[GRASS-user] Cell limitation for raster maps; Out of memory
JHartert
la3063 at fh-weihenstephan.de
Fri Sep 19 07:19:21 EDT 2008
Hello Grass Users!
My question concerns the water modules: r.flow, r.watershed, r.terraflow,...
etc.
But it's also interesting for other modules
The rastermap from which I'm running the analysis modules has the following
r.info:
|
| Type of Map: raster Number of Categories: 453
|
| Data Type: CELL
|
| Rows: 3996
|
| Columns: 6936
|
| Total Cells: 27716256
|
| Projection: Transverse Mercator (zone 0)
|
| N: 5380887 S: 5372895 Res: 2
|
| E: 4514163 W: 4500291 Res: 2
|
| Range of data: min = 378 max = 453
|
--> Error: Out of memory
My question is: Is there a generell limitation of total raster cells?
Because only on raster maps with lower resolution and less than 2000x2000
(4mio) cells
the water-modules and other analysis tools work.
I'm using Grass 6.2.2 on Ubuntu 8.04 (hardy) with 2.6.24-19-server Kernel,
so I can use with this Kernel 8GB Memory. Processor: Dual AMD Opteron
Processor 252
Thanks a lot for any advices!
Best regards
--
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