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If you read QGIS: 17.8. Running an external algorithm: Instead, you must install SAGA and make sure that the SAGA folder is in PATH, so it can be called from the console (just open a console and type saga_cmd to check it) It is for Linux, but it is the same for Mac OS X: can you use saga_cmd in the terminal ? . If not, you need to fix your PATH ...


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That solved my problem. Further information and a tutorial can be found here http://gdal.org/1.11/ogr/ogr_apitut.html A C++ version for GDAL 1.11: #include <GDAL/ogrsf_frmts.h> int main() { OGRRegisterAll(); OGRDataSource *poDS; poDS = OGRSFDriverRegistrar::Open( "data.shp", FALSE); }


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If you look at this and this, they say that both GDALOpenEx() and GDAL_OF_VECTORS were (will be?) introduced in GDAL 2.0. GDAL 2.0 seems to be still under development. In case that you are able to compile it, you can find the source code here. In older versions you would use OGROpen to read a Shapefile.


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=== Work on My Mac === I hope this can solve your problem to. The problem because Qgis Connect with TCP / IP protocol, refer to this link : http://hub.qgis.org/issues/735 QGIS uses tcp/ip connections to PostgreSQL, regardless of whether both client and server are on the same host. You can configure PostgreSQL to accept such connections as trusted, however ...


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Matplotlib has many backends In my Mac OS X matplotlib (1.4.2) installation, using the pure Python script in List of all available matplotlib backends the result is: print backends ['agg', 'cairo', 'cocoaagg', 'gdk', 'gtk', 'gtk3', 'gtk3agg', 'gtk3cairo', 'gtkagg', 'gtkcairo', 'macosx', 'mixed', 'nbagg', 'pdf', 'pgf', 'ps', 'qt4', 'qt4agg', 'qt5', ...



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