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"# surfaces\n",
"Surfaces example\n",
"\n",
"\n",
"\n",
"\n",
"**Author:** Wim Lavrijsen \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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"execution_count": 1,
"id": "04017484",
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"shell.execute_reply": "2026-05-19T20:37:32.677540Z"
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"outputs": [],
"source": [
"from ROOT import TCanvas, TPaveText, TPad, TF2\n",
"from ROOT import gROOT, gStyle\n",
"\n",
"\n",
"\n",
"c1 = TCanvas( 'c1', 'Surfaces Drawing Options', 200, 10, 700, 900 )\n",
"c1.SetFillColor( 42 )\n",
"gStyle.SetFrameFillColor( 42 )\n",
"title = TPaveText( .2, 0.96, .8, .995 )\n",
"title.SetFillColor( 33 )\n",
"title.AddText( 'Examples of Surface options' )\n",
"title.Draw()\n",
"\n",
"pad1 = TPad( 'pad1', 'Gouraud shading', 0.03, 0.50, 0.98, 0.95, 21 )\n",
"pad2 = TPad( 'pad2', 'Color mesh', 0.03, 0.02, 0.98, 0.48, 21 )\n",
"pad1.Draw()\n",
"pad2.Draw()"
]
},
{
"cell_type": "markdown",
"id": "2d9e835e",
"metadata": {},
"source": [
"We generate a 2-D function"
]
},
{
"cell_type": "code",
"execution_count": 2,
"id": "365eca2d",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:37:32.816646Z"
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},
"outputs": [],
"source": [
"f2 = TF2( 'f2', 'x**2 + y**2 - x**3 -8*x*y**4', -1, 1.2, -1.5, 1.5 )\n",
"f2.SetContour( 48 )\n",
"f2.SetFillColor( 45 )"
]
},
{
"cell_type": "markdown",
"id": "6b61ff92",
"metadata": {},
"source": [
"Draw this function in pad1 with Gouraud shading option"
]
},
{
"cell_type": "code",
"execution_count": 3,
"id": "bb76e4f8",
"metadata": {
"collapsed": false,
"execution": {
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"shell.execute_reply": "2026-05-19T20:37:32.939946Z"
}
},
"outputs": [],
"source": [
"pad1.cd()\n",
"pad1.SetPhi( -80 )\n",
"pad1.SetLogz()\n",
"f2.Draw( 'surf4' )"
]
},
{
"cell_type": "markdown",
"id": "68a821f4",
"metadata": {},
"source": [
"Draw this function in pad2 with color mesh option"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "108575dd",
"metadata": {
"collapsed": false,
"execution": {
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"\n",
"\n",
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"\n",
"\n"
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],
"source": [
"pad2.cd()\n",
"pad2.SetTheta( 25 )\n",
"pad2.SetPhi( -110 )\n",
"pad2.SetLogz()\n",
"f2.Draw( 'surf1' )\n",
"\n",
"c1.Update()"
]
},
{
"cell_type": "markdown",
"id": "edcebdbd",
"metadata": {},
"source": [
"Draw all canvases "
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "bc7546c0",
"metadata": {
"collapsed": false,
"execution": {
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},
"metadata": {},
"output_type": "display_data"
}
],
"source": [
"from ROOT import gROOT \n",
"gROOT.GetListOfCanvases().Draw()"
]
}
],
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"kernelspec": {
"display_name": "Python 3",
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