{
"cells": [
{
"cell_type": "markdown",
"id": "6a644d01",
"metadata": {},
"source": [
"# xyplot\n",
"centered at (0,0).\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."
]
},
{
"cell_type": "code",
"execution_count": 1,
"id": "4692b6a8",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:38.092161Z",
"iopub.status.busy": "2026-05-19T20:37:38.092050Z",
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"shell.execute_reply": "2026-05-19T20:37:38.441890Z"
}
},
"outputs": [],
"source": [
"TCanvas *c = new TCanvas(\"c\", \"XY plot\", 200, 10, 700, 500);"
]
},
{
"cell_type": "markdown",
"id": "dfdd3be4",
"metadata": {},
"source": [
"Remove the frame"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "8d2886de",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:38.444518Z",
"iopub.status.busy": "2026-05-19T20:37:38.444390Z",
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"shell.execute_reply": "2026-05-19T20:37:38.655437Z"
}
},
"outputs": [],
"source": [
"c->SetFillColor(kWhite);\n",
"c->SetFrameLineColor(kWhite);\n",
"c->SetFrameBorderMode(0);"
]
},
{
"cell_type": "markdown",
"id": "b2df2373",
"metadata": {},
"source": [
"Define and draw a curve the frame"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "dade5ff5",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:38.657991Z",
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"shell.execute_reply": "2026-05-19T20:37:38.867394Z"
}
},
"outputs": [],
"source": [
"const Int_t n = 4;\n",
"Double_t x[n] = {-1, -3, -9, 3};\n",
"Double_t y[n] = {-1000, 900, 300, 300};\n",
"TGraph *gr = new TGraph(n, x, y);\n",
"gr->SetTitle(\"XY plot\");\n",
"gr->SetMinimum(-1080);\n",
"gr->SetMaximum(1080);\n",
"gr->SetLineColor(kRed);\n",
"gr->Draw(\"AC*\");"
]
},
{
"cell_type": "markdown",
"id": "d7b40ee7",
"metadata": {},
"source": [
"Remove the frame's axis"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "6b09a475",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:37:39.093447Z"
}
},
"outputs": [
{
"data": {
"text/html": [
"\n",
"\n",
"\n",
"
\n",
"\n",
"\n",
"\n"
],
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]
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"metadata": {},
"output_type": "display_data"
}
],
"source": [
"gr->GetHistogram()->GetYaxis()->SetTickLength(0);\n",
"gr->GetHistogram()->GetXaxis()->SetTickLength(0);\n",
"gr->GetHistogram()->GetYaxis()->SetLabelSize(0);\n",
"gr->GetHistogram()->GetXaxis()->SetLabelSize(0);\n",
"gr->GetHistogram()->GetXaxis()->SetAxisColor(0);\n",
"gr->GetHistogram()->GetYaxis()->SetAxisColor(0);\n",
"\n",
"gPad->Update();"
]
},
{
"cell_type": "markdown",
"id": "eea0f1c7",
"metadata": {},
"source": [
"Draw orthogonal axis system centered at (0,0).\n",
"Draw the Y axis. Note the 4th label is erased with SetLabelAttributes"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "3e1ca390",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:39.099422Z",
"iopub.status.busy": "2026-05-19T20:37:39.099297Z",
"iopub.status.idle": "2026-05-19T20:37:39.329041Z",
"shell.execute_reply": "2026-05-19T20:37:39.320612Z"
}
},
"outputs": [],
"source": [
"TGaxis *yaxis = new TGaxis(0, gPad->GetUymin(), 0, gPad->GetUymax(), gPad->GetUymin(), gPad->GetUymax(), 6, \"+LN\");\n",
"yaxis->ChangeLabel(4, -1, 0.);\n",
"yaxis->Draw();"
]
},
{
"cell_type": "markdown",
"id": "c54e3de0",
"metadata": {},
"source": [
"Draw the Y-axis title."
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "50a1c701",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:39.330975Z",
"iopub.status.busy": "2026-05-19T20:37:39.330847Z",
"iopub.status.idle": "2026-05-19T20:37:39.542834Z",
"shell.execute_reply": "2026-05-19T20:37:39.542132Z"
}
},
"outputs": [],
"source": [
"TLatex *ytitle = new TLatex(-0.5, gPad->GetUymax(), \"Y axis\");\n",
"ytitle->Draw();\n",
"ytitle->SetTextSize(0.03);\n",
"ytitle->SetTextAngle(90.);\n",
"ytitle->SetTextAlign(31);"
]
},
{
"cell_type": "markdown",
"id": "b1ce9244",
"metadata": {},
"source": [
"Draw the X axis"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "edea1ac0",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:39.552223Z",
"iopub.status.busy": "2026-05-19T20:37:39.552093Z",
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"shell.execute_reply": "2026-05-19T20:37:39.763124Z"
}
},
"outputs": [],
"source": [
"TGaxis *xaxis = new TGaxis(gPad->GetUxmin(), 0, gPad->GetUxmax(), 0, gPad->GetUxmin(), gPad->GetUxmax(), 510, \"+L\");\n",
"xaxis->Draw();"
]
},
{
"cell_type": "markdown",
"id": "385edffd",
"metadata": {},
"source": [
"Draw the X axis title."
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "1791d632",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:39.773919Z",
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"shell.execute_reply": "2026-05-19T20:37:39.985399Z"
}
},
"outputs": [],
"source": [
"TLatex *xtitle = new TLatex(gPad->GetUxmax(), -200., \"X axis\");\n",
"xtitle->Draw();\n",
"xtitle->SetTextAlign(31);\n",
"xtitle->SetTextSize(0.03);"
]
},
{
"cell_type": "markdown",
"id": "83505a1f",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 9,
"id": "c8f2462c",
"metadata": {
"collapsed": false,
"execution": {
"iopub.execute_input": "2026-05-19T20:37:39.987757Z",
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"iopub.status.idle": "2026-05-19T20:37:40.203239Z",
"shell.execute_reply": "2026-05-19T20:37:40.202630Z"
}
},
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"metadata": {},
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}
],
"source": [
"gROOT->GetListOfCanvases()->Draw()"
]
}
],
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