Thanks for the links and suggestions. I did search the forum before my post, and I assume it is my ignorance, but I was unable to find a method that was clear to me to retrieve these values.

The method you suggested works very well. Thank you. I am still curious to learn if there is a method to get the (x,y) bin center directly from knowing the bin number.

Also what is the difference between FindBin() and FindFixBin(). From the reference materials they seem to look the same:

FindBin():

" Return Global bin number corresponding to x,y,z.

2-D and 3-D histograms are represented with a one dimensional structure. This has the advantage that all existing functions, such as GetBinContent, GetBinError, GetBinFunction work for all dimensions. This function tries to extend the axis if the given point belongs to an under-/overflow bin AND if CanExtendAllAxes() is true.

" Return Global bin number corresponding to x,y,z.

2-D and 3-D histograms are represented with a one dimensional structure. This has the advantage that all existing functions, such as GetBinContent, GetBinError, GetBinFunction work for all dimensions. This function DOES NOT try to extend the axis if the given point belongs to an under-/overflow bin.