GRASS and windows console: Difference between revisions
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''This page shows | ''This page shows extended examples how to run GRASS modules in the winGRASS windows console'' | ||
==Windows batch files in GRASS== | ==Windows batch files in GRASS== | ||
In order to ease the workflow of analysis, several GRASS modules can be invoked at once by an batch file (*.bat) in the winGRASS windows console. | In order to ease the workflow of analysis, several GRASS modules can be invoked at once by an batch file (*.bat) in the winGRASS windows console. | ||
[https://trac.osgeo.org/grass/browser/grass/trunk/scripts Python grass modules] (e.g. v.db.addcolumn) have to be invoked by ''call'' in the batch-file. | |||
<source lang="bat"> | <source lang="bat"> | ||
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v.to.db map=myreg option=area columns=col1 | v.to.db map=myreg option=area columns=col1 | ||
</source> | </source> | ||
Running batch files without starting up GRASS: | |||
<source lang="bat"> | |||
"%ProgramFiles?%\QGIS 2.18\bin\Grass72.bat" --exec MyScript.bat D:/myGrassData/MyLoc/MyMapset | |||
</source> | |||
==g.list output as input for another GRASS module== | |||
Using g.list output as input variable for another module, e.g. to remove a list raster map. | |||
<source lang="bat"> | |||
FOR /F %c in ('g.list "type=raster" "pattern=*2" "mapset=user1" "separator=comma"') DO SET RASTER2REMOVE=%c | |||
echo %RASTER2REMOVE% | |||
b172,d172,it172,r172 | |||
g.remove type=raster name=%RASTER2REMOVE% | |||
The following data base element files would be deleted: | |||
raster/b172@user1 | |||
raster/d172@user1 | |||
raster/it172@user1 | |||
raster/r172@user1 | |||
WARNING: Nothing removed. You must use the force flag (-f) to actually | |||
remove them. Exiting. | |||
</source> | |||
Using g.list output as input variable for another module, e.g. to loop through a list of vector maps and buffer them. | |||
<source lang="bat"> | |||
FOR /F %c IN ('g.list "type=vector" "separator=comma"') DO SET VECTLIST=%c | |||
FOR %g IN (%VECTLIST%) DO v.buffer input=%g output=%g_buffer_200 distance=200 | |||
</source> | |||
== selecting a different shell == | |||
On MS Windows, in the absence of the environmental variable GRASS_SH, the grass startup script selects the shell specified in environment variable ComSpec. This is typically ''cmd.exe''. | |||
<source lang="bat"> | |||
REM check shell | |||
echo %ComSpec% | |||
C:\WINDOWS\system32\cmd.exe | |||
</source> | |||
The default shell can be overridden by setting the environment variable GRASS_SH. | |||
To make [https://en.wikipedia.org/wiki/PowerShell MS powershell] the startup command shell set the environment variable with | |||
<source lang="bat"> | |||
SET GRASS_SH=%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe | |||
</source> | |||
in ''C:\OSGeo4W64\apps\grass\grass-7.7.svn\etc\env.bat'' (e.g. for OSGeo4W 64bit). | |||
[[Category: Development]] | |||
[[Category: FAQ]] | |||
[[Category: WinGRASS]] | |||
Latest revision as of 19:44, 23 December 2018
This page shows extended examples how to run GRASS modules in the winGRASS windows console
Windows batch files in GRASS
In order to ease the workflow of analysis, several GRASS modules can be invoked at once by an batch file (*.bat) in the winGRASS windows console.
Python grass modules (e.g. v.db.addcolumn) have to be invoked by call in the batch-file.
@ECHO ON
g.region -p
v.in.region output=myreg
call v.db.addtable map=myreg
call v.db.addcolumn map=myreg columns="col1 double"
v.to.db map=myreg option=area columns=col1
Running batch files without starting up GRASS:
"%ProgramFiles?%\QGIS 2.18\bin\Grass72.bat" --exec MyScript.bat D:/myGrassData/MyLoc/MyMapset
g.list output as input for another GRASS module
Using g.list output as input variable for another module, e.g. to remove a list raster map.
FOR /F %c in ('g.list "type=raster" "pattern=*2" "mapset=user1" "separator=comma"') DO SET RASTER2REMOVE=%c
echo %RASTER2REMOVE%
b172,d172,it172,r172
g.remove type=raster name=%RASTER2REMOVE%
The following data base element files would be deleted:
raster/b172@user1
raster/d172@user1
raster/it172@user1
raster/r172@user1
WARNING: Nothing removed. You must use the force flag (-f) to actually
remove them. Exiting.
Using g.list output as input variable for another module, e.g. to loop through a list of vector maps and buffer them.
FOR /F %c IN ('g.list "type=vector" "separator=comma"') DO SET VECTLIST=%c
FOR %g IN (%VECTLIST%) DO v.buffer input=%g output=%g_buffer_200 distance=200
selecting a different shell
On MS Windows, in the absence of the environmental variable GRASS_SH, the grass startup script selects the shell specified in environment variable ComSpec. This is typically cmd.exe.
REM check shell
echo %ComSpec%
C:\WINDOWS\system32\cmd.exe
The default shell can be overridden by setting the environment variable GRASS_SH.
To make MS powershell the startup command shell set the environment variable with
SET GRASS_SH=%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe
in C:\OSGeo4W64\apps\grass\grass-7.7.svn\etc\env.bat (e.g. for OSGeo4W 64bit).