Hi,
attached photo shows a simplified version of a problem a have.
The 3 arcs are to be scaled in the X to match corresponding line and repositioned to match.
The problem I have if I use the progression node the arcs are scaled ok but not repositioned correctly.
If I switch to individual selection using knob works ok.
I have attached the files.
Cheers
Barry

Hi Barry
I think that's because the "BoundingBox-Infos" node cannot output the dimensions of the objects bounding box separately. So, it is not possible to scale the arcs separately.
Check the alternative nod files I've made with the "flow" and "arcCenter" nodes.

Thanks Mo,
the ScaleArcsOnX works great.(photo)
Have integrated into my nod.
Many thanks
Barry