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I've been looking to see if there was a way to call Voronoi Polygons function found in Vector/Geometry Tools, directly from the code but I have not found one. Does this currently exist? Is there a way to call these functions within python coding?

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this code may help you github.com/qgis/Quantum-GIS/blob/master/python/plugins/fTools/… –  geogeek Apr 11 '13 at 22:59
    
Hmm, the code does offer some insight. However, what needs to be imported so the in-built functions like computeVoronoiDiagram() can be used? –  NothingToSay Apr 12 '13 at 0:28
    
sorry i have never used this script, i've found it just by googling for you. –  geogeek Apr 12 '13 at 0:32
    
Oh alright, thanks for the help. I'll tinker with it see if there is a way to make it work. –  NothingToSay Apr 12 '13 at 0:40
    
cant you use the processing tool? i.e. grass:v.voronoi and qgis:voronoipolygons –  BJEBN Oct 1 '13 at 15:32

1 Answer 1

BJEBN has suggested a function from the processing toolbox. Here's how to use it: As per http://qgis.org/de/docs/user_manual/processing/console.html

From the console you can get a list of all the algorithms available which contain the word "Voronoi" by typing:

import processing
processing.alglist("Voronoi")

Then you could find out how to use what appears the most appropriate function with:

processing.alghelp("qgis:voronoipolygons")

Then simply use the algorithm in your script as follows:

processing.runalg("qgis:voronoipolygons",inputlayer,"output_file.shp")
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