Dear experts, I want to get the max and min value along the y axis in my graph, but when I used the GetMinimum() and GetMaximum() methods both return -1111. Isn’t it suppose to return the min and max value. Here [1] is a piece of code, could you please tell me if something is wrong? I’m using ROOT…

couet September 1, 2015, 10:44am 2

Hi, I would like to get the minimum and maximum value of a Graph. I see that there is a function Getmaximum and minimum in TGraph but it always gives -1111. I have modified a tutorial example to illustrate this. I’m doing something wrong? Juan exclusiongraph.C (2.51 KB)

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GraphErrors *graph ->GetMax/Min()