I cannot group nodes(Ctrl-G) in the node editor. The command appears in the search menu, but is also invalid.
Is this a
I would really like to have it for readability of my node tree.
I use armory 0.4 on windows 10.
Hopefully implemented soon…would also love that. It’s currently planned at https://github.com/armory3d/armory/issues/723. 
You can technically already achieve this, or a resemblance to it by using the “Call Node Group” node, if you look at the 3 images below the first is the “Main” node setup. that makes a call to a “SetVariables” node tree, and a “LeftRight” node tree, as long as you connect your nodes to a “Node Output” node inside of your pseudo-groups, then you can plug them into just about anywhere you need them in the working node tree.
[Main nodetree]
[Variables nodetree]
[Control nodetree]
run it and you get the output working as expected
thank you both for your replys.
@lubos
Silly me, I should check the github from next time but thanks to @rovacado it turned out to be a very informative thread. I’ll try that out.
@rovacado
however, we still have the same problem with OnUpdate, which is not to be sure that the image has been updated … leads to shifts between refresh image and activation of the nodes. Do you know a solution?
see here too Screen flush followed by @lubos
