[GRASS-dev] [GRASS GIS] #1429: r.watershed large grids

[GRASS GIS]

#1429: r.watershed large grids
--------------------------+--------------------------------------
  Reporter:  dnewcomb     |      Owner:  grass-dev@…
      Type:  enhancement  |     Status:  closed
  Priority:  normal       |  Milestone:  7.0.0
 Component:  Raster       |    Version:  svn-trunk
Resolution:  fixed        |   Keywords:  r.watershed, Large grids
       CPU:  x86-64       |   Platform:  Linux
--------------------------+--------------------------------------
Changes (by neteler):

 * status:  new => closed
 * resolution:   => fixed
 * milestone:  7.0.5 => 7.0.0


Old description:

> tried r.watershed on a large elevation grid (51000 rows, 133000 columns,
> 6783000000 cells) with the following options:
>
>  r.watershed -m elevation=nc_20ft_ncfpm at statewide threshold=500000
> accumulation=nc_flow_accum_wsh at statewide drainage=nc_direct_wsh at statewide
> basin=nc_wshed_label_wsh stream=nc_stream_seg_wsh
> half_basin=nc_half_basin_wsh memory=8000
>
> and got the following output:
>
> SECTION 1 beginning: Initiating Variables. 5 sections total.
> SECTION 1a: Mark masked and NULL cells
> segment_format(fd,1,-803458658,1,4096,8): illegal value(s)
> seg_open(): illegal configuration parameter(s)
> segment_format(fd,1,-803458657,1,262144,16): illegal value(s)
> seg_open(): illegal configuration parameter(s)
> SECTION 1b: Determining Offmap Flow.
> Subprocess failed with exit code 11
> category information for [nc_flow_accum_wsh at statewide] in [statewide]
> missing or invalid
> category information for [nc_direct_wsh at statewide] in [statewide] missing
> or invalid
> category information for [nc_wshed_label_wsh] in [statewide] missing or
> invalid
> category information for [nc_stream_seg_wsh] in [statewide] missing or
> invalid
> category information for [nc_half_basin_wsh] in [statewide] missing or
> invalid
> (Sat Aug 27 11:38:42 2011) Command finished (45054 sec)
>
> GRASS 7.0 svn pull from 8/17/2011
>
> looking at raster/r.watershed/seg/cseg.h

New description:

 tried r.watershed on a large elevation grid (51000 rows, 133000 columns,
 6783000000 cells) with the following options:

  r.watershed -m elevation=nc_20ft_ncfpm at statewide threshold=500000
 accumulation=nc_flow_accum_wsh at statewide drainage=nc_direct_wsh at statewide
 basin=nc_wshed_label_wsh stream=nc_stream_seg_wsh
 half_basin=nc_half_basin_wsh memory=8000

 and got the following output:


 {{{
 SECTION 1 beginning: Initiating Variables. 5 sections total.
 SECTION 1a: Mark masked and NULL cells
 segment_format(fd,1,-803458658,1,4096,8): illegal value(s)
 seg_open(): illegal configuration parameter(s)
 segment_format(fd,1,-803458657,1,262144,16): illegal value(s)
 seg_open(): illegal configuration parameter(s)
 SECTION 1b: Determining Offmap Flow.
 Subprocess failed with exit code 11
 category information for [nc_flow_accum_wsh at statewide] in [statewide]
 missing or invalid
 category information for [nc_direct_wsh at statewide] in [statewide] missing
 or invalid
 category information for [nc_wshed_label_wsh] in [statewide] missing or
 invalid
 category information for [nc_stream_seg_wsh] in [statewide] missing or
 invalid
 category information for [nc_half_basin_wsh] in [statewide] missing or
 invalid
 (Sat Aug 27 11:38:42 2011) Command finished (45054 sec)

 GRASS 7.0 svn pull from 8/17/2011
 }}}

 looking at raster/r.watershed/seg/cseg.h

--

Comment:

 Closing as suggested, it was already working 2 years ago as per upper
 comment.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/1429#comment:4>
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