@hamish, altready try all of these stuff, i'll try with the subtraction, i hope in that solution!<br><br>anyway, after one week of trial my thought is:<br><br>the problem can be:<br>the way that use v.to.db takes the length, how it measure? where it cut a line in the intersection and so on<br>
the way that use v.net.path to assign automatically weight (it takes the length, but how?)<br><br>where i can found the code of v.net.path ?<br><br>someone of you has a map that are sure to work with v.net.path with weight (maybe is my map that is malformed, too much lines ar attached an so on)<br>
<br>doesn't exists a method to tell at v.net.path: takes the weight and multiplies it by the length that you normally calculate?<br><br>thanks<br><br><br>-- <br>Stefano<br>