Hello,
I’m drawing some overlay-ed histograms (two histogram in one) like you can see in the attached image
How can i change the red curve from marks to a lines bars with pyroot?. The histograms are TEfficiency class, so there is less direct methods to do this.
Thanks in advance
Please read tips for efficient and successful posting and posting code
_ROOT Version: 6.26/08
_Platform: Linux 20.04 LTS
_Compiler: python 3.8.10
Try to Draw your plots using option “L” .
Hello,
The option “L” does not work property to my. i get this
but i want this format (type of curve)
If you send a small reproducer we could help you more efficiently.
Hello,
This is the function that i use to write the overlayed histograms.
def overplot(h1,h2,spec1,spec2,opath,n):
c1 = R.TCanvas()
c1.SetTickx()
c1.SetTicky()
c1.SetLeftMargin(0.1)
c1.SetRightMargin(0.18)
if h1.IsA().InheritsFrom("TEfficiency") == True and h2.IsA().InheritsFrom("TEfficiency") == True:
# h1.SetMarkerStyle(24)
h2.SetMarkerStyle(25)
# h1.SetMarkerColorAlpha(R.kBlack,0.99)
h2.SetMarkerColorAlpha(R.kBlue,0.8)
# h1.SetLineColor(R.kBlack)
h2.SetLineColor(R.kBlue)
h11=h1.GetPassedHistogram()
h22=h2.GetPassedHistogram()
chi2=h11.Chi2Test(h22,"UU")
# h1.GetListOfFunctions().AddFirst(hh1)
latex=R.TLatex()
latex.SetTextSize(0.05)
if h1.GetName()=="EffHLT_tauPt_wrt_Offline":
c1.DrawFrame(0,0,350,1.5)
latex.DrawLatex(30,1.25,"#chi^{2}="+str(chi2)[0:7])
elif h1.GetName()=="EffHLT_averageMu_wrt_Offline":
c1.DrawFrame(0,0.2,65,1.4)
elif h1.GetName()=="EffHLT_tauEta_wrt_Offline":
c1.DrawFrame(-3.5,0.65,3.5,1.25)
elif h1.GetName()=="EffHLT_tauPhi_wrt_Offline":
c1.DrawFrame(-3.5,0.72,3.5,1.25)
elif h1.GetName()=="EffHLT_tauPt_coarse_wrt_Offline":
c1.DrawFrame(0,0.65,550,1.4)
h1.Draw("HIST")
h2.Draw("SAME1")
if h1.GetName()=="EffHLT_tauPt_wrt_Offline":
h3=R.TLine(n,0,n,1.1)
h3.SetLineColor(R.kRed)
h3.Draw("SAME1")
legend=R.TLegend(0.38,0.7,0.8,0.85)
legend.AddEntry(h1,spec1,"LEP")
legend.AddEntry(h2,spec2,"LEP")
legend.SetBorderSize(0)
legend.Draw()
c1.Print(opath+"/"+h1.GetName()+".png")
elif h1.InheritsFrom("TTree")==False and h2.InheritsFrom("TTree")==False:
h1.SetFillColor(R.kRed)
h2.SetFillColor(R.kBlue)
if h1.GetMaximumBin()>h2.GetMaximumBin():
h1.Draw("SAME4")
h2.Draw("SAME4")
else:
h2.Draw("SAME4")
h1.Draw("SAME4")
legend=R.TLegend(0.6,0.9,1,1)
legend.AddEntry(h1,spec1,"L")
legend.AddEntry(h2,spec2,"L")
legend.Draw()
hist_name = opath+h1.GetName()+".png"
c1.Print(opath+"/"+h1.GetName()+".png")
c1.Update()
c1.Clear()
return
it’ would be great to get the curve like in the previous comment.
h1.Draw("HIST L")
it does not look nice
how can avoid the vertical lines of uncertainty?
Ok, can you put in a ROOT file the two histograms you are plotting and I will look ?
Hello @couet ,
Here it is.
file_output.root (5.7 KB)
Cheers
does someone know how to retrieve histogram date from the TEfficiency histogram and calculate the Xi2Square test between both? (with python)
Your objects are not histogram but TEfficiency. The drawing is done as said in the section VI.3 in the TEfficiency documentation.
Hello,
I don’t need just drawing. I want to change the curve style. is there any pyroot documentation about it?
Cheers
The drawing option are those defined for TGraphAsymmErrors according to the section of the doc I pointed. Go there and see what is available “HIST” is not an option and TGraphAsymmErrors are always drawn weith errors bars.
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.