Re: [gdal-dev] Othogonal projcetion

2013-05-06 Thread MARION VIOLOT
Dear everyone, I found sometehing a way more easy that I could use. It's the method Distance(). Apparently, " if OGR is built without the GEOS library, this method will always fail, issuing a CPLE_NotSupported error ". I guess if it returns me -1 means that it was built with GEOS, but an error occ

[gdal-dev] Othogonal projcetion

2013-05-06 Thread MARION VIOLOT
Dear everyone, I am new with GDAL-OGR and only need to orthogonally project points on polyline and then calculate the distance from the projections and the start point of the polyline (in C++, in a Windows Form Application with Visual Studio 2008). I didn't find yet a developed method in GDAL-OGR