0

Problem

I would like to get the visibility of one point in regard to a polygon layer. E.g. which island can I see from the beach.

What I found

It's possible to get a visibility graph via Grass v.net.visibility

Example with my point positioned in 153.7555071186,-29.4628297567 and a polygon layer:

processing.runalg("grass7:v.net.visibility","dbname='/boundaries' table='polygons' (geometry) sql=","153.7555071186,-29.4628297567 ",None,"153.755505814,153.755511741,-29.4628313855,-29.4628273853",-1,0.0001,0,"/visibility.shp")

enter image description here

The result is a visibility graph of every polygon (green lines) + my point (blue lines).

Issue

Is it possible to only perform the visibility graph for one point (get only the blue lines)?

I don't know if we can change the behavior of v.net.visibility there is no particular indication in the documentation, or perhaps can I use another tool?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.