Creating input node file for v.net.salesman in GRASS

Question

I have imported the line vector layer and point vector layer (12 points) to GRASS using v.in.ogr. Now I want to use v.in.salesman to find the shortest path between these 12 points, but I couldn't input anything in the "Input nodes" field.

Answer 1

As far as I know, before using v.net.salesman to get your route, you should connect your points layer to your network (line vector layer) using v.net op=connect [1] at nlayer=2

Once you connect your 12 points to your network as nodes, you'll be able to select your nodes layer from the "input nodes" dropdown menu.

• http://grass.osgeo.org/grass64/manuals/v.net.html

Answer 2

In my case, like @Taras explains, I had to make that step with "v.net" algorithm.

This my own question that I solved by myself and here I explains step by step how I solved my problem with "v.in.salesman" algorithm.

I hope it could be useful for you.