Hi, I am looking for a class similar to TGraph, which would not create a private copy of X and Y arrays but rather works on X,Y arrays which are provided by the user. Such a way that I do not need to create a new TGraph object when (all) values in user's X or Y change. (Using SetPoint(n,x,y) and Modified() and looping over n entries is too slow). Or is there a faster way to tell and update TGraph when all values have changed? cheers Dirk
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