[GRASS-user] error with v.net.salesman

[Markus Neteler]

Hi José,

On Wed, Dec 31, 2008 at 8:39 AM, José María Michia
<jose.maria.michia at gmail.com> wrote:
> Hello everyone. I'm trying v.net.salesman module. I followed the
> instructions in the manual page. All tests are good, except one case,
> which returns the following error:
>
>> v.net.salesman myroads_net ccats=1-237 out=mysalesman2
> Number of cities: [237]
> Building graph...
> Registering arcs...
>  100%
> Flattening the graph...
> Graph was built
> ERROR: Destination node [604] is unreachable from node [1045]
>
> The range 1-237 refers to all nodes in the network.
>
> I can not find a way of relate [604] and [1045] with categories.

Are you using the Spearfish data set?

I have replicated the example of the man page without problems.
Additionally, I have tried yours:

GRASS 6.4.svn (spearfish60):~ > v.net.salesman myroads_net ccats=1-237
out=mysalesman2
Number of cities: [6]
Building graph...
Registering arcs...
 100%
Flattening the graph...
Graph was built

Cycle:
Arcs' categories (layer 1, 107 arcs):
4,4,4,4,4,4,5,5,4,2,2,4,4,4,5,5,5,5,5,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,2,2,2,2,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,4,4,4,4,4,4,4,4,4,4,2,2,2,4,4,2,2,2,2,2,2,2,2,5,5,5,5,4,4,4,4,4,4,4,4,4,4,4,4,4

Nodes' categories (layer 2, 107 nodes):
2,1,6,5,4,3

Building topology for vector map <mysalesman2>...
Registering primitives...
113 primitives registered
872 vertices registered
Building areas...
 100%
0 areas built
0 isles built
Attaching islands...
Attaching centroids...
 100%
Number of nodes: 107
Number of primitives: 113
Number of points: 6
Number of lines: 107
Number of boundaries: 0
Number of centroids: 0
Number of areas: 0
Number of isles: 0

-> no problem.

Question: Which GRASS version are you using, whih operating system?

I am using 6.4.0RC1 here.

Markus