[GRASS-user] r.cost source ID question...

[Hamish]

Jonathan Greenberg wrote:
> If I have a r.cost surface calculated from a set of vector points
> used as starting points, and some cost surface, is there any way to
> easily retrieve the SOURCE vector ID that leads to the lowest cost
> to get to any cell in the raster?  E.g. from a given point, where
> is the point that costs the least to get to?

It sounds a bit like an inverted topographic prominence problem.
  http://article.gmane.org/gmane.comp.gis.grass.user/19467/

As Dylan wrote, r.drain should help find the path to the nearest pit.
Other water flow modules may help too.


Hamish



      ____________________________________________________________________________________
Looking for last minute shopping deals?  
Find them fast with Yahoo! Search.  http://tools.search.yahoo.com/newsearch/category.php?category=shopping