I have never run a processing model standalone, so I cannot help there. I don't know how closely tied this is to GUI related things. It may or may not work without X. But if you have to create a QgsApplication which is a QApplication I am pretty sure that you need to have some kind of X running. So it would be a matter of getting processing to run without QgsApplication. How does hadoop-mapreduce work? Is it not possible to spawn one separate xvfb-run process per map?
On 12/10/2014 08:58 PM, devquestio...@gmail.com wrote: > 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 _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer