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I'm using Mathematicato produce some of my graphics (when i'm not able to just TikZ them easily). All these images are availabvle as .eps and .pnghaving the same file name - let's use img.eps / img.png in the following.

I would like to set a preference for graphicx to use only one type, i.e. using

\includegraphics[width=.6\textwitdh]{img}

I would like to specify, which img to use with one switch, (package) option or variable.

I tried

\DeclareGraphicsExtension{.eps}

to restrict the allowed image extension to .eps, but still the .png file is included. It seems, .pngis preferred over .eps.

Though this is of course restricted to XeTeX it might be interesting for others, if you use .png together with some lossy format like .jpg to have a file extension preference.

Is there a package option for that or an easy command (global document option) for that?

To provide an MWE is - I think - difficult, because it would be necessary to provide at least 3 files.

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At least if you have all images available in both formats \RemoveGraphicsExtension from grfext does the job. By removing the unwanted extension. Though, if one of all your images is available only in one format - a preference would be necessary (removing the extension disables to use that specific image). –  Ronny Jan 1 '13 at 20:52
    
\DeclareGraphicsExtensions{.eps} (note s at end of command name) would make LaTeX only handle .eps explicitly, in particular it should only ever add a .eps extension. (other file types may be handled if their extension is explicit) –  David Carlisle Jan 1 '13 at 21:47
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"to TikZ something" sounds quite cool. :-) –  Christian Feuersänger Jan 1 '13 at 21:53
    
@DavidCarlisle oh, that works quite nice, if you don't mind you just can turn that into an answer, i don't know, why i didn't get that idea, but i haven't found the documentation for those commands... Christian - yeah. I noticed when I typed that, it really does. –  Ronny Jan 1 '13 at 21:58

1 Answer 1

up vote 6 down vote accepted

\DeclareGraphicsExtensions{.eps} (note s at end of command name) would make LaTeX only handle .eps explicitly, in particular it should only ever add a .eps extension. (other file types may be handled if their extension is explicit)

The version without an s presumably gave an error when you tried it? (It's best not to ignore error messages:-)

Further documentation on these commands is in the document grfguide, part of the core LaTeX distribution. (texdoc grfguide might work depending on your TeX distribution)

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Actually in my efforts to construct this topic i might also have misstyped it, but my i'm not sure anymore. It didn't work in the first tries I did (in the meaning that in didn't exclude .png) - The hint to use grfguide is great. –  Ronny Jan 1 '13 at 22:10
    
Though, then, no png is accepted and everything has to be .eps - but okay, I haven't seen anything to specify a preference, and can work with eps-only, even if a preference would be nice (for lazy graphics or things that are only in one of the formats). –  Ronny Jan 1 '13 at 22:58
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If you want a preference use {.eps,.png} as the argument, the extensions are just tried in order –  David Carlisle Jan 1 '13 at 23:03
    
Oh :) Maybe I'm already a little bit tired, so I was a little slow to notice that. It work's great :) –  Ronny Jan 1 '13 at 23:17

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