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From: Dan Jones on 22 Apr 2010 12:55
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!
From: Oliver Woodford on 22 Apr 2010 18:34
"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!

Try to produce publication quality bitmaps direct from Matlab using export_fig from the FEX.
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