qgis processing not add layer

Question

I'm currently writing a python plugin where I would like user with 0 experience of GIS to use QGIS to view data geographically anyhow,

I'm running two processing functions:

import processing
processing.runandload('qgis:reprojectlayer', str(self.input_file_path) + "shapefiles/temp.shp",'EPSG:4326', file_name + '.shp')
processing.runandload("grass:v.voronoi", file_name+".shp",False, True, extent, -1, 0, 3, file_name_poly)

Both of them are adding the new layer in qgis "Layers Panel", can I turn this off? (and just saving the files in the selected path). Now I got one layer called Reprojected and one called Voronoi Polygons in the Layer Panel.

Answer 1

You can replace the runandload function with runalg if you don't want the output to be shown. So your code will look like:

import processing
processing.runalg('qgis:reprojectlayer', str(self.input_file_path) + "shapefiles/temp.shp",'EPSG:4326', file_name + '.shp')
processing.runalg("grass:v.voronoi", file_name+".shp",False, True, extent, -1, 0, 3, file_name_poly)