2D KDE on root histogram

[ksmith]

This is the status as I currently understand it:

Two dimensional KDE

Hi, Sorry for the delay. We have in RooFit a n-dimensional kernel density estimator class, RooNDKeysPdf. The class is not very efficient, especially if you have a large amount of data. We are planning to have a new one based on TKDTree, but so far we did not have the resources to develop it. We are planning to allocate a student to work on this during the next summer. We will let you know as soon we have something ready to be used Best Regards Lorenzo

Maybe @moneta has an update.