WebDec 8, 2010 · Hi all, I’ve been given some data to plot stored in a ROOT file, in the form of a TGraphErrors (which I open in my program as upData), but the y-values (and hence y … WebROOT master. Reference Guide : graphShade.C File Reference. Tutorials » Graphs tutorials. ... A TGraph is an object made of two arrays X and Y with npoints each. Definition: TGraph.h:41. TGraph::SetPoint. virtual void SetPoint(Int_t i, Double_t x, Double_t y) Set x and y values for point number i. Definition: TGraph.cxx:2325.
Drawing graph from a text file by skipping 1st 47 rows in CERN ROOT
WebNov 22, 2013 · I am using C Scripting with the root command line to create a graph from a TNtuple and I have formatted everything else properly by using the TStyle and TGaxis classes to set the rest of the parameters. ... TGraph g; g.SetPoint(0, 1, 1); g.SetPoint(1, 2, 2); g.Draw("APL"); g.GetXaxis()->SetTitle("my title"); g.GetXaxis()->CenterTitle WebJan 1, 2004 · In reply to: Jeff Hartnell: "Re: [ROOT] TGraph & SetMinimum". Hi Jeff, Thanks for reporting this interesting sequence. I have fixed this problem in the CVS version. Meanwhile, you can solve this problem by updating the canvas after having drawn the 3rd plot //third plot c->cd (3); g3->Draw ("AP"); c->Update (); //add this line The problem is ... doing acca
ROOT: TMultiGraph Class Reference
Web4. After you open your file with: root -l filename.root. you can draw a TGraph with: myGraph->Draw ("apl"); or with other options like: myGraph->Draw ("Hist"); the important thing is to … WebAug 20, 2015 · Thank you very much for the answer. I made changes which you suggested. Now root says only //Error: Can't call TGraphErrors::SetPointErrors(i,Data[2][i],Data[3][i]) in current scope plot2.C:92: Possible candidates are... (in TGraphErrors) (in TGraph)/// The same errors for x and y in this example because it's test, in reality i need only dy. WebPh. von Doetinchem ROOT – A Data Analysis Framework April 2009 – p. 2 Overview • general concepts • interactive use, macros, compiled scripts • canvas and style • histograms and graphs • fitting doing a bar chart in excel