[GRASS-user] grass-user Digest, Vol 224, Issue 1

Tue Dec 17 20:46:45 PST 2024

Hopefully someone smarter than me can figure this one out. I've been able
to access GRASS GIS 8.4 from inside another python environment, but not the
other way around. I don't want to leave you empty-handed so here's a
workaround.

If she activates her conda environment and activates a python shell or
program you can throw the following into an IPython session or other Python
program.

"""
import sys
import subprocess
sys.path.append(subprocess.check_output(["C:\\Program Files\\GRASS GIS
8.4\\grass84.bat", "--config", "python_path"], text=True,
shell=True).strip())
import grass.script as gs

# Now you can add any other imports that you want.
"""

Things get a little easier if she adds the directory "C:\Program
Files\GRASS GIS 8.4\" into her "Path" environment variable so she can
execute "grass84.bat" or "grass84"  from the terminal and you can
replace the full path in the code above to "grass84". You can also execute
commands in a grass shell like you can on Linux or Mac from Powershell or
the Command Prompt.

She can even use the new grass.jupyter
<https://www.youtube.com/watch?v=4wFXRYHiuUs&t=326s> interface to run grass
modules inside a Jupyter Notebook.

On Tue, Dec 17, 2024 at 7:13 PM Gregory Power <gregorywpower at gmail.com>
wrote:

> I just want to make sure I’m understanding you properly, you’re trying to
> access conda environments from inside the grass shell? They may need to
> open up a Powershell prompt, type “where.exe conda” copy the path that
> command spits out into their “Path” environment variable—which they can do
> at the “system” level or “user” level.
>
>
> On Tue, Dec 17, 2024 at 18:52 Michael Barton <Michael.Barton at asu.edu>
> wrote:
>
>> Thanks Gregory. Currently, our issue is making sure that relevant Python
>> packages are accessible within an operating GRASS environment, which is
>> distinct from a general Windows environment.
>>
>> Michael
>> _____________________________
>>
>> C. Michael Barton
>> Associate Director, School of Complex Adaptive Systems (
>> https://scas.asu.edu)
>> Professor, School of Human Evolution & Social Change (
>> https://shesc.asu.edu)
>> Director, Center for Social Dynamics & Complexity (
>> https://complexity.asu.edu)
>> Arizona State University
>> Tempe, AZ 85287-2701
>> USA
>>
>> Executive Director, Open Modeling Foundation (
>> https://openmodelingfoundation.github.io)
>>
>>
>> Director, Network for Computational Modeling in Social & Ecological
>> Sciences (https://comses.net)
>>
>> personal website: http://www.public.asu.edu/~cmbarton
>>
>>
>> On Dec 17, 2024, at 4:34 PM, Gregory Power <gregorywpower at gmail.com>
>> wrote:
>>
>> Disregard the previous, it appears the grass conda-forge feedstock isn't
>> alive. Let me do some digging and get back to you.
>>
>> On Tue, Dec 17, 2024 at 5:53 PM Gregory Power <gregorywpower at gmail.com>
>> wrote:
>>
>>> Hey Michael & Vanessa,
>>>
>>> Wrangling Python packages can be a bit tricky. Especially if you're
>>> dealing with virtual environments. Installing packages through pip could
>>> cause your dependencies to conflict between projects. That being said,
>>> Anaconda's conda does have its own pitfalls, especially if you're part of
>>> an organization larger than 200 people that uses Anaconda's channels (the
>>> conda-forge channel is exempt from this since it is community run).
>>>
>>> Vanessa will have to create a python environment through conda or pixi
>>> and add grass/scikit-learn to the same environment. I'd recommend pixi
>>> instead of having to reconfigure conda to point to new channels. If you're
>>> only able to work with conda, I'd recommend creating a new environment and
>>> putting both of those dependencies into their own project.
>>>
>>> Here's the instructions from the osgeo-forge grass-feedstock
>>> <https://urldefense.com/v3/__https://github.com/osgeo-forge/grass-feedstock?tab=readme-ov-file*installing-grass__;Iw!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lQJnS64jQ$>
>>> .
>>>
>>>  `conda config --add channels conda-forge`
>>>
>>> If you want to install both packages into your 'base' environment on
>>> Anaconda. But I highly recommend you at least create a new environment
>>> <https://urldefense.com/v3/__https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html__;!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lQcJ3lB9g$> and
>>> install your packages there.
>>>
>>> `conda install grass scikit-learn`
>>>
>>> With pixi
>>> <https://urldefense.com/v3/__https://pixi.sh/latest/__;!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lRNjs-k4A$>
>>> :
>>>
>>> pixi init <name of project>
>>> cd <name-of-directory>
>>> pixi add python grass scikit-learn
>>> pixi shell
>>>
>>> Thank you,
>>> Gregory
>>>
>>> On Tue, Dec 17, 2024 at 3:01 PM <grass-user-request at lists.osgeo.org>
>>> wrote:
>>>
>>>> Send grass-user mailing list submissions to
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>>>>
>>>>
>>>> Today's Topics:
>>>>
>>>>    1. Python in GRASS on Windows (Michael Barton)
>>>>
>>>>
>>>> ----------------------------------------------------------------------
>>>>
>>>> Message: 1
>>>> Date: Tue, 17 Dec 2024 16:53:04 +0000
>>>> From: Michael Barton <Michael.Barton at asu.edu>
>>>> To: GRASS users <grass-user at lists.osgeo.org>, GRASS developers
>>>>         <grass-dev at discourse.osgeo.org>
>>>> Cc: Vanessa Extrem <Vanessa.Extrem at uv.es>
>>>> Subject: [GRASS-user] Python in GRASS on Windows
>>>> Message-ID: <12319197-5F56-4841-AC64-1F9FB946BBB5 at asu.edu>
>>>> Content-Type: text/plain; charset="us-ascii"
>>>>
>>>> I have a student who is interested in using some of the modeling tools
>>>> available in GRASS extensions. These require some Python tools (e.g.,
>>>> scikit-learn) to be installed in her GRASS environments.
>>>>
>>>> For me (on a Mac), I can just  pip install -U scikit-learn from the
>>>> GRASS terminal.  But when she does this, the Windows terminal can't find
>>>> pip. This seems to be just a path problem but I don't know how to
>>>> troubleshoot it on Windows. She has installed Python via Anaconda and can
>>>> use Python in GRASS via the Python console, but this does not seem to help
>>>> in this case (conda can't be found from the GRASS Windows terminal). Can
>>>> someone point us to a guide of how to install Python packages into the
>>>> GRASS environment on Windows and/or adjust the path so that the Windows
>>>> terminal can access Python utilities?
>>>>
>>>> Thanks
>>>> Michael
>>>> _____________________________
>>>>
>>>> C. Michael Barton
>>>> Associate Director, School of Complex Adaptive Systems (
>>>> https://scas.asu.edu<https://scas.asu.edu/>)
>>>> Professor, School of Human Evolution & Social Change (
>>>> https://shesc.asu.edu)
>>>> Director, Center for Social Dynamics & Complexity (
>>>> https://complexity.asu.edu)
>>>> Arizona State University
>>>> Tempe, AZ 85287-2701
>>>> USA
>>>>
>>>> Executive Director, Open Modeling Foundation (
>>>> https://openmodelingfoundation.github.io
>>>> <https://urldefense.com/v3/__https://openmodelingfoundation.github.io__;!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lQZmEit-g$>
>>>> <https://openmodelingfoundation.github.io/
>>>> <https://urldefense.com/v3/__https://openmodelingfoundation.github.io/__;!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lTlvQvdZA$>
>>>> >)
>>>> Director, Network for Computational Modeling in Social & Ecological
>>>> Sciences (https://comses.net
>>>> <https://urldefense.com/v3/__https://comses.net__;!!IKRxdwAv5BmarQ!fPTPojW_eS4QXMXciuXW1DHCkwgihAaLHf8l0acQRX8bPj-pg5L-iMPSabCAaxVjFAy1_Rkinn5YW-NVRjj_0lR81gY7eA$>
>>>> )
>>>>
>>>> personal website: http://www.public.asu.edu/~cmbarton
>>>>
>>>>
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>>>> End of grass-user Digest, Vol 224, Issue 1
>>>> ******************************************
>>>>
>>>
>>
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