[GRASS-dev] v.net.distance/path calculate the route in the reverse way

[Moritz Lennert]

On 24/02/16 01:53, Pedro Venâncio wrote:
> Hi Moritz,
>
> Thank you for your test!
>
> Can you try to run v.net.distance with the same sample data?
>
> v.net.distance --overwrite input=mynet at PERMANENT
> output=distance_7779_7780 from_layer=2 from_cats=7779 to_layer=2
> to_cats=7780 arc_column=FT_COST arc_backward_column=TF_COST
>
> v.net.distance --overwrite input=mynet at PERMANENT
> output=distance_7780_7779 from_layer=2 from_cats=7780 to_layer=2
> to_cats=7779 arc_column=FT_COST arc_backward_column=TF_COST
>
> In the image attached, green line is the result of the first run
> (from_layer=2 from_cats=7779 to_layer=2 to_cats=7780), and red line is
> the result of (from_layer=2 from_cats=7780 to_layer=2 to_cats=7779).
>
> It seems that it calculates the route in the reverse way. What do you think?

I confirm. I've created a bug report: 
https://trac.osgeo.org/grass/ticket/2936.

Moritz