Created attachment 98387 [details]
PyGal generated chart, SVG test file

I'm generating charts using the PyGal library which can be found here:
  http://pygal.org/

I like the ability to build scalable images that can work in both LibreOffice and the web.  Unfortunately, LibreOffice is failing to display the charts I generate.  

When I insert a PyGal generated SVG image (in either calc or write), I get just a black box.  If I instead open the SVG in inkscape, the chart looks fine.  From inkscape I can then save the image as "Plain SVG" in a second file, and then LibreOffice can handle the output of that.

I'm attaching 3 files:
- A PyGal generated SVG
- The Inkscape converted version of the SVG
- A screenshot of what both versions of the SVG look like in calc file


I have compared the SVG source of the two files a bit to see what is different.  The PyGal one has some JavaScript, but stripping this out has no effect on the display in either program.  One big difference is that the PyGal SVG seems to define most styles in a <style> tag and then applies those via classes to the XML file's elements.  The Inkscape "Plain SVG" version seems to have copied all of those style specifications down to each element individually.  So perhaps there are bugs in LibreOffice's interpretation of styles.

Note that I have tested for this issue in several recent versions of LibreOffice.  It exists in all.