[GRASS-user] grass-user Digest, Vol 107, Issue 2

Anna Petrášová kratochanna at gmail.com
Thu Mar 5 10:14:05 PST 2015 

On Wed, Mar 4, 2015 at 10:09 PM, Rob Parsons <jrobparsons at gmail.com> wrote:

> Thanks for the direction!
>
> I have successfully worked through the examples on
> http://grass.osgeo.org/grass70/manuals/libpython/script_intro.html except
> for the last one about adding a module interface to a script. I copied the
> code into a python file named module_interface.py. After I File-> "Launch
> script" and select module_interface.py, the module GUI pops up and prompts
> for the raster inputs and output. But, after clicking on "Run", the script
> reports the following message:
>
>
Before the module dialog opens, you should get a dialog asking to add the
script path to GRASS_ADDON_PATH. If you do it, you should be able to run
the script. Did you get this dialog?

Anna

(Wed Mar 04 21:55:29
> 2015)
> module_interface araster=el_D782_6m at PERMANENT braster=el_D783_6m at PERMANENT
> output=el_r_6m
> 'module_interface' is not recognized as an internal or
> external command,
> operable program or batch file.
> (Wed Mar 04 21:55:29 2015) Command finished (0
> sec)
>
> Anyone seen this message?
>
> Rob Parsons
> Raleigh NC
>
>
>
> On Sun, Mar 1, 2015 at 8:13 PM, <grass-user-request at lists.osgeo.org>
> wrote:
>
>> Send grass-user mailing list submissions to
>>         grass-user at lists.osgeo.org
>>
>> To subscribe or unsubscribe via the World Wide Web, visit
>>         http://lists.osgeo.org/mailman/listinfo/grass-user
>> or, via email, send a message with subject or body 'help' to
>>         grass-user-request at lists.osgeo.org
>>
>> You can reach the person managing the list at
>>         grass-user-owner at lists.osgeo.org
>>
>> When replying, please edit your Subject line so it is more specific
>> than "Re: Contents of grass-user digest..."
>>
>>
>> Today's Topics:
>>
>>    1. GRASS 7.0 Running Scripts (.\GRASS GIS 7.0.0\scripts)
>>       (Rob Parsons)
>>    2. Re: GRASS 7.0 Running Scripts (.\GRASS GIS        7.0.0\scripts)
>>       (Vaclav Petras)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 1 Mar 2015 19:37:59 -0500
>> From: Rob Parsons <jrobparsons at gmail.com>
>> To: grass-user at lists.osgeo.org
>> Subject: [GRASS-user] GRASS 7.0 Running Scripts (.\GRASS GIS
>>         7.0.0\scripts)
>> Message-ID:
>>         <
>> CAFvPsPBH1xVpEgff15hxknY0qeeMUeehP9bucV4FB9ZgQ_2+cg at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello,
>>
>> How do I run scripts located in C:\Program Files (x86)\GRASS GIS
>> 7.0.0\scripts?
>>
>> I am learning GRASS 7.0.0 on Windows 7 by converting some GRASS 6.4 shell
>> scripts to GRASS 7 Python scripts (import grass.script as grass) and GRASS
>> 7 PyGRASS scripts (from grass.pygrass.modules import Module).
>>
>> My installation is working fine. I can manually run the commands (from a
>> shell script) in the "Command console" window of the "Layer Manager". For
>> example, I can enter "g.region swwake_30m -p" in the "Command prompt" area
>> and get the following results:
>>
>>
>> Sun Mar 01 12:32:30
>> 2015)
>> g.region swwake_30m
>> -p
>> projection: 99 (Lambert Conformal Conic)
>> zone:       0
>> datum:      nad83
>> ellipsoid:  a=6378137 es=0.006694380022900787
>> north:      228500
>> south:      215000
>> west:       630000
>> east:       645000
>> nsres:      30
>> ewres:      30
>> rows:       450
>> cols:       500
>> cells:      225000
>> (Sun Mar 01 12:32:31 2015) Command finished (0
>> sec)
>>
>> I am using the "Pythonwin" IDE to develop the scripts (C:\Program Files
>> (x86)\GRASS GIS 7.0.0\Python27\lib\site-packages\pythonwin\Pythonwin.exe).
>> In the "GRASS GIS 7.0.0 GUI" Command Prompt window I type "pythonwin" and
>> the IDE starts up.
>>
>> I have spent several days trying to understand how to create GRASS Python
>> scripts and GRASS PyGRASS scripts from the online documentation(
>> http://grasswiki.osgeo.org/wiki/GRASS_and_Python) and by studying the
>> script samples (C:\Program Files (x86)\GRASS GIS 7.0.0\scripts). I have
>> not
>> been successful in getting example code to run but I am still working
>> through the documentation.
>>
>> But, I should be able to run scripts located in C:\Program Files
>> (x86)\GRASS GIS 7.0.0\scripts.
>>
>> Correct?
>>
>> 1. If I open .\scripts\d.what.rast.py in the Pythonwin IDE and try to run
>> it, I get this output:
>>
>> OSError error(9): The handle is invalid
>> Traceback (most recent call last):
>>   File "C:\Program Files (x86)\GRASS GIS
>>
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> line 325, in RunScript
>>     exec codeObject in __main__.__dict__
>>   File
>>
>> "C:\Users\Rob\Documents\grassscripts\pygrass\make_raster_using_mapcalc.py",
>> line 8, in <module>
>>     g.message("Filter elevation map by a threshold...")
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\etc\python\grass\pygrass\modules\shortcuts.py", line 46, in
>> __getattr__
>>     return self.cls('%s.%s' % (self.prefix, name.replace('_', '.')))
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\etc\python\grass\pygrass\modules\interface\module.py", line 498, in
>> __init__
>>     raise GrassError(str_err % self.name)
>> GrassError: Error running: `g.message --interface-description`.
>> Traceback (most recent call last):
>>   File "C:\Program Files (x86)\GRASS GIS
>>
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> line 325, in RunScript
>>     exec codeObject in __main__.__dict__
>>   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> line 45, in <module>
>>     main()
>>   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> line 30, in main
>>     options, flags = gcore.parser()
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\etc\python\grass\script\core.py", line 680, in parser
>>     p = subprocess.Popen([prog, '-n'] + argv, stdout=subprocess.PIPE)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 703, in __init__
>>     errread, errwrite) = self._get_handles(stdin, stdout, stderr)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 839, in _get_handles
>>     p2cread = self._make_inheritable(p2cread)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 878, in _make_inheritable
>>     _subprocess.DUPLICATE_SAME_ACCESS)
>> WindowsError: [Error 6] The handle is invalid
>> Traceback (most recent call last):
>>   File "C:\Program Files (x86)\GRASS GIS
>>
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> line 325, in RunScript
>>     exec codeObject in __main__.__dict__
>>   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> line 45, in <module>
>>     main()
>>   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> line 30, in main
>>     options, flags = gcore.parser()
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\etc\python\grass\script\core.py", line 680, in parser
>>     p = subprocess.Popen([prog, '-n'] + argv, stdout=subprocess.PIPE)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 703, in __init__
>>     errread, errwrite) = self._get_handles(stdin, stdout, stderr)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 839, in _get_handles
>>     p2cread = self._make_inheritable(p2cread)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\Python27\lib\subprocess.py",
>> line 878, in _make_inheritable
>>     _subprocess.DUPLICATE_SAME_ACCESS)
>> WindowsError: [Error 6] The handle is invalid
>> >>>
>>
>> 2. If I go to the "Python shell" tab on the "Layer Manager" and do File ->
>> Launch Script and browse to .\scripts\d.what.rast.py, I get this output:
>>
>> (Sun Mar 01 12:32:31 2015) Command finished (0
>> sec)
>> Launching script 'C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\
>> d.what.rast.py'...
>> Traceback (most recent call last):
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\gui\wxpython\gui_core\forms.py", line 718, in OnRun
>>
>> gcmd.Command(cmd)
>>   File "C:\Program Files (x86)\GRASS GIS
>> 7.0.0\gui\wxpython\core\gcmd.py", line 397, in __init__
>>
>> _("Error: ") + self.__GetError()))
>> core.gcmd
>> .
>> GException
>> :
>> Execution failed: 'd.what.rast map=elevation'
>> Details:
>> Error:
>>
>> Any ideas on what might be going on here?
>>
>> Rob Parsons
>> Raleigh NC
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL: <
>> http://lists.osgeo.org/pipermail/grass-user/attachments/20150301/b41b2959/attachment-0001.html
>> >
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Sun, 1 Mar 2015 20:12:57 -0500
>> From: Vaclav Petras <wenzeslaus at gmail.com>
>> To: Rob Parsons <jrobparsons at gmail.com>
>> Cc: GRASS user list <grass-user at lists.osgeo.org>
>> Subject: Re: [GRASS-user] GRASS 7.0 Running Scripts (.\GRASS GIS
>>         7.0.0\scripts)
>> Message-ID:
>>         <CABo5uVt7hq0QnHYqzV5O949h3URGxFOAjHNLxiMx=
>> V5rSK_wRw at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> On Sun, Mar 1, 2015 at 7:37 PM, Rob Parsons <jrobparsons at gmail.com>
>> wrote:
>>
>> > Hello,
>> >
>> > How do I run scripts located in C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\scripts?
>> >
>> > I am learning GRASS 7.0.0 on Windows 7 by converting some GRASS 6.4
>> shell
>> > scripts to GRASS 7 Python scripts (import grass.script as grass) and
>> GRASS
>> > 7 PyGRASS scripts (from grass.pygrass.modules import Module).
>> >
>> > My installation is working fine. I can manually run the commands (from a
>> > shell script) in the "Command console" window of the "Layer Manager".
>> For
>> > example, I can enter "g.region swwake_30m -p" in the "Command prompt"
>> area
>> > and get the following results:
>> >
>> >
>> > Sun Mar 01 12:32:30
>> > 2015)
>> > g.region swwake_30m
>> > -p
>> > projection: 99 (Lambert Conformal Conic)
>> > zone:       0
>> > datum:      nad83
>> > ellipsoid:  a=6378137 es=0.006694380022900787
>> > north:      228500
>> > south:      215000
>> > west:       630000
>> > east:       645000
>> > nsres:      30
>> > ewres:      30
>> > rows:       450
>> > cols:       500
>> > cells:      225000
>> > (Sun Mar 01 12:32:31 2015) Command finished (0
>> > sec)
>> >
>> > I am using the "Pythonwin" IDE to develop the scripts (C:\Program Files
>> > (x86)\GRASS GIS
>> 7.0.0\Python27\lib\site-packages\pythonwin\Pythonwin.exe).
>> > In the "GRASS GIS 7.0.0 GUI" Command Prompt window I type "pythonwin"
>> and
>> > the IDE starts up.
>> >
>> > I have spent several days trying to understand how to create GRASS
>> Python
>> > scripts and GRASS PyGRASS scripts from the online documentation(
>> > http://grasswiki.osgeo.org/wiki/GRASS_and_Python) and by studying the
>> > script samples (C:\Program Files (x86)\GRASS GIS 7.0.0\scripts). I have
>> not
>> > been successful in getting example code to run but I am still working
>> > through the documentation.
>> >
>> > Please try the example from:
>>
>> http://grass.osgeo.org/grass70/manuals/libpython/script_intro.html
>>
>> I linked this page from documentation as well as the other Python wiki
>> page
>> from the GRASS and Python page:
>>
>> http://grasswiki.osgeo.org/wiki/GRASS_Python_Scripting_Library
>>
>> Note that GRASS scripts by default cannot run from outside GRASS GIS
>> session (environment). This is probably not emphasized enough in the
>> documentation.
>>
>> But, I should be able to run scripts located in C:\Program Files
>> > (x86)\GRASS GIS 7.0.0\scripts.
>> >
>> > Correct?
>> >
>> > Correct but can you please try some other module than a d.* module, e.g.
>> r.out.xyz? d.* commands are somehow special (although in this case it
>> probably doesn't matter).
>>
>>
>> > 1. If I open .\scripts\d.what.rast.py in the Pythonwin IDE and try to
>> run
>> > it, I get this output:
>> >
>> > OSError error(9): The handle is invalid
>> > Traceback (most recent call last):
>> >   File "C:\Program Files (x86)\GRASS GIS
>> >
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> > line 325, in RunScript
>> >     exec codeObject in __main__.__dict__
>> >   File
>> >
>> "C:\Users\Rob\Documents\grassscripts\pygrass\make_raster_using_mapcalc.py",
>> > line 8, in <module>
>> >     g.message("Filter elevation map by a threshold...")
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\etc\python\grass\pygrass\modules\shortcuts.py", line 46, in
>> > __getattr__
>> >     return self.cls('%s.%s' % (self.prefix, name.replace('_', '.')))
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\etc\python\grass\pygrass\modules\interface\module.py", line 498,
>> in
>> > __init__
>> >     raise GrassError(str_err % self.name)
>> > GrassError: Error running: `g.message --interface-description`.
>> > Traceback (most recent call last):
>> >   File "C:\Program Files (x86)\GRASS GIS
>> >
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> > line 325, in RunScript
>> >     exec codeObject in __main__.__dict__
>> >   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> > line 45, in <module>
>> >     main()
>> >   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> > line 30, in main
>> >     options, flags = gcore.parser()
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\etc\python\grass\script\core.py", line 680, in parser
>> >     p = subprocess.Popen([prog, '-n'] + argv, stdout=subprocess.PIPE)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 703, in __init__
>> >     errread, errwrite) = self._get_handles(stdin, stdout, stderr)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 839, in _get_handles
>> >     p2cread = self._make_inheritable(p2cread)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 878, in _make_inheritable
>> >     _subprocess.DUPLICATE_SAME_ACCESS)
>> > WindowsError: [Error 6] The handle is invalid
>> > Traceback (most recent call last):
>> >   File "C:\Program Files (x86)\GRASS GIS
>> >
>> 7.0.0\Python27\lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
>> > line 325, in RunScript
>> >     exec codeObject in __main__.__dict__
>> >   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> > line 45, in <module>
>> >     main()
>> >   File "C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\d.what.rast.py",
>> > line 30, in main
>> >     options, flags = gcore.parser()
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\etc\python\grass\script\core.py", line 680, in parser
>> >     p = subprocess.Popen([prog, '-n'] + argv, stdout=subprocess.PIPE)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 703, in __init__
>> >     errread, errwrite) = self._get_handles(stdin, stdout, stderr)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 839, in _get_handles
>> >     p2cread = self._make_inheritable(p2cread)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\Python27\lib\subprocess.py", line 878, in _make_inheritable
>> >     _subprocess.DUPLICATE_SAME_ACCESS)
>> > WindowsError: [Error 6] The handle is invalid
>> > >>>
>> >
>> >
>>
>> This might be somehow related to bug in Python itself:
>>
>> http://bugs.python.org/issue3905
>>
>> However, please focus on running the scripts for GRASS GIS from GRASS
>> session. The easiest way how to do that on MS Windows is to write the
>> script and then to start it from GUI (File > Run script) or from Python
>> shell tab in the GUI.
>>
>> It is possible to run scripts which are using GRASS modules from outside
>> of
>> GRASS session but it requires you to set up the GRASS environment
>> yourself.
>> This is possible but it has some challenges. On the other hand, if you
>> write your script in the way that it runs (only) in a GRASS session you
>> can
>> use GRASS features for automatic building of interface and thus create a
>> true GRASS module.
>>
>>
>> > 2. If I go to the "Python shell" tab on the "Layer Manager" and do File
>> ->
>> > Launch Script and browse to .\scripts\d.what.rast.py, I get this
>> output:
>> >
>> > (Sun Mar 01 12:32:31 2015) Command finished (0
>> > sec)
>> > Launching script 'C:\Program Files (x86)\GRASS GIS 7.0.0\scripts\
>> > d.what.rast.py'...
>> > Traceback (most recent call last):
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\gui\wxpython\gui_core\forms.py", line 718, in OnRun
>> >
>> > gcmd.Command(cmd)
>> >   File "C:\Program Files (x86)\GRASS GIS
>> > 7.0.0\gui\wxpython\core\gcmd.py", line 397, in __init__
>> >
>> > _("Error: ") + self.__GetError()))
>> > core.gcmd
>> > .
>> > GException
>> > :
>> > Execution failed: 'd.what.rast map=elevation'
>> > Details:
>> > Error:
>> >
>> > The error message seems to be incomplete but in any case, please try
>> with
>> r.out.xyz script and the example script from:
>>
>> http://grass.osgeo.org/grass70/manuals/libpython/script_intro.html
>>
>> Vaclav
>>
>>
>> > Any ideas on what might be going on here?
>> >
>> > Rob Parsons
>> > Raleigh NC
>> >
>> >
>> > _______________________________________________
>> > grass-user mailing list
>> > grass-user at lists.osgeo.org
>> > http://lists.osgeo.org/mailman/listinfo/grass-user
>> >
>> -------------- next part --------------
>> An HTML attachment was scrubbed...
>> URL: <
>> http://lists.osgeo.org/pipermail/grass-user/attachments/20150301/6ff05a0b/attachment.html
>> >
>>
>> ------------------------------
>>
>> _______________________________________________
>> grass-user mailing list
>> grass-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>
>> End of grass-user Digest, Vol 107, Issue 2
>> ******************************************
>>
>
>
> _______________________________________________
> grass-user mailing list
> grass-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-user
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20150305/74ca5f99/attachment-0001.html>

More information about the grass-user mailing list