r.cost with different starting values

GRASS GRASS user
1

Hi,

how can I run r.cost with different starting cost values assigned to each
starting point (40 points).

From input=

111
111
111
output(starting point)=
000
050
000
I want to get output=
666
656
666
instead of output=
111
101
111

Radim

2

Radim Blazek wrote:

Hi,

how can I run r.cost with different starting cost values assigned to each
starting point (40 points).

[...]

I want to get output=
666
656
666
instead of output=
111
101
111

The only way I see is to run r.cost for each starting point, and then
use r.mapcalc to add the desired constant. After that you should find
the minimal value from all resulting maps (r.mapcalc again).

This can be eased by a shell script (and the starting points in a file)

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