<!DOCTYPE html><html><head><title></title><style type="text/css">p.MsoNormal,p.MsoNoSpacing{margin:0}</style></head><body><div>I think `WITH_GIF` is only used to read in GIF images (for symbols etc.)?<br></div><div><br></div><div>As Even wrote GDAL/GIF doesn't seem to work as an OUTPUTFORMAT. I get:<br></div><div><br></div><div><span style="color:rgb(0, 0, 0);font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;-webkit-text-stroke-width:0px;white-space:normal;text-decoration-thickness:initial;text-decoration-style:initial;text-decoration-color:initial;display:inline !important;float:none;"><span class="font" style="font-family:monospace;"><span class="size" style="font-size:13px;">msDrawMap(): Image handling error. Failed to draw layer named 'countries'. msOGRFileNextShape(): OGR error. OGR GetNextFeature() error'd. Check logs</span></span></span><br></div><div><span style="color:rgb(0, 0, 0);font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;word-spacing:0px;-webkit-text-stroke-width:0px;white-space:normal;text-decoration-thickness:initial;text-decoration-style:initial;text-decoration-color:initial;display:inline !important;float:none;"><span class="font" style="font-family:monospace;"><span class="size" style="font-size:13px;"></span></span></span><br></div><div><br></div><div id="sig62266145"><div class="signature">--<br></div><div class="signature">web:<a href="https://geographika.net">https://geographika.net</a> & <a href="https://mapserverstudio.net">https://mapserverstudio.net</a><br></div><div class="signature">twitter: @geographika<br></div></div><div><br></div><div>On Fri, Sep 8, 2023, at 2:43 PM, Even Rouault wrote:<br></div><blockquote type="cite" id="qt" style=""><p>Philippe,<br></p><div class="qt-moz-cite-prefix">Le 08/09/2023 à 14:16, Philippe
Ghesquiere via MapServer-dev a écrit :<br></div><blockquote type="cite" cite="mid:CAAes_OF6=rEzXh3CWW3TM74ROXHrSa31inF+=7+69GUwNq-0_Q@mail.gmail.com"><div dir="ltr"><div>Hi all,<br></div><div>I am a little bit confused with GIF support for WMS/WMTS
services.<br></div><div>In several parts of the documentation, it is mentioned that
GIF support is discarded with the end of the "GD library"
support.<br></div><div><br></div><div>I noticed the compilation option in CMakelists.txt :<br></div><div>option(WITH_GIF "Enable GIF support (for PIXMAP loading)"
ON)<br></div><div>I do not understand the "for PIXMAP loading" comment.<br></div><div><br></div><div>Anyway, our mapserver does not server WMS/WMTS tiles in GIF
format.<br></div><div><br></div><div>So here are my few questions :<br></div><div><ul><li>is GIF support enabled by default for WMS/WMTS services
?<br></li></ul></div></div></blockquote><div>no<br></div><blockquote type="cite" cite="mid:CAAes_OF6=rEzXh3CWW3TM74ROXHrSa31inF+=7+69GUwNq-0_Q@mail.gmail.com"><div dir="ltr"><div><ul><li>do I need to add the option : -DWITH_GIF=ON for cmake
configuration ?<br></li></ul></div></div></blockquote><div>only to load raster symbols in GIF format<br></div><blockquote type="cite" cite="mid:CAAes_OF6=rEzXh3CWW3TM74ROXHrSa31inF+=7+69GUwNq-0_Q@mail.gmail.com"><div dir="ltr"><div><ul><li><div>do I need to add a specific mapserver configuration,
like :<br></div><div> OUTPUTFORMAT<br></div><div> NAME "GIF"<br></div><div> DRIVER GDAL/GIF<br></div><div> MIMETYPE "image/GIF"<br></div><div> IMAGEMODE RGB<br></div><div> EXTENSION "gif"<br></div><div> END<br></div></li></ul></div></div></blockquote><p>I don't think that will work. The GDAL GIF driver already expects
paletted data, not RGB. And I don't think switching IMAGEMODE to
PC256 would work since that support has effectively gone.<br></p><p>I believe the only option to get paletted data is to use PNG8
with the AGG/PNG8 driver and MIMETYPE="image/png; mode=8bit"<br></p><p>Even<br></p><p><br></p><blockquote type="cite" cite="mid:CAAes_OF6=rEzXh3CWW3TM74ROXHrSa31inF+=7+69GUwNq-0_Q@mail.gmail.com"><div dir="ltr"><div><div>Thanks for your help and advices<br></div></div><div>Philippe<br></div><div><br></div></div><div><span>The information in this e-mail is
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My software is free, but my time generally not.<br></pre><div>_______________________________________________<br></div><div>MapServer-dev mailing list<br></div><div><a href="mailto:MapServer-dev@lists.osgeo.org">MapServer-dev@lists.osgeo.org</a><br></div><div><a href="https://lists.osgeo.org/mailman/listinfo/mapserver-dev">https://lists.osgeo.org/mailman/listinfo/mapserver-dev</a><br></div><div><br></div></blockquote><div><br></div></body></html>