[GRASS-user] i.segment.stats memory usage error

[James Duffy]

On 27 October 2016 at 11:08, Moritz Lennert <mlennert at club.worldonline.be>
wrote:

>
>
> Le 27 octobre 2016 11:22:02 GMT+02:00, James Duffy <
> james.philip.duffy at gmail.com> a écrit :
> >Hello,
> >
> >I'm trying to use i.segment.stats with GRASS 7.0.4 in the osgeolive
> >32bit
> >operating system.
> >
> >Prior to using this tool I have successfully created my segmented map
> >using
> >i.segment.
> >
> >When I try to execute the following command:
> >
> >i.segment.stats --overwrite --verbose map=gp_seg_optimum at gp1 \
> >rasters=gp_ortho.1 at gp1,gp_ortho.2 at gp1,gp_ortho.3 at gp1,gp_ortho.4 at gp1 \
> >raster_statistics=min,max,mean,stddev,variance,sum \
> >csvfile=/home/jpd205/Wales_GRASS/GarronPill/gp_seg_stats \
> >separator=comma
> >
> >I get this error:
> >
> >Calculating geometry statistics
> >ERROR: G_malloc: unable to allocate 4273800320 bytes of memory at
> >       /tmp/tmpgzUtnA/r.object.geometry/main.c:129
>
> This is coming from r.object.geometry.
>
> What are your region settings (g.region -p) ? How many segments do you
> have ?
>

GRASS 7.0.4 (GarronPill):~ > g.region -p
projection: 99 (OSGB 1936 / British National Grid)
zone:       0
datum:      osgb36
ellipsoid:  airy
north:      208007.00931776
south:      207952.59780698
west:       200993.90853302
east:       201097.28911076
nsres:      0.00430914
ewres:      0.00430914
rows:       12627
cols:       23991
cells:      302934357


>
> Try running I.segment.stats without requesting form statistics.


Running:

i.segment.stats --overwrite --verbose map=gp_seg_optimum at gp1 \
csvfile=/home/jpd205/Wales_GRASS/GarronPill/gp_seg_stats \
separator=comma

Gives:

Calculating geometry statistics
ERROR: G_malloc: unable to allocate 4273800320 bytes of memory at
       /tmp/tmpgzUtnA/r.object.geometry/main.c:129

And try running r.object.geometry directly.
>

Running:

r.object.geometry --overwrite --verbose input=gp_seg_optimum at gp1 \
output=/home/jpd205/Wales_GRASS/GarronPill/gp_test separator=comma

Gives:

Current region rows: 12627, cols: 23991
ERROR: G_malloc: unable to allocate 4273800320 bytes of memory at
       /tmp/tmpgzUtnA/r.object.geometry/main.c:129


>
> Moritz
>
>
Thanks for your reply.

James
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