Re: [GRASS-user] r.watershed error

2010-05-25 Thread Markus Metz
Kurt Springs wrote: > Thanks Markus, > > Let me make sure I understand.  For best results I need to set the resolution > to 10m for the 1/3 arcsec. That's not enough, the current computational region must be aligned to the dem, otherwise you might have the same resolution, but the computational g

Re: [GRASS-user] r.watershed error

2010-05-25 Thread Markus Metz
Oops, > > Recommended reading: > http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html > here the first part explaining the computational region > > and the g.region manual > http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html http://grass.osgeo.org/grass64/manuals/h

Re: [GRASS-user] r.watershed error

2010-05-24 Thread Kurt Springs
Thanks Markus, Let me make sure I understand. For best results I need to set the resolution to 10m for the 1/3 arcsec. With the region set as it is (most of Northern New England) when I do this I run out of memory. To over come this, I can set the region to just encompass just the NED13_01 s

Re: [GRASS-user] r.watershed error

2010-05-24 Thread Markus Metz
On Sun, May 23, 2010 at 8:10 PM, Kurt Springs wrote: > Problem was the resolution it starts working when I set it to 100m.  The dem > is ~69 x 27 km. Apparently, the dem has a resolution of 1/3 arcsec (~10m), maybe reprojected and resampled. With these extends, there would be about 186 million ce

Re: [GRASS-user] r.watershed error

2010-05-23 Thread Glynn Clements
Rich Shepard wrote: > > ERROR: G_malloc: unable to allocate 18446744070980740804 bytes at ... > > > Any idea what I'm doing wrong? > > Kurt, > >Look at the amount of memory your file wants to be allocated: several > Petabytes. How

Re: [GRASS-user] r.watershed error

2010-05-23 Thread Kurt Springs
Problem was the resolution it starts working when I set it to 100m. The dem is ~69 x 27 km. Thanks On May 23, 2010, at 12:00 PM, Rich Shepard wrote: > > > On Sat, 22 May 2010, Kurt Springs wrote: > >> ERROR: G_malloc: unable to allocate 18446744070980740804 bytes at ... >

Re: [GRASS-user] r.watershed error

2010-05-22 Thread Rich Shepard
On Sat, 22 May 2010, Kurt Springs wrote: ERROR: G_malloc: unable to allocate 18446744070980740804 bytes at ... Any idea what I'm doing wrong? Kurt, Look at the amount of memory your file wants to be allocated: several Petabytes. H

[GRASS-user] r.watershed error

2010-05-22 Thread Kurt Springs
Hi all, I am trying to run r.watershed using a dem I converted from a USGS Seamless server 1/3 arc map. This is what I get: GRASS 6.4.0RC6 (NH):~ > r.watershed elevation=ned13...@permanent threshold=10 max.slope.length=10 accumulation=acc13_01 drainage=drain13_01 basin=basin13_01 stream=strea