RooDataHist trilinear interpolation

I have implemented a tri-linear interpolation for 3D RooDataHist, adapting the code from the analogous interpolation in TH3, where such interpolation is available.

I’m using it in an analysis and it seems to work as intended, so I’m sharing the code here in case someone else might need it, or if the RooFit developers might want to include it in some future release.

RooDataHist.cxx (70.2 KB)

Thank you.