I have a root file that that I have to analyse.
bottom = ROOT.TFile(“202001081411_r750_W2-I8-1_pin4_RedBottom_Tune30.dat.root”)
tree_bottom = bottom.Get(“edge”)
c=ROOT.TCanvas()
tree_bottom.Draw(“volt-BlineMean:time-atleft”,“Vbias==30”,“l”)
tree_bottom.SetLineWidth(1)
c.Draw()
I got this plot.
http://i.imgur.com/RvTta3y.png
How can i change the label of the axes.
I tired this
bottom_tree.GetXaxis().SetTitle(“x-something”)
but i get an error “‘TTree’ object has no attribute 'GetXaxis”
And I would also like to do a polynomial fitting
func = ROOT.TF1(‘func’, '[0] + [1]*x ', 0, 10)
How can i implied this fitting function into data set ?
ROOT Version: PyRoot
Platform: Python
Compiler: Not Provided