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From: Vinesh Rajpaul on 12 Jul 2010 17:22
Hi -

The problem you mentioned (the "white crisscrossed lines") frustrated the hell out of me for a while. As far as I can tell, the problem lies not with MATLAB's image rendering but rather with the anti-aliasing routine used in most PDF/EPS viewers. In other words the output from MATLAB is fine but the PDF viewer is not rendering the image correctly. If you can find a way to turn the anti-aliasing (in your PDF/EPS viewer) off, I think the problem will likely go away. E.g. if you are using Adobe Reader: go to Preferences > Page Display > disable the "smooth line art" setting. This sorted out the issue for me!

"Dan Jones" <Daniel.Jones(a)colostate.edu> wrote in message <hqpv1p$hi$1(a)fred.mathworks.com>...
> Hi all,
>
> I'm using pcolor (with interpolated shading) to create a figure. My goal is to then use Adobe Illustrator (CS3) to produce a publication-quality graphic.
>
> The figure that Matlab produces looks great, but once I save the image in EPS or PDF format, the quality goes down considerably. The image is crisscrossed with white lines that form triangular polygons. I guess those are the primitive objects that were used to draw these particular vector graphic images. Unfortunately, it looks awful.
>
> I've tried saving the Matlab output in Illustrator format and then opening this file in illustrator, but the results are terrible - the image looks very blocky. Saving the Matlab output as a bitmap doesn't seem to work, either. The quality is too low.
>
> Is this just a data resolution problem? That is, should I try and get data that is better resolved before plotting this image? Any suggestions are very welcome!
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