#3197: Memory limit issues with r.univar (when used within i.segment.stats)
---------------------+-------------------------
Reporter: jpduffy | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 7.0.6
Component: Default | Version: 7.0.4
Keywords: | CPU: x86-32
Platform: Linux |
---------------------+-------------------------
Hello,
I am trying to use i.segment.stats as part of an OBIA workflow on high
resolution raster orthomosaics. So far I have used i.segment.uspo,
i.segment and r.clump to create a layer called gp_seg_optimum_clump. Using
r.clump means that the clumps are sequentially numbered, whereas they are
not directly after i.segment.
I try to run the following command:
i.segment.stats --overwrite --verbose map=gp_seg_optimum_clump@gp1 \
rasters=gp_ortho.1@gp1,gp_ortho.2@gp1,gp_ortho.3@gp1,gp_ortho.4@gp1 \
raster_statistics=min,max,mean,stddev,variance,sum \
csvfile=/home/jpd205/Wales_GRASS/GarronPill/gp_seg_stats \
separator=comma
And I get the following error:
Calculating geometry statistics
Calculating statistics for raster gp_ortho.1@gp1
ERROR: G_realloc: unable to allocate 572000 bytes of memory at
raster/r.univar/r.univar_main.c:324
Traceback (most recent call last):
File "/home/jpd205/.grass7/addons/scripts/i.segment.stats", line 251, in
<module>
main()
File "/home/jpd205/.grass7/addons/scripts/i.segment.stats", line 176, in
main
quiet=True)
File "/usr/lib/grass70/etc/python/grass/script/core.py", line 395, in
run_command
return handle_errors(returncode, returncode, args, kwargs)
File "/usr/lib/grass70/etc/python/grass/script/core.py", line 313, in
handle_errors
returncode=returncode)
grass.exceptions.CalledModuleError: Module run None ['r.univar', '--o', '
--q', '-et', 'zones=gp_seg_optimum_clump@gp1',
'output=/home/jpd205/Wales_GRASS/GarronPill/gp1/.tmp/osgeobeefy/6462.0',
'map=gp_ortho.1@gp1'] ended with error
Process ended with non-zero return code 1. See errors in the (error)
output.
Some details about my region settings and data:
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
r.info map=gp_seg_optimum_clump
+----------------------------------------------------------------------------+
| Map: gp_seg_optimum_clump Date: Thu Oct 27 14:28:30 2016
|
| Mapset: gp1 Login of Creator: jpd205
|
| Location: GarronPill
|
| DataBase: /home/jpd205/Wales_GRASS
|
| Title: gp_seg_optimum_clump ( gp_seg_optimum_clump )
|
| Timestamp: none
|
|----------------------------------------------------------------------------|
|
|
| Type of Map: raster Number of Categories: 0
|
| Data Type: CELL
|
| Rows: 12627
|
| Columns: 23991
|
| Total Cells: 302934357
|
| Projection: OSGB 1936 / British National Grid
|
| N: 208007.00931776 S: 207952.59780698 Res: 0.00430914
|
| E: 201097.28911076 W: 200993.90853302 Res: 0.00430914
|
| Range of data: min = 1 max = 1264957
|
|
|
| Data Source:
|
| gp_seg_optimum@gp1
|
|
|
|
|
| Data Description:
|
| generated by r.clump
|
|
|
| Comments:
|
| r.clump --overwrite --verbose -d input="gp_seg_optimum@gp1"
output="\ |
| gp_seg_optimum_clump" title="gp_seg_optimum_clump"
|
|
|
+----------------------------------------------------------------------------+
r.info map=gp_ortho.1
+----------------------------------------------------------------------------+
| Map: gp_ortho.1 Date: Mon Oct 17 09:06:32 2016
|
| Mapset: gp1 Login of Creator: jd
|
| Location: GarronPill
|
| DataBase: /home/jpd205/Wales_GRASS
|
| Title: ( gp_ortho.1 )
|
| Timestamp: none
|
|----------------------------------------------------------------------------|
|
|
| Type of Map: raster Number of Categories: 0
|
| Data Type: CELL
|
| Rows: 12627
|
| Columns: 23991
|
| Total Cells: 302934357
|
| Projection: OSGB 1936 / British National Grid
|
| N: 208007.00931776 S: 207952.59780698 Res: 0.00430914
|
| E: 201097.28911076 W: 200993.90853302 Res: 0.00430914
|
| Range of data: min = 0 max = 255
|
|
|
| Data Description:
|
| generated by r.in.gdal
|
|
|
| Comments:
|
| r.in.gdal -o input="/home/jd/GarronPill_R_BNG_PS2_O_C_RGB_TEX.tif"
o\ |
| utput="gp_ortho" memory=300 offset=0
|
|
|
+----------------------------------------------------------------------------+
Moritz Lennert believes that this is a memory issue limit with r.univar.
He suggested I submit this bug report.
Kind regards
James
--
Ticket URL: <https://trac.osgeo.org/grass/ticket/3197>
GRASS GIS <https://grass.osgeo.org>