#2892: t.rast.aggregate: error when input space time raster dataset store many
rasters
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Reporter: tmsz | Owner: grass-dev@…
Type: defect | Status: new
Priority: normal | Milestone: 7.0.4
Component: Temporal | Version: 7.0.2
Keywords: wingrass, t.rast.aggregate, | CPU: x86-64
g.message |
Platform: MSWindows 7 |
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Steps to reproduce (follow example from Soren Gebbert presentation: The
temporal GRASS GIS framework, page 53):[[BR]]
* download the ECAD climate dataset from
[http://eca.knmi.nl/download/ensembles/data/Grid_0.25deg_reg/\] as several
netCDF files (tg_0.25deg_reg_1950-1964_v12.0.nc.gz,
tg_0.25deg_reg_1965-1979_v12.0.nc.gz,
tg_0.25deg_reg_1965-1979_v12.0.nc.gz,
tg_0.25deg_reg_1995-2015_v12.0.nc.gz) and import them with r.in.gdal in a
Lat/Lon location.[[BR]]
* import netCDF files
* {{{r.in.gdal -oe input=tg_0.25deg_reg_1950-1964_v5.0.nc
output=temperature_mean offset=0}}}[[BR]]
* {{{r.in.gdal -oe input=tg_0.25deg_reg_1965-1979_v12.0.nc
output=temperature_mean offset=5480}}}[[BR]]
* {{{r.in.gdal -oe input=tg_0.25deg_reg_1980-1994_v12.0.nc
output=temperature_mean offset=10959}}}[[BR]]
* {{{r.in.gdal -oe input=tg_0.25deg_reg_1995-2015_v12.0.nc
output=temperature_mean offset=16439}}}[[BR]]
total count of temperature_mean rasters = 23925[[BR]]
* {{{t.create type=strds output=temperature_mean_1950_2015_daily
temporal=absolute title="European mean temperature 1950-2015"
description="The European daily mean temperature"}}}[[BR]]
* create text file with all temperature_mean rasters[[BR]]
{{{
#!div style="font-size: 100%"
python code:
{{{#!python
import os
map_list = os.path.join(os.path.expanduser('~'), 'map_list.txt')
with open(map_list, 'w') as f:
for i in range(23925):
f.write('temperature_mean.{0}\n'.format(i + 1))
}}}
}}}
* {{{t.register -i type=rast input=temperature_mean_1950_2015_daily
file="path to the map_list.txt file" start=1950-01-01 increment="1
days"}}}[[BR]]
* {{{g.region -p rast=temperature_mean.1}}}[[BR]]
* {{{t.rast.aggregate input=temperature_mean_1950_2015_daily
method=average output=temperature_mean_1950_2015_monthly
base=temperature_mean_monthly granularity="1 months"}}}[[BR]]
Error message:
{{{
Traceback (most recent call last):
File "C:\Program Files (x86)\GRASS GIS
7.0.2/scripts/t.rast.aggregate.py", line 215, in <module>
main()
File "C:\Program Files (x86)\GRASS GIS
7.0.2/scripts/t.rast.aggregate.py", line 185, in main
nprocs))
File "C:\Program Files (x86)\GRASS GIS
7.0.2\etc\python\grass\script\core.py", line 580, in info
message(msg, flag='i')
File "C:\Program Files (x86)\GRASS GIS
7.0.2\etc\python\grass\script\core.py", line 551, in message
run_command("g.message", flags=flag, message=msg,
errors='ignore')
File "C:\Program Files (x86)\GRASS GIS
7.0.2\etc\python\grass\script\core.py", line 396, in
run_command
ps = start_command(*args, **kwargs)
File "C:\Program Files (x86)\GRASS GIS
7.0.2\etc\python\grass\script\core.py", line 364, in
start_command
return Popen(args, **popts)
File "C:\Program Files (x86)\GRASS GIS
7.0.2\etc\python\grass\script\core.py", line 67, in __init__
subprocess.Popen.__init__(self, args, **kwargs)
File "C:\Program Files (x86)\GRASS GIS
7.0.2\Python27\lib\subprocess.py", line 711, in __init__
errread, errwrite)
File "C:\Program Files (x86)\GRASS GIS
7.0.2\Python27\lib\subprocess.py", line 953, in
_execute_child
startupinfo)
WindowsError: [Error 206] The filename or extension is too
long
}}}
Error appear in the core.py file, class Popen (row 67). I try debug
subprocess.py file. Error realated with creating process (subprocess.py
file, method _subprocess.CreateProcess, row 946) when g.message.exe
command is callled (created process) with long message argument as args
parameter in method _subprocess.CreateProcess (attached file with args
argument). [[BR]]
On Windows OS platform is command-line string limitation for total length
of the following command line [https://support.microsoft.com/en-
us/kb/830473].
--
Ticket URL: <https://trac.osgeo.org/grass/ticket/2892>
GRASS GIS <https://grass.osgeo.org>
