{ "cells": [ { "cell_type": "markdown", "id": "d6b4d86f", "metadata": {}, "source": [ "# ChebyshevPol\n", "Example of Chebyshev polynomials\n", "using TFormula pre-defined definitions of chebyshev polynomials.\n", "\n", "\n", "\n", "\n", "**Author:** Lorenzo Moneta \n", "This notebook tutorial was automatically generated with ROOTBOOK-izer from the macro found in the ROOT repository on Tuesday, May 19, 2026 at 08:24 PM." ] }, { "cell_type": "code", "execution_count": 1, "id": "43bd8300", "metadata": { "collapsed": false, "execution": { "iopub.execute_input": "2026-05-19T20:24:18.752020Z", "iopub.status.busy": "2026-05-19T20:24:18.751847Z", "iopub.status.idle": "2026-05-19T20:24:19.272501Z", "shell.execute_reply": "2026-05-19T20:24:19.271619Z" } }, "outputs": [ { "name": "stderr", "output_type": "stream", "text": [ "Info in : created default TCanvas with name c1\n" ] } ], "source": [ "auto legend = new TLegend(0.88,0.4,1.,1.);\n", "\n", "int colors[] = { kRed, kRed+3, kMagenta, kMagenta+3, kBlue, kBlue+3, kCyan+3, kGreen, kGreen+3, kYellow, kOrange };\n", "\n", "for (int degree=0; degree <=10; ++degree) {\n", " auto f1 = new TF1(\"f1\",TString::Format(\"cheb%d\",degree),-1,1);\n", " // all parameters are zero apart from the one corresponding to the degree\n", " f1->SetParameter(degree,1);\n", " f1->SetLineColor( colors[degree]);\n", " f1->SetMinimum(-1.2);\n", " f1->SetMaximum(1.2);\n", " TString opt = (degree == 0) ? \"\" : \"same\";\n", " //f1->Print(\"V\");\n", " f1->SetNpx(1000);\n", " f1->SetTitle(\"Chebyshev Polynomial\");\n", " f1->Draw(opt);\n", " legend->AddEntry(f1,TString::Format(\"N=%d\",degree),\"L\");\n", "}\n", "legend->Draw();" ] }, { "cell_type": "markdown", "id": "d6556afb", "metadata": {}, "source": [ "Draw all canvases " ] }, { "cell_type": "code", "execution_count": 2, "id": "e85c0794", "metadata": { "collapsed": false, "execution": { "iopub.execute_input": "2026-05-19T20:24:19.274124Z", "iopub.status.busy": "2026-05-19T20:24:19.273995Z", "iopub.status.idle": "2026-05-19T20:24:19.591007Z", "shell.execute_reply": "2026-05-19T20:24:19.590640Z" } }, "outputs": [ { "data": { "text/html": [ "\n", "\n", "
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