def make_graph(a, output):
c1 = TCanvas("c1", "c1", 1000,
1000) # Creates the canvas to draw the bar chart to.
c1.SetGrid() # Adds grid lines to canvas.
leg = TLegend(0.7, 0.6, 0.95, 0.95)
leg.AddEntry(a, "Start", "P")
n0 = TNtuple("n0", "n0",
"x:y:z") # creates ntuple to store the values of x y z
n0.SetMarkerColor(0)
n0.Fill(-4500, -4500, -5700)
n0.Fill(4500, 4500, 5700)
n0.Draw("x:y:z")
#a.SetMarkerColor(1)
#a.SetMarkerStyle(6)
#a.Draw("x:y:z","","same") # Draws the histogram to the canvas.
a.SetMarkerColor(2)
a.SetMarkerStyle(6)
a.Draw("x2:y2:z2", "", "same") # Draws the histogram to the canvas.
#leg.Draw()
c1.Update() # Makes the canvas show the histogram.
img = ROOT.TImage.Create() # creates image
img.FromPad(c1) # takes it from canvas
img.WriteImage(
output) # Saves it to png file with this name in input file directory.
return c1
def make_graph(a, b, c, d, e, f, g, h, i, j, k, l, output):
c1 = TCanvas("c1", "c1", 800,
800) # Creates the canvas to draw the bar chart to.
c1.SetGrid() # Adds grid lines to canvas.
leg = TLegend(0.7, 0.6, 0.95, 0.95)
leg.AddEntry(a, "EcalBarrelHits", "P")
leg.AddEntry(b, "EcalEndcapHits", "P")
leg.AddEntry(c, "HcalBarrelHits", "P")
leg.AddEntry(d, "HcalEndcapHits", "P")
leg.AddEntry(e, "LumiCalHits", "P")
leg.AddEntry(f, "MuonBarrelHits", "P")
leg.AddEntry(g, "MuonEndcapHits", "P")
leg.AddEntry(h, "SiTrackerBarrelHits", "P")
leg.AddEntry(i, "SiTrackerEndcapHits", "P")
leg.AddEntry(j, "SiTrackerForwardHits", "P")
leg.AddEntry(k, "SiVertexBarrelHits", "P")
leg.AddEntry(l, "SiVertexEndcapHits", "P")
n0 = TNtuple("n0", "n0",
"x:y:z") # creates ntuple to store the values of x y z
n0.SetMarkerColor(0)
n0.Fill(-4500, -4500, -5700)
n0.Fill(4500, 4500, 5700)
n0.Draw("x:y:z")
a.SetMarkerColor(1)
a.SetMarkerStyle(6)
a.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
b.SetMarkerColor(2)
b.SetMarkerStyle(6)
b.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
c.SetMarkerColor(3)
c.SetMarkerStyle(6)
c.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
d.SetMarkerColor(4)
d.SetMarkerStyle(6)
d.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
e.SetMarkerColor(5)
e.SetMarkerStyle(6)
e.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
f.SetMarkerColor(6)
f.SetMarkerStyle(6)
f.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
g.SetMarkerColor(7)
g.SetMarkerStyle(6)
g.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
h.SetMarkerColor(8)
h.SetMarkerStyle(6)
h.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
i.SetMarkerColor(9)
i.SetMarkerStyle(6)
i.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
j.SetMarkerColor(30)
j.SetMarkerStyle(6)
j.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
k.SetMarkerColor(40)
k.SetMarkerStyle(6)
k.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
l.SetMarkerColor(28)
l.SetMarkerStyle(6)
l.Draw("x:y:z", "", "same") # Draws the histogram to the canvas.
leg.Draw()
c1.Update() # Makes the canvas show the histogram.
img = ROOT.TImage.Create() # creates image
img.FromPad(c1) # takes it from canvas
img.WriteImage(
output) # Saves it to png file with this name in input file directory.
return c1