I need to perform an linear interpolation over a 4 dimensions map.
My map is basically a 3D space (x,y,z) joined to an energy dimension ==> f(x,y,z,E)=value
I have discrete points on that map and I would like to interpolate it to have a value for all the coordinates.
Well for now I have just read my text file containing that map :
TTree *MyTree = new TTree("MyTree", "MyTree"); MyTree->ReadFile("all.txt", "X/I:E/I:alpha/D");
Would you happen by any chance to know whether such an function already exist in ROOT ?
I saw that the TH2F contain a method interpolation but my 4 dimensions datas won’t fit in a TH2F.
Now I found that link on GitHub with examples using #include “Math/Interpolator.h” but it is applied to 2 dimensions interpolation.
Thank you. P.