[Qgis-user] R in QGIS on OSX using Kyngchaos build

[Alex Mandel]

I've been meaning to play with this too. I assumed it used rpy2 but
maybe that is not the case.

Looking at
https://docs.qgis.org/testing/en/docs/training_manual/processing/r_intro.html
https://docs.qgis.org/2.8/en/docs/user_manual/processing/3rdParty.html

There's nothing about external dependencies other than having R and
configuring the path to the binary.

The pages do however list the author of that module, Matteo Ghetta

I poked into the processing source code:
https://github.com/qgis/QGIS/blob/master/python/plugins/processing/algs/r/RUtils.py

And it looks like it sends R scripts out as R CMD via python's system
call methods, so like calling R on the command-line.

Maybe moving this over to the developer list will get a more formal
response, with better troubleshooting.

Thanks,
Alex

On 03/05/2016 10:09 AM, Pieter du Plooy wrote:
> William
> 
> Thank you so very much for your hard work!
> 
> Pieter
> 
> On Sat, Mar 5, 2016 at 7:55 PM, William Kyngesburye <woklist at kyngchaos.com>
> wrote:
> 
>> I don't know what Processing needs to work with R.
>>
>> I just posted QGIS 2.14.
>>
>>> On Mar 5, 2016, at 11:06 AM, Pieter du Plooy <pjduplooy at zpanelcp.com>
>> wrote:
>>>
>>> Hi William
>>>
>>> I was in fact referring to Processing plugin.
>>>
>>> I installed rgdal, but that did not make a difference.
>>>
>>> Bye the way, if I can be presumptuous, when are you planning to release
>> 2.14?
>>>
>>> Pieter
>>>
>>> On Sat, Mar 5, 2016 at 6:42 PM, William Kyngesburye <
>> woklist at kyngchaos.com> wrote:
>>> Sorry I didn't reply to your earlier email.
>>>
>>> I think it depends on how your scripts interact with R.  I have an R
>> plugin for the GDAL framework.  I also have an R plugin for the GEOS
>> framework, but that's for an old version of R.
>>>
>>> You can run R scripts from the Processing plugin, but I don't know how
>> that links R and QGIS data unless it's through GDAL.
>>>
>>> There is also rpy2 for using R from python, supposed to be a simple
>> instal with pip, but requires Xcode tools to compile.  I have a package for
>> an old R version, but I could update it.
>>>
>>>> On Mar 5, 2016, at 6:28 AM, Pieter du Plooy <pjduplooy at zpanelcp.com>
>> wrote:
>>>>
>>>> Hi guys
>>>>
>>>> I would like to use R scripts in  QGIS 2.12 from Kyngchaos and am
>> unable to.
>>>>
>>>> I have installed the R package from r-project, and all  dependencies.
>>>>
>>>> When I run the R scripts that I have downloaded, I get the missing
>> dependency problem.
>>>>
>>>> How do I go about rectifying it?
>>>>
>>>> Regards
>>>>
>>>> Pieter
>>>> _______________________________________________
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>>>
>>> -----
>>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>>> http://www.kyngchaos.com/
>>>
>>> "Time is an illusion - lunchtime doubly so."
>>>
>>> - Ford Prefect
>>>
>>>
>>>
>>> _______________________________________________
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>>
>> -----
>> William Kyngesburye <kyngchaos*at*kyngchaos*dot*com>
>> http://www.kyngchaos.com/
>>
>> "We can die but once, and that once we must die.  To be always fearing,
>> then, would not avert it, and would make life miserable."
>>
>> - Tarzan, on death