Hello, I am trying to read a file with 9 columns to create an TGraphAsymmErrors.
I was using:
but it is getting too complicated and the code wasn’t working. I want to read all 9 columns. Can someone tell me an easier way to do this?
ps.: I also want to have the values of the graph to calculate some other quantities, so it’s not useful to use:
TGraph MyGraph = new TGraph(“MyData.txt”);
because I need the data.
You can easily retrieve the data in a TGraph using GetX and GetY
You may also want to investigate TTree::ReadFile.
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