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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Julien,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Yes, PROJ 4 only understands degrees and radians (depending on how you interface with PROJ). However, PROJ 6 is also capable
of understanding gradians. QGIS 3.8 is properly compatible with PROJ 6 so look out for that when it lands.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">/Kristian<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Fra:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Qgis-user <qgis-user-bounces@lists.osgeo.org>
<b>På vegne af </b>Julien Guilloux<br>
<b>Sendt:</b> 14. juni 2019 13:04<br>
<b>Til:</b> qgis-user <qgis-user@lists.osgeo.org><br>
<b>Emne:</b> [Qgis-user] proj 4 use degrees instead of grad<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Hi list,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">I would like to generate a polygon grid. The coordinate system i need is the old French NTF (with grad unit and Paris as first meridian).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">No trouble, there is the espsg code: 4807. When looking description of 4807 in spatialrefsys, grad as unit are well indicate. So... all seem perfect.... but...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">When i generate the shape grid, i notice that proj 4 consider the unit as degrees and not as grad !<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">That why the location of my generate shape is not good, with a difference exactly egal to a 0.9 factor (a circle in grad is 400g, a circle in degrees is 360°, so 1 grad = 0.9 degree)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Do proj 4 understand only degree coordinates ?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">i try to make a personnal SRID but no success...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Thanks if you have any tip...<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">So long,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Julien<o:p></o:p></span></p>
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<p class="MsoNormal"> <span style="border:solid windowtext 1.0pt;padding:0cm"><img width="100" height="100" style="width:1.0416in;height:1.0416in" id="_x0000_i1027" src="cid:~WRD000.jpg" alt="Billede fjernet af afsender."></span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Julien-Pierre GUILLOUX</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
<br>
<b><span style="color:#999999">Parc national des Écrins</span></b><span style="color:#999999"><br>
04 92 40 20 56 / 06 99 77 38 26<br>
<a href="http://www.ecrins-parcnational.fr/" target="_blank"><span style="color:#999999;text-decoration:none">www.ecrins-parcnational.fr</span></a>
</span><o:p></o:p></span></p>
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