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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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@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
--
_______________________________________________
Search for businesses by name, location, or phone number. -Lycos Yellow Pages
http://r.lycos.com/r/yp_emailfooter/http://yellowpages.lycos.com/default.asp?SRC=lycos10
Hi,
what about r.distance and maybe m.cogo?
M
On Tue, Jan 17, 2006 at 10:10:52AM +0200, M?ris Narti?s wrote:
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@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
>