Is there a way to Weight a Group, like Weight Paint in Blender ?

depending on what you're doing using an attribute would be better.

Doing what with it ?

I don't blender, but I think you are talking about the same thing here :-)

A “group” is a group in Houdini. “Weights” are, really, just attributes (as it is called in Houdini and, really, everywhere else). So if you “create an attribute” (using AttributeCreate), you define what group to apply it to, then you can follow it up with a “paint attribute” node - with which you would paint the attributes' values - and call those “weights”.

Marc

Ok, thanks.

in short there is not, Groups are always boolean 0 or 1
so by default there is no way to have any operator that is using groups to use some “weighted group” version from attribute or not

but yes, attributes can be used as a weightmap, usually to blend 2 versions of a geometry wither using wrangle or Attrib Composite, unfortunately not yet using Blendshape or Sequence Blend, so you probably end up using wrangles