Patch error on m_plots

Dan Williams

2019 2 28

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In a for loop, I am plotting frames of a GIF. There are two subplots, two 'm_pcolor', one 'm_quiver'. These are from the m_map toolbox. I am using the following code to get the GIF made: (If I comment this, the error still remains)

    drawnow
      filename = 'testnew.gif';
      frame = getframe(1);
      im = frame2im(frame);
      [imind,cm] = rgb2ind(im,256);
      if time_loop == 1
          imwrite(imind,cm,filename,'gif','Loopcount',inf);
      else
          imwrite(imind,cm,filename,'gif','WriteMode','append');
      end

The error I get for every loop is:

 Warning: Error creating or updating Patch
 Error in value of property  FaceVertexCData
 Number of colors must equal number of vertices 

If I remove the for loop and run the code inside the loop on its own, everything works fine. Everything plots OK, but seems slower with the error.

What does the error mean? Is there any solution?

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Walter Roberson 2019-2-28

Is the error showing up at the drawnow() ? Is it showing up at the getframe() call?

It looks like you are hard-coding fetching frames from figure #1, using old style figure numbers (that does still work even in the latest releases, by the way.)

Is it correct that you have a patch() object in your figure?

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