Hi Nyall, > No - neither SAGA nor GRASS have any concept of QGIS memory layers. > You need to give them a disk-based file path to save their outputs to.
ok, clear now why this was not working > If you use a memory layer as an input to these algs it will also have > to save it out to a disk based format, but this is done automatically > by saving to a file in the temp folder. We could potentially do the > same thing to allow SAGA/GRASS algs to output to a memory layer by > first saving the output to a shp in the temp folder, then loading that > file and copying the features to a memory layer. But it would be > rather inefficient and counter productive - you're still being forced > to loop over the disk-based format, so you're just adding extra > processing for little gain. so within a script (or a Processing plugin) both input layer and output one have to come from a disk saved file. Thanks for the explanation! Cheers Matteo _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
