I was trying to retrieve the integral of a
THnD but I don’t find the right method.
Of course, I could project to a
TH1D and calculate the integral as follows:
TH1D *h1 = hnd->Projection(0);
But, I tried to find a method doing the same in the documentation of THnD, and I didn’t find. There is no method to retrieve the integral directly from the
thanks for your question! No, there is no method to do this directly. But given that you have a workaround, is it really necessary that there is a function at this point? Even iterating over bins and summing them manually would not be that complicated.
If you really think this feature is needed, feel free to open a GitHub issue and suggest a new interface! But since you have a workaround already for your use case, that issue would probably not get top priority from the ROOT developers themselves. But since it’s not so complicated, it could be a nice one to be picked up by a first-time contributor for practice!
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