thanks Matthias, Actually this is what i am trying to do.
i need to calculate wetness index, so i have developed a model in qgis graphical modeler that invokes grss-saga algorithsm to calculate slope, wetness index etc. all i want to do is to run that algorithm in a headless mode. So, using processing model is the only way here or there are any other approaches ? using xvfb-run is an option, but it will complicate something else i.e i want then invoke the scripts via hadoop-mapreduce for parallel execution. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Error-cannot-connect-to-X-server-on-Ubuntu-tp5177029p5177316.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer