Run processing (GRASS) algorithm as administrator

Question

I am trying to use GRASS algorithms in a plugin of mine, in order to improve the quality of a shapefile containing lines that will be used as a graph later. The first algorithm I want to use is the one that breaks the lines at their intersections : v.clean.break.

path_to_broken_lines = processing.runalg(
 "grass:v.clean", #Algorithm name
 input, #Path to the layer to break
 0, #Tool (0<=>break)
 0, #Threshold (not needed for this algorithm)
 "%f , %f, %f, %f "% (xmin , xmax , ymin , ymax), #GRASS_REGION_PARAMETER <ParameterExtent>
 -1, #GRASS_SNAP_TOLERANCE_PARAMETER <ParameterNumber>
 0, #GRASS_MIN_AREA_PARAMETER <ParameterNumber>
 None, #Errors file (None <=> temporary file)
 None) #Output file path (None <=> temporary file)

Now, despite being the admin of my computer, I get an error saying that my company's policy is blocking the execution of the algorithm. Still, I can execute them manually by running the GRASS plugin, importing my file into grass (v.in.ogr) and using the algorithm afterwards, but it seems like I can't automate it.

My question is the following : is there a way to use "processing.runalg()" as admin ? I have found ways to execute shell scripts as an admin but it is not really the same problem, is it. The plugin would work if I launched QGIS as an administrator, but I do not really want to force the end users to launch QGIS as an admin just to be able to run a plugin they won't use daily.

Answer 1

Have you tried processing.runandload() ?

I'm using that when I run a grass:v.voronoi function and that works fine.

• Ril8772: I've just tried it, unfortunately it doesn't work. It is the same error. I wonder how I can use the algorithm manually, but get blocked when trying to automate it, it makes no sense. :(