Hi,
I’m using OSR (on GDAL 1.6.1) bindings in C# to project points,
and I have problem with the projection "+init=IGNF:LAMBE
+wktext" to "+init=IGNF:LAMB93"
At the first execution, I have one result
and on all the others I have another results.
An exemple :
SpatialReference _srin = null;
SpatialReference _srout = null;
CoordinateTransformation _ct = null;
double[] x, y;
_srin
= new SpatialReference("");
_srin.ImportFromProj4("+init=IGNF:LAMBE
+wktext");
_srout = new SpatialReference("");
_srout.ImportFromProj4("+init=IGNF:LAMB93");
_ct = new CoordinateTransformation(_srin,
_srout);
x = new double[]
{ 540000 };
y = new double[]
{ 1820000 };
_ct.TransformPoints(1, x, y, null);
Console.WriteLine(x[0] + " - " + y[0]);
// Return : 586336,591390395 - 6254404,95793043
x = new double[]
{ 540000 };
y = new double[]
{ 1820000 };
_ct.TransformPoints(1,
x, y, null);
Console.WriteLine(x[0] + " - " + y[0]);
//Return : 586281,605619939 - 6254404,35662961
_ct.Dispose();
_srin.Dispose();
_srout.Dispose();
Thanks
for your Help.
Jean michel
Pierret
