If abcolumn is not given then then the same costs are used for forward and backward arcs.
Contrary to other v.net.* modules, v.net.allpairs does not allow to use arcs and nodes from separate layers. This means that you have to put both types of features into the same layer, but with distinct category numbers in order to allow accessing specific nodes only. See the example below.
#check cat values in arcs layer (streets_wake here): v.category streets_wake op=report #take the existing cat values of the points in schools_wake and add 50000 (because the cat values in streets_wake go up to just under 50000) v.category schools_wake out=schools op=sum cat=50000 #now link the nodes with their new categories to the arcs, with node category values in layer 1 v.net streets_wake points=schools op=connect thresh=200 out=network nlayer=1 #then launch your analysis indicating the cat values of the points which you want to use v.net.allpairs network cats=50000-50167 out=allpairs #get distance matrix v.db.select allpairs
Last changed: $Date$