{ "cells": [ { "cell_type": "markdown", "id": "f8501486", "metadata": {}, "source": [ "# pdf002_2d_pdf\n", "Example macro showing some major probability density functions in ROOT.\n", "The macro shows four of them with\n", "respect to their two variables. In order to run the macro type:\n", "\n", "```cpp\n", " root [0] .x mathcoreStatFunc.C\n", "```\n", "\n", "Original tutorial by Andras Zsenei.\n", "\n", "\n", "\n", "**Author:** Alberto Ferro \n", "This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:26 PM." ] }, { "cell_type": "code", "execution_count": 1, "id": "91504ca8", "metadata": { "collapsed": false, "execution": { "iopub.execute_input": "2026-05-19T20:26:30.296388Z", "iopub.status.busy": "2026-05-19T20:26:30.296269Z", "iopub.status.idle": "2026-05-19T20:26:31.323659Z", "shell.execute_reply": "2026-05-19T20:26:31.323216Z" } }, "outputs": [], "source": [ "import ROOT\n", "\n", "\n", "f1a = ROOT.TF2(\"f1a\",\"ROOT::Math::cauchy_pdf(x, y)\",0,10,0,10)\n", "f2a = ROOT.TF2(\"f2a\",\"ROOT::Math::chisquared_pdf(x,y)\",0,20, 0,20)\n", "f3a = ROOT.TF2(\"f3a\",\"ROOT::Math::gaussian_pdf(x,y)\",0,10,0,5)\n", "f4a = ROOT.TF2(\"f4a\",\"ROOT::Math::tdistribution_pdf(x,y)\",0,10,0,5)\n", "\n", "c1 = ROOT.TCanvas(\"c1\",\"c1\",800,650)\n", "c1.Divide(2,2)\n", "c1.cd(1)\n", "f1a.SetLineWidth(1)\n", "f1a.Draw(\"surf1\")\n", "c1.cd(2)\n", "f2a.SetLineWidth(1)\n", "f2a.Draw(\"surf1\")\n", "c1.cd(3)\n", "f3a.SetLineWidth(1)\n", "f3a.Draw(\"surf1\")\n", "c1.cd(4)\n", "f4a.SetLineWidth(1)\n", "f4a.Draw(\"surf1\")" ] }, { "cell_type": "markdown", "id": "de0a7118", "metadata": {}, "source": [ "Draw all canvases " ] }, { "cell_type": "code", "execution_count": 2, "id": "5974e986", "metadata": { "collapsed": false, "execution": { "iopub.execute_input": "2026-05-19T20:26:31.333469Z", "iopub.status.busy": "2026-05-19T20:26:31.333317Z", "iopub.status.idle": "2026-05-19T20:26:31.605638Z", "shell.execute_reply": "2026-05-19T20:26:31.605003Z" } }, "outputs": [ { "data": { "text/html": [ "\n", "\n", "
\n", "
\n", "\n", "\n", "\n" ], "text/plain": [ "" ] }, "metadata": {}, "output_type": "display_data" } ], "source": [ "from ROOT import gROOT \n", "gROOT.GetListOfCanvases().Draw()" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.12.12" } }, "nbformat": 4, "nbformat_minor": 5 }