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"# hist020_TH2_draw\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Rene Brun \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:12 PM."
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"gStyle->SetOptStat(0);\n",
"gStyle->SetCanvasColor(33);\n",
"gStyle->SetFrameFillColor(18);\n",
"TF2 *f2 = new TF2(\"f2\", \"xygaus + xygaus(5) + xylandau(10)\", -4, 4, -4, 4);\n",
"Double_t params[] = {130, -1.4, 1.8, 1.5, 1, 150, 2, 0.5, -2, 0.5, 3600, -2, 0.7, -3, 0.3};\n",
"f2->SetParameters(params);\n",
"auto h2 = new TH2F(\"h2\", \"xygaus + xygaus(5) + xylandau(10)\", 20, -4, 4, 20, -4, 4);\n",
"h2->SetFillColor(46);\n",
"h2->FillRandom(\"f2\", 40000);\n",
"TPaveLabel pl;"
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"source": [
"basic 2-d options"
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"source": [
"Float_t xMin = 0.67, yMin = 0.875, xMax = 0.85, yMax = 0.95;\n",
"Int_t cancolor = 17;\n",
"auto c2h = new TCanvas(\"c2h\", \"2-d options\", 10, 10, 800, 600);\n",
"c2h->Divide(2, 2);\n",
"c2h->SetFillColor(cancolor);\n",
"c2h->cd(1);\n",
"h2->Draw();\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"SCAT\", \"brNDC\");\n",
"c2h->cd(2);\n",
"h2->Draw(\"box\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"BOX\", \"brNDC\");\n",
"c2h->cd(3);\n",
"h2->Draw(\"arr\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"ARR\", \"brNDC\");\n",
"c2h->cd(4);\n",
"h2->Draw(\"colz\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"COLZ\", \"brNDC\");\n",
"c2h->Update();"
]
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"metadata": {},
"source": [
"text option"
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"auto ctext = new TCanvas(\"ctext\", \"text option\", 50, 50, 800, 600);\n",
"gPad->SetGrid();\n",
"ctext->SetFillColor(cancolor);\n",
"ctext->SetGrid();\n",
"h2->Draw(\"text\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"TEXT\", \"brNDC\");\n",
"ctext->Update();"
]
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"metadata": {},
"source": [
"contour options"
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"auto cont = new TCanvas(\"contours\", \"contours\", 100, 100, 800, 600);\n",
"cont->Divide(2, 2);\n",
"gPad->SetGrid();\n",
"cont->SetFillColor(cancolor);\n",
"cont->cd(1);\n",
"h2->Draw(\"contz\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"CONTZ\", \"brNDC\");\n",
"cont->cd(2);\n",
"gPad->SetGrid();\n",
"h2->Draw(\"cont1\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"CONT1\", \"brNDC\");\n",
"cont->cd(3);\n",
"gPad->SetGrid();\n",
"h2->Draw(\"cont2\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"CONT2\", \"brNDC\");\n",
"cont->cd(4);\n",
"gPad->SetGrid();\n",
"h2->Draw(\"cont3\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"CONT3\", \"brNDC\");\n",
"cont->Update();"
]
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"source": [
"lego options"
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"auto lego = new TCanvas(\"lego\", \"lego options\", 150, 150, 800, 600);\n",
"lego->Divide(2, 2);\n",
"lego->SetFillColor(cancolor);\n",
"lego->cd(1);\n",
"h2->Draw(\"lego\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"LEGO\", \"brNDC\");\n",
"lego->cd(2);\n",
"h2->Draw(\"lego1\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"LEGO1\", \"brNDC\");\n",
"lego->cd(3);\n",
"gPad->SetTheta(61);\n",
"gPad->SetPhi(-82);\n",
"h2->Draw(\"surf1pol\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax + 0.05, yMax, \"SURF1POL\", \"brNDC\");\n",
"lego->cd(4);\n",
"gPad->SetTheta(21);\n",
"gPad->SetPhi(-90);\n",
"h2->Draw(\"surf1cyl\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax + 0.05, yMax, \"SURF1CYL\", \"brNDC\");\n",
"lego->Update();"
]
},
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"id": "c203b15d",
"metadata": {},
"source": [
"surface options"
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"auto surf = new TCanvas(\"surfopt\", \"surface options\", 200, 200, 800, 600);\n",
"surf->Divide(2, 2);\n",
"surf->SetFillColor(cancolor);\n",
"surf->cd(1);\n",
"h2->Draw(\"surf1\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"SURF1\", \"brNDC\");\n",
"surf->cd(2);\n",
"h2->Draw(\"surf2z\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"SURF2Z\", \"brNDC\");\n",
"surf->cd(3);\n",
"h2->Draw(\"surf3\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"SURF3\", \"brNDC\");\n",
"surf->cd(4);\n",
"h2->Draw(\"surf4\");\n",
"pl.DrawPaveLabel(xMin, yMin, xMax, yMax, \"SURF4\", \"brNDC\");\n",
"surf->Update();"
]
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"source": [
"Draw all canvases "
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