[GRASS-user] Pandas installation in GRASS GIS environment

[Dheeraj Chand]

Let me try this when I get to my desk. My suspicion is that the Python that GRASS is using does not have Pandas and that the path inside the self-contained binary’s terminal does not easily give you access to the foundation libraries you’ll need to install it. 

Let me check and let you know. 

Sent from my iPhone

> On Dec 20, 2021, at 7:57 AM, Gioia Blayer <gioia.blayer at mail.huji.ac.il> wrote:
> 
> 
> Thank you all for the reply and help,
> 
> Veronica - I tried according to the link sent but unfortunately it still doesn't work.
> 
> Dheeraj - I downloaded GRASS GIS 7.8.6 from the link on the website https://grass.osgeo.org/download/mac/ and followed the instructions given. Is this what you meant?
> 
> Overall I am able to install Add-ons, it's just with the add-ons that depend on python packages (like r.area.createweight that depends on pandas and scikit-learn) that I have difficulty in installing the relevant packages in GRASS GIS python environment. Maybe I'm missing something - I will try to remove and re-install the program from scratch.
> 
> Thanks again!
> 
> 
>> On Mon, Dec 20, 2021 at 3:19 PM Dheeraj Chand <dheeraj at dheerajchand.com> wrote:
>> This may also depend on how you have built GRASS on Mac. There are a few ways to do it, all of which are a big pain! Which technique did you use?
>> 
>> Sent from my iPhone
>> 
>>>> On Dec 20, 2021, at 5:42 AM, Veronica Andreo <veroandreo at gmail.com> wrote:
>>>> 
>>> 
>>> Hi Gioia,
>>> 
>>> Have you tried with `pip3 install pandas` in the terminal? I guess the pandas you use within pycharm is in a virtualenv or so, and grass might not have access to it. I do not use Mac but I found this: https://www.geeksforgeeks.org/how-to-install-python-pandas-on-macos/
>>> 
>>> hope that helps
>>> Vero
>>> 
>>>> El dom, 19 dic 2021 a las 15:33, Gioia Blayer (<gioia.blayer at mail.huji.ac.il>) escribió:
>>>> Hello everyone, 
>>>> 
>>>> I am trying to install the module r.area.createweight in GRASS GIS version 7.8.6 on macOS Monterey 12.1. When I run the command g.extension r.area.createweight from the console in GRASS GIS I get the following error:
>>>> 
>>>> Fetching <r.area.createweight> from GRASS GIS Addons repository (be patient)...
>>>> ERROR: Pandas is not installed
>>>> Compiling...
>>>> [make: *** [r.area.createweight.tmp.html] Error 1
>>>> ERROR: Compilation failed, sorry. Please check the above error messages.
>>>> 
>>>> I do have Pandas because I use it for python in pycharm, but I do not understand how to install Pandas in the GRASS GIS environment. 
>>>> Hope someone can help me with this, I feel it's something quick and technical but I'm new to grass gis, so it takes me some time to learn it.
>>>> 
>>>> Thank you in advance for the time and help!
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