[GRASS-user] computation in a location based on infos from another location

[Achim Kisseler]

Hi,

> use r.to.vect to map every cell to a polygon, project it to the lambert 
> map, do the calculation on the polygon, reproject it back to the 
you dont need to project it to lambert:

just run v.to.db -p option=area map=...

then you get the size for every lines cell.

To get the raster-map:
r.mapcalc "ns_col=if(col()==1 , row() , null())"

Achim