[GRASSLIST:9866] Re: r.cost and distance to nearest feature

[Māris Nartišs]

Hi,

1) submit this as wish list item at
http://grass.itc.it/bugtracking/bugreport.html (I know, that interface
sucks and bugzilla is better, but currently we have no bugzilla);
2) nearest feature in raster or vector map?
If it is raster map, may bee You can write such module Yourself. I was
surprised, that knowledge from "teachyourself C in 24h" is enough to
code new simple raster module for GRASS. And more - first You can
implement it in mapcalc - it not as hard as it sounds :)

Let the source be with you!
Maris.

2006/1/16, Jesse Whittington <jesse.whittington at lycos.com>:
> When I run r.cost, I frequently receive an error saying that there is not enough memory.  After searching the mail archives I tried increasing my resolution four-fold, partitioning my grids with large overlapping boundaries, and adding the arguement percent_memory=100 with mixed success.  Consequently, it's easier for me to export my data and calculate distance to nearest feature in ArcInfo workstation.
>
> I realize that there are a limited number of developers, but I'm sending this message as a request for what might be a simpler algorythm than r.cost to produce:
>     - distance to nearest feature
>     - attribute of nearest feature
>     - direction to nearest feature
>
> Otherwise, I think GRASS is a GREAT program,
> Jesse
>
>
>
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