Forcing painters renderer breaks images

[durack1]

I pulled the latest version (26eb699) of export_fig yesterday, so this should be directly reproducible.

This issue replicates #107 (superscripts in figure axes), but also goes further than this as the output from the -opengl vs -painters renderer option yields very different (and incorrect) output. This can be most easily described with examples.

So I generate a figure which looks fine on the screen, and using -opengl or -painters I get the following, for completeness the command is (with either renderer specified):

export_fig([out_dir,datestr(now,'yymmdd'),'_Fig',fignum],'-eps','-opengl')

So the OPENGL output looks like

And the PAINTERS output looks broken, with the fill seeming to be mixed across layers, like

A similar issue also occurs with another figure, so

OPENGL

PAINTERS with text missing along with lines that should be bolded not in the Pacific and Indian oceans

Is this an export_fig issue, or matlab?

For completeness:

MATLAB Version: 9.5.0.944444 (R2018b)
Operating System: Linux 2.6.32-754.3.5.el6.x86_64 #1 SMP Thu Aug 9 11:56:22 EDT 2018 x86_64
Java Version: Java 1.8.0_152-b16 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
Export_fig Version: current master (26eb699)

[altmany]

I believe that the problem is due to internal bug(s) in Matlab's builtin print function (which is used by export_fig). In order to verify this, please run the following command and check whether you see the same problems in the resulting test.eps file:

print(gcf, '-loose', '-opengl', '-r864', '-depsc2', 'test.eps')

If you see the same problems, then you should report these to Mathworks (support@mathworks.com).
If you do NOT see the problems, then this means it's a problem in export_fig - in this case I may be able to fix it.

Let me know what happens.

[durack1]

@altmany thanks for that, so I did run this through using the command above (with a tweak to the filename) and got this:

So it does indeed appear to be an issue with export_fig

[durack1]

@altmany and for completeness, this is the second figure which also checks out fine.. I do note the file size has jumped considerably though from 6.8 to 25.5Mb.

[altmany]

Email me the *.fig file for the figure with the charts and I will investigate - altmany (at) gmail

[durack1]

@altmany thanks for this, I have sent these through via email. Happy holidays!

[altmany]

@durack1 - I ran your figures through Matlab's builtin print command and the resulting EPS files show the same problems as the ones that you reported:

print(gcf, '-loose', '-opengl',   '-r864', '-depsc2', 'test-opengl.eps')    % ok
print(gcf, '-loose', '-painters', '-r864', '-depsc2', 'test-painters.eps')  % not ok

This proves that it's a problem with Matlab's builtin print command, and not with export_fig. I suggest that you report this to Mathworks (support@mathworks.com).