<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div>Hi list,<br></div><div><br data-mce-bogus="1"></div><div>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).<br data-mce-bogus="1"></div><div>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...<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>When i generate the shape grid, i notice that proj 4 consider the unit as degrees and not as grad !<br></div><div>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)<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Do proj 4 understand only degree coordinates ?<br data-mce-bogus="1"></div><div>i try to make a personnal SRID but no success...<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>Thanks if you have any tip...<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>So long,<br data-mce-bogus="1"></div><div>Julien<br data-mce-bogus="1"></div><div data-marker="__SIG_PRE__"><hr>
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<td style="font-family: arial; font-size: 10pt"><b>Julien-Pierre GUILLOUX</b><br><br>
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04 92 40 20 56 / 06 99 77 38 26<br>
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