So does this mean that the functionality I am looking for does not exist yet in ROOT?
If you mean fixed width versus variable bin width i understand the difference there, but I do not see how that applies to what I am saying here. In my first example ‘h1d’ I am using fixed bin widths.
For ‘h2d’ , and this is the subject of my question, I am attempting to combine the definition of a variable bin width histogram and a fixed bin width histogram. My real question is, can you use a constructor like that?