Sec the x axis of a 2D histogram

ROOT
1

Hi all,

I have a 2D Histogram of Luminosity against Angle (in degrees) stored in a root file, is there any way to plot this histogram with Luminosity vs sec(angle)? The main problem I am having is that I dont have the original data of the histogram, so I can just plot a new histogram from the old one. Many thanks.

Eunice

2 
 I dont have the original data of the histogram

You have all the tools to get the bins’ contents. But may be that’s not enough to
build a new histogram.