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Could also be that Latex is using the low-quality bitmap preview
rather than the EPS itself.
EPS should not be converted to a bitmap when generating a PDF.
On Fri, Jul 22, 2016 at 12:02 PM, Monique Semp
<monique -dot- semp -at- earthlink -dot- net> wrote:
>> Have you tried Visio > PDF > Illustrator > EPS?
>
>
> Yes, I've tried it, with not spectacular results. Even when I use the
> HighQualityPrint PDF joboptions, and even if I improve on them by
> configuring the joboptions for Maximum image quality with no compression,
> when I use Illustrator to Save As EPS, I get a warning that "The Document
> Raster Effects resolution is 72 ppi or less". And the resulting EPS looks
> rather blurry in the Doxygen->LaTeX->TeXworks final resultant PDF.
>
> But it is quite probable that the final result has nothing to do with the
> EPS image, but with whatever settings that MiKTeX/TeXworks uses for creating
> the PDF (presumably a .joboptions file). So that's the next thing to
> investigate.
>
> (I say this because the final PDF looks the same regardless of whether the
> EPS image is 100 KB, 860 KB, or even 1553 KBâthis last size was the result
> of my custom maximum image quality .joboptions that I used when printing the
> Visio file to a PDF.)
>
> -Monique
>
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