Hello Pilou,

I think that Maxs new interpolation node will solve the problem. I think that is similar to the reMap node in my last Infonodes (splineinterpolation) that I have written for test purposes (Max have linear, Catmull, ... modes too!). You will choose some values (min 2) and give a number of values you want to interpolate between them. Your output is a spline interpolation between them.

Have a nice day
Karsten