[GRASS-user] river profile, how to

[ambijat]

Hi All,
I wish to develop a river profile from start point to its last. The 
GRASS 6.4.1 has a tool profile analysis, which is a bit crude. If I take 
two points, eg. river head and its last point then it gives a profile, 
but it is a direct and not along the course of the river. And, if I 
create a series of point all along the course, then certainly not the 
best values are there as selection process is very tedious. So, is there 
a method which would automatically take the raster values of the river 
course seen as a line and give a simple fine river profile.

Thanks

Ambrish Dhaka