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hist031_TRatioPlot_residual_fit.py
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## \file
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## \ingroup tutorial_hist
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## \notebook
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## Example which shows how you can get the graph of the lower plot and set the y axis range for it.
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##
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## Since the lower plot is not created until `TRatioPlot::Draw` is called, you can only use the method
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## afterwards.
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## Inspired by the tutorial of Paul Gessinger.
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##
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## \macro_image
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## \macro_code
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##
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## \author Alberto Ferro
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import
ROOT
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ROOT.gStyle.SetOptStat
(0)
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c1 =
ROOT.TCanvas
(
"c1"
,
"fit residual simple"
)
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c1.SetLogy
()
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h1 =
ROOT.TH1D
(
"h1"
,
"h1"
, 50, -5, 5)
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h1.FillRandom
(
"gaus"
, 2000)
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h1.Fit
(
"gaus"
)
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h1.SetMinimum
(0.001)
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h1.GetXaxis
().SetTitle(
"x"
)
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h1.GetYaxis
().SetTitle(
"y"
)
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rp1 =
ROOT.TRatioPlot
(h1)
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rp1.Draw
()
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rp1.GetLowerRefGraph
().SetMinimum(-2)
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rp1.GetLowerRefGraph
().SetMaximum(2)
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c1.Update
()
TRangeDynCast
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Definition
TCollection.h:358
tutorials
hist
hist031_TRatioPlot_residual_fit.py
ROOT master - Reference Guide Generated on Thu Feb 13 2025 15:59:18 (GVA Time) using Doxygen 1.10.0