Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a map of fracture distributions over an area and I would like to calculate the density distribution of fractures that intersect a moving window with a specified radius.

Is there a way to calculate this in QGIS, similar to the line density calculation in ArcGIS Spatial Analysis?


share|improve this question

Not in QGIS, but I can throw out two suggestions using other tools (thru QGIS plugins). The procedure in GRASS is to convert the line to points and run v.kernel on the points. The other (probably better) way is to import the line into R, load the spatstat package and use the density.psp() function.

Both tips were mentioned already on the grass-users maillist. HTH, Micha

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.