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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I don’t think this is possible.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You should postprocess the image in an Image Manipulation Program (e.g. `gimp`). However, you can automatize the procedure if you install the `Imagemagick`
toolset. It comes with the `convert` utility.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">On the command line, simply run
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Courier New";color:#1F497D">convert -transparent white in.png out.png<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Otherwise, you can try to use the
<a href="http://geuz.org/pipermail/gmsh/2014/008927.html">`pgf` output</a>, which does this internally (but only if `convert` is found).
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> gmsh [mailto:gmsh-bounces@ace20.montefiore.ulg.ac.be]
<b>On Behalf Of </b>Alexis PACHOLIK<br>
<b>Sent:</b> 23 June, 2014 16:45<br>
<b>To:</b> gmsh@geuz.org<br>
<b>Subject:</b> [Gmsh] Transparent background<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hello,<o:p></o:p></p>
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<p class="MsoNormal">I'd like to know if there is a way to have a transparent background when I save a .msh under a .png file. I went through the options, but even when I don't use General.Color.Background, my png has a white background.<o:p></o:p></p>
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<p class="MsoNormal">Have you any idea? <o:p></o:p></p>
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<p class="MsoNormal">Thanks a lot and best regards,<br clear="all">
<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Alexis<o:p></o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">Alexis PACHOLIK<o:p></o:p></p>
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<p>+33(0) 605 001 471<o:p></o:p></p>
<p><span style="font-size:10.0pt;color:#444444">2ème Année Cycle Ingénieur<br>
Option Calcul et Modélisation Scientifiques</span><span style="font-size:10.0pt"><br>
<b><i><span style="color:#444444">I</span></i></b><i><span style="color:#444444">nstitut <b>S</b>upérieur d'<b>I</b>nformatique, de <b>M</b>odélisation <br>
et de leurs <b>A</b>pplications<br>
</span></i><span style="color:#444444">University Blaise Pascal, Aubière, France</span></span><o:p></o:p></p>
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