Puzzling warning when changing a linear loop to a parfor loop. Need help.

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Jakob Sievers
Jakob Sievers on 6 May 2015
Commented: Edric Ellis on 7 May 2015
I am trying to change a linear loop of image exporting to a parallel loop. In linear mode the export_fig (the function I am using, available here in the file exchange) works perfectly. In parallel mode, however, I am getting the following warning, and then the exported figure looks horrible:
Warning: MATLAB cannot use OpenGL for printing when started with the '-nodisplay' option.
> In graphics\private\inputcheck at 143
In print at 156
In print2array at 140
In export_fig at 334
In parallel_function>make_general_channel/channel_general at 914
In remoteParallelFunction at 38
I should say, ofcourse, that the figures are loaded as invisible figures like this:
openfig(fig(i),'new','invisible');
could that be the problem or?
Thanks in advance
Jakob

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