is ungrouped in such a way that the individual
elements cannot access them correctly any more.
I think the best fix would be in both, matplotlib and inkscape.
matplotlib has no need to put the definitions inside the group and can
simply avoid that, but still inkscape should cope with this kind of
(legal!) SVG code in a better way.
Manuel Metz wrote:
> Hi,
>
> I have a problem with the svg output of matplotlib. I created a
> scatter plot and saved it to svg. For the scatter plot I used two
> kinds of symbols to mark different types of data. Afterwards I opened
> the file using Inkscape to make some minor modifications. When opening
> the file it looked fine (see Screenshot1.png). However, to do the
> modifications I had to 'ungroup' the axis. After that one group of the
> two markers disappeared from the plot (see Screenshot2.png). The data
> is however not deleted, it's just invisible in Inkscape (but not in
> Firefox ;-).
>
> I suspect it has to do with the clipPath definition, which is defined
> for the regpolycollection4 (the green triangles, which are plotted
> first) but not for the regploycollection5 (the blue dots, which are
> plotted second).
>
> Is there any reason why a clipPath is defined for only one of the
> Collections? I'm not sure whether this is a bug in matplotlib svg
> output or Inkscape, but naively I would say that Inkscape behaves
> correct here.
>
> Hope this can be fixed,
> Manuel
>
> Uuuu, btw. I'm using matplotlib 0.90.1
>
>
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