Brian, your comment:
“I can add support to get that data from
https://api.wetter-arbon.ch/v1/data/radiation”
implies that you will add functionality to WD to go to a web site, retrieve data, then incorporated it into WD.
For those who want a self contained system, can you do the same thing but instead of pointing to a web site, point to a file that is local on my computer?
Maybe as Niko indicates there is something like this already in WD and I’ve just not found it.
Is there a Wiki or YouTube video on how to do this, like so many other things you explain?
Thanks. Dale