nviz_cmd.exe stops working in Grass6.5 and does not create the image - is this a known issue?
Also, in Grass 7.0, here is what I get:
GRASS 7.0.svn> nviz_cmd out0 color_map=out0 out=out0 zexag=0.00140 height=141.8
0 position=0.464,0.68 resolution_fine=1 resolution_coarse=1 persp=40 format=tif
size=500,500
Loading raster map out0@FORT63…
100%
Loading raster map out0@FORT63…
100%
Translating colors from raster map out0@FORT63…
100%
ERROR: G_malloc: unable to allocate 3659235904 bytes of memory at
gsd_prim.c:913
GRASS 7.0.svn>
regions are set to my raster file in both cases - changing the region (zoom in or out) does not change the bytes of memory needed in GRASS7.0 case.
···
–
M.Onur Kurum
Graduate Research Assistant
Dept. of Civil, Construction, and Environmental Engineering
North Carolina State University
Campus Box 7908
2501 Stinson Drive, 428 Mann Hall
Raleigh, NC 27695-7908
Office: (919) 515-1340
Mobile: (919) 200-0665
Email: mokurum@ncsu.edu
Email: m.onur.kurum@gmail.com
On Thu, Oct 21, 2010 at 11:12 PM, M.Onur Kurum <mokurum@ncsu.edu> wrote:
nviz_cmd.exe stops working in Grass6.5 and does not create the image - is this a known issue?
....
see below...
Also, in Grass 7.0, here is what I get:
GRASS 7.0.svn> nviz_cmd out0 color_map=out0 out=out0 zexag=0.00140 height=141.8
0 position=0.464,0.68 resolution_fine=1 resolution_coarse=1 persp=40 format=tif
size=500,500
Loading raster map <out0@FORT63>...
100%
Loading raster map <out0@FORT63>...
100%
Translating colors from raster map <out0@FORT63>...
100%
ERROR: G_malloc: unable to allocate 3659235904 bytes of memory at
gsd_prim.c:913
It tries to allocate 3.4GB of RAM. Does the machine offer this?
GRASS 7.0.svn>
regions are set to my raster file in both cases - changing the region (zoom in or out) does not change the bytes of memory needed in GRASS7.0 case.
It depends on the resolution. You may need to decrease the resolution
with g.region
to make stuff fit into the memory of your computer. Remember that also
the operating
system consumes memory (the GRASS overhead is pretty low).
cheers
Markus
the machine has only 4GB Ram but I don’t think that’s the issue
GRASS 7.0.svn> g.region -p
projection: 99 (Lambert Conformal Conic)
zone: 0
datum: nad83
ellipsoid: a=6378137 es=0.006694380022900787
north: 250670
south: 249730
west: 913366
east: 914342
nsres: 5
ewres: 5.00512821
rows: 188
cols: 195
cells: 36660
GRASS 7.0.svn>
this is the region after I changed to 5m resolution - previously it was at 1m. It is not a big region. I also tried changing the resolutions in the nviz_command - the error message is the same. So, changing the resolution, setting a smaller region, trying with another DEM does not change the error.
GRASS 7.0.svn> nviz_cmd NH_1999_1m zexag=3.5 height=1000 position=0.50,0.9 resolution_fine=5 resolution_coarse=5 persp=10 out=NH_1999def format=tif size=500,500 --o
Loading raster map <NH_1999_1m@NagsHead_series>…
100%
Loading raster map <NH_1999_1m@NagsHead_series>…
100%
Translating colors from raster map <NH_1999_1m@NagsHead_series>…
100%
ERROR: G_malloc: unable to allocate 3659235904 bytes of memory at
gsd_prim.c:913
···
–
M.Onur Kurum
Graduate Research Assistant
Dept. of Civil, Construction, and Environmental Engineering
North Carolina State University
Campus Box 7908
2501 Stinson Drive, 428 Mann Hall
Raleigh, NC 27695-7908
Office: (919) 515-1340
Mobile: (919) 200-0665
Email: mokurum@ncsu.edu
Email: m.onur.kurum@gmail.com