[GRASS-user] Length of a political boundary

[ambijat]

On 4/5/2011 1:08 PM, Hamish wrote:
> ambijat wrote:
>> No, Hamish,
>> This is not the case as I see it.
> ok, sorry if I misunderstood. how do you get a political boundary
> from SRTM data?
The answer to this is by first extracting the vector line (boundary 
line) then converting it to raster line and then finally by r.mapcalc 
substituting the values by corresponding cells. So, this was not a 
problem at all.

Aha! you have given me an idea about using r.slope.aspect let me see how 
I can work it out.

regards,
Ambrish