Interactively Draw a Graph



In [1]:

    
import ROOT









    



Welcome to JupyROOT 6.10/06



In [2]:

    
c = ROOT.TCanvas()

The simple graph



In [3]:

    
g = ROOT.TGraph()
for i in range(5): g.SetPoint(i,i,i*i)
g.Draw("APL")
c.Draw()

Change marker style, colour as well as line colour and thickness. Make the plot interactive. Re-draw the plot and interact with it!



In [4]:

    
%jsroot on
g.SetMarkerStyle(ROOT.kFullTriangleUp)
g.SetMarkerSize(3)
g.SetMarkerColor(ROOT.kAzure)
g.SetLineColor(ROOT.kRed - 2)
g.SetLineWidth(2)
g.SetLineStyle(3)
c.Draw()

Now we set the title and the grid on the canvas.



In [5]:

    
g.SetTitle("My Graph;The X;My Y")
c.SetGrid()
c.Draw()

We will now add the symbol of the Calcium isotope



In [6]:

    
txt = "#color[804]{My text #mu {}^{40}_{20}Ca}"
l = ROOT.TLatex(.2, 10, txt)
l.Draw() 
c.Draw()

Redraw using a Y axis in log scale.



In [7]:

    
c.SetLogy()
c.Draw()