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Manage to solve my problem. THis can be done by instantiating OGR and openup a shapefile database, layers etc Afterwhich, create a OGRPoint object with the neccessary lat lon input OGRPoint* pt = new OGRPoint(lat, lon); set a spatial filter based on this point object on the layer next extract the feature based on the filter resu;lt Finally extract the ...


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The Python processing module of QGIS uses the module subprocess to launch directly the GRASS commands with the script GrassUtils.py (in /.../plugins/processing/algs/grass/GrassUtils.py): 1) First it creates a temporary batch file (grass_batch_job.sh or grass_batch_job.bat) in /.../.qgis2/processing/ with the command (def ...



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