[GRASS-stats] Running r-grass examples when building a R package

[Floris Vanderhaeghe]

Hi Bernardo,

The presented system() command requires grass to be in the system's 
PATH. An alternative is to use the R package link2GI 
<https://r-spatial.github.io/link2GI/> to get the gisBase argument of 
initGRASS(); AFAIK it has been updated to also support GRASS 8.

Possible approach copied from an R markdown document:

gisbase_grass <-
   if (interactive()) {
     if (.Platform$OS.type == "windows") 
link2GI::paramGRASSw()$gisbase_GRASS[1] else {
       link2GI::paramGRASSx()$gisbase_GRASS[1]
     }
   } else params$gisbase_grass


Regards

Floris


Op 26/08/2022 om 13:09 schreef Roger Bivand:
> Please also see
> https://github.com/rsbivand/rgrass/issues/64 and perhaps give more 
> context - is this the public github repo
> https://github.com/NINAnor/oneimpact/ ?
>
> Roger
>
> ---
> Roger Bivand
> Emeritus Professor
> Department of Economics
> Norwegian School of Economics, Bergen, Norway
>
> ------------------------------------------------------------------------
> *Fra:* grass-stats <grass-stats-bounces at lists.osgeo.org> på vegne av 
> Bernardo Santos via grass-stats <grass-stats at lists.osgeo.org>
> *Sendt:* fredag 26. august 2022, 12:56
> *Til:* grass-stats at lists.osgeo.org <grass-stats at lists.osgeo.org>; 
> GRASS User List <grass-user at lists.osgeo.org>
> *Emne:* [GRASS-stats] Running r-grass examples when building a R package
>
> Dear all,
>
> I am building a R package and some of the functions use rgrass to 
> connect to a GRASS project and run thingfs within GRASS.
> I have now set up a webpage for the package using pkgdown in 
> integrated to Github actions. This means when I push new commits all 
> the examples of R functions are run again and the webpage is updated 
> with the results of the examples. Here is the webpage: 
> https://ninanor.github.io/oneimpact/ 
> <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fninanor.github.io%2Foneimpact%2F&data=05%7C01%7Croger.bivand%40nhh.no%7C9ee806160e144928a19908da8751a4d1%7C33a15b2f849941998d56f20b5aa91af2%7C0%7C0%7C637971081981258278%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=DGuKqYQDHFgwT3qY%2BjzglZF1mboRdv2fx7ETXdmYRJ0%3D&reserved=0>
>
> All works fine, except the functions calling GRASS. When I run the 
> examples form my local computer everything works, but in the Github 
> actions it does not run, apparently because the command
>
> |system 
> <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Frdrr.io%2Fr%2Fbase%2Fsystem.html&data=05%7C01%7Croger.bivand%40nhh.no%7C9ee806160e144928a19908da8751a4d1%7C33a15b2f849941998d56f20b5aa91af2%7C0%7C0%7C637971081981258278%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=PWx9f7SSQY6EQn2nPNsCFAdIjT3hp3T6Kk7S9%2BAKnDs%3D&reserved=0>("grass78 
> --config path", intern = T)|
> to find the GRASS folder and use within rgrass::initGRASS does not 
> work, so the connection between R and GRASS do not exist.
>
> Does someone in the group has experience with that and could help with 
> hints to solve it?
> Is there a recommended way to make sure Github actions know where 
> GRASS is and use it?
>
> Best
> Bernardo
>
>
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