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"# logscales\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Olivier Couet \n",
"This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:37 PM."
]
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"TCanvas *c1 = new TCanvas(\"c1\", \"Various options on LOG scales plots\", 0, 0, 700, 900);\n",
"c1->SetFillColor(30);\n",
"\n",
"TPad *pad1 = new TPad(\"pad1\", \"pad1\", 0.03, 0.62, 0.50, 0.92, 32);\n",
"TPad *pad2 = new TPad(\"pad2\", \"pad2\", 0.51, 0.62, 0.98, 0.92, 33);\n",
"TPad *pad3 = new TPad(\"pad3\", \"pad3\", 0.03, 0.02, 0.97, 0.535, 38);\n",
"pad1->Draw();\n",
"pad2->Draw();\n",
"pad3->Draw();\n",
"\n",
"TPaveLabel *title = new TPaveLabel(0.1, 0.94, 0.9, 0.98, \"Various options on LOG scales plots\");\n",
"title->SetFillColor(16);\n",
"title->SetTextFont(42);\n",
"title->Draw();\n",
"\n",
"TPaveText *pave = new TPaveText(0.1, 0.55, 0.9, 0.61);\n",
"pave->SetFillColor(42);\n",
"pave->SetTextAlign(12);\n",
"pave->SetTextFont(42);\n",
"pave->AddText(\"When more Log labels are requested, the overlapping labels are removed\");\n",
"pave->Draw();\n",
"\n",
"pad1->cd();\n",
"pad1->SetLogy();\n",
"pad1->SetGridy();\n",
"TF1 *f1 = new TF1(\"f1\", \"x*sin(x)*exp(-0.1*x)+15\", -10., 10.);\n",
"TF1 *f2 = new TF1(\"f2\", \"(sin(x)+cos(x))**5+15\", -10., 10.);\n",
"TF1 *f3 = new TF1(\"f3\", \"(sin(x)/(x)-x*cos(x))+15\", -10., 10.);\n",
"f1->SetLineWidth(1);\n",
"f1->SetLineColor(2);\n",
"f2->SetLineWidth(1);\n",
"f2->SetLineColor(3);\n",
"f3->SetLineWidth(1);\n",
"f3->SetLineColor(4);\n",
"f1->Draw();\n",
"f2->Draw(\"same\");\n",
"f3->Draw(\"same\");\n",
"f1->GetYaxis()->SetMoreLogLabels();\n",
"TPaveText *pave1 = new TPaveText(-6, 2, 6, 6);\n",
"pave1->SetFillColor(42);\n",
"pave1->SetTextAlign(12);\n",
"pave1->SetTextFont(42);\n",
"pave1->AddText(\"Log scale along Y axis.\");\n",
"pave1->AddText(\"More Log labels requested.\");\n",
"pave1->Draw();\n",
"\n",
"pad2->cd();\n",
"double x[10] = {200, 300, 400, 500, 600, 650, 700, 710, 900, 1000};\n",
"double y[10] = {200, 1000, 900, 400, 500, 250, 800, 150, 201, 220};\n",
"TGraph *g_2 = new TGraph(10, x, y);\n",
"g_2->Draw(\"AL*\");\n",
"g_2->SetMarkerColor(2);\n",
"g_2->GetYaxis()->SetMoreLogLabels();\n",
"g_2->GetYaxis()->SetNoExponent();\n",
"pad2->SetLogy();\n",
"g_2->GetXaxis()->SetMoreLogLabels();\n",
"pad2->SetLogx();\n",
"pad2->SetGridx();\n",
"TPaveText *pave2 = new TPaveText(150, 80, 500, 180);\n",
"pave2->SetFillColor(42);\n",
"pave2->SetTextFont(42);\n",
"pave2->SetTextAlign(12);\n",
"pave2->AddText(\"Log scale along X and Y axis.\");\n",
"pave2->AddText(\"More Log labels on both.\");\n",
"pave2->AddText(\"No exponent along Y axis.\");\n",
"pave2->Draw();\n",
"\n",
"pad3->cd();\n",
"pad3->SetGridx();\n",
"pad3->SetGridy();\n",
"pad3->SetLogy();\n",
"pad3->SetLogx();\n",
"TF1 *f4 = new TF1(\"f4a\", \"x*sin(x+10)+25\", 1, 21);\n",
"f4->SetLineWidth(1);\n",
"f4->Draw();\n",
"f4->SetNpx(200);\n",
"f4->GetYaxis()->SetMoreLogLabels();\n",
"f4->GetXaxis()->SetMoreLogLabels();\n",
"f4 = new TF1(\"f4b\", \"x*cos(x+10)*sin(x+10)+25\", 1, 21);\n",
"f4->SetLineWidth(1);\n",
"f4->Draw(\"same\");\n",
"f4->SetNpx(200);\n",
"Int_t a = 20;\n",
"for (int i = a; i >= 1; i--) {\n",
" f4 = new TF1(Form(\"f4b_%d\", i), \"x*sin(x+10)*[0]/[1]+25\", 1, 21);\n",
" f4->SetParameter(0, i);\n",
" f4->SetParameter(1, a);\n",
" f4->SetNpx(200);\n",
" f4->SetLineWidth(1);\n",
" f4->SetLineColor(i + 10);\n",
" f4->Draw(\"same\");\n",
" f4 = new TF1(Form(\"f4c_%d\", i), \"x*cos(x+10)*sin(x+10)*[0]/[1]+25\", 1, 25);\n",
" f4->SetParameter(0, i);\n",
" f4->SetParameter(1, a);\n",
" f4->SetNpx(200);\n",
" f4->SetLineWidth(1);\n",
" f4->SetLineColor(i + 30);\n",
" f4->Draw(\"same\");\n",
"}\n",
"TPaveText *pave3 = new TPaveText(1.2, 8, 9, 15);\n",
"pave3->SetFillColor(42);\n",
"pave3->AddText(\"Log scale along X and Y axis.\");\n",
"pave3->SetTextFont(42);\n",
"pave3->SetTextAlign(12);\n",
"pave3->AddText(\"More Log labels on both.\");\n",
"pave3->AddText(\"The labels have no exponents (they would be 0 or 1)\");\n",
"pave3->Draw();"
]
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"Draw all canvases "
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