Giters

r-spatial / RQGIS3

Geek Repo:Geek Repo

Github PK Tool:Github PK Tool

RQGIS# not working if invoked from Rscript using a remote connection (ssh)

iquincoces opened this issue · comments

commented

When trying to use RQGIS3 inside an script that is sent to different servers, that locally worked perfectly, using a SSH connection a qt5 window creation fail crashes the script.

The only work arround we have found is to insert a "export DISPLAY=:0" command before invoking Rscript.

Best

commented

This is expected as QGIS tries to open a X Display on a machine without a display.
We do not yet support running RQGIS on a server by default but you already figured out a workaround :)

We are also using the same way to run RQGIS on Travis.

commented

Usually, when running RQGIS3 on the server, there should at least appear a message telling the user what to do to run RQGIS3 on a server:

system('export DISPLAY=:99 && xdpyinfo -display $DISPLAY > /dev/null || sudo Xvfb $DISPLAY -screen 99 1024x768x16 &')
commented

He/she was calling RQGIS from his local machine sending the jobs via SSH to the server. I think our checks do not catch this since the call is evaluated locally in the first place.