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hist036_TH2_labels.C File Reference
Tutorials
»
Histograms tutorials
Detailed Description
2-D histograms with alphanumeric labels.
TCanvas
*
hist036_TH2_labels
()
{
const
Int_t
nx
= 12;
const
Int_t
ny
= 20;
const
char
*
month
[
nx
] = {
"January"
,
"February"
,
"March"
,
"April"
,
"May"
,
"June"
,
"July"
,
"August"
,
"September"
,
"October"
,
"November"
,
"December"
};
const
char
*
people
[
ny
] = {
"Jean"
,
"Pierre"
,
"Marie"
,
"Odile"
,
"Sebastien"
,
"Fons"
,
"Rene"
,
"Nicolas"
,
"Xavier"
,
"Greg"
,
"Bjarne"
,
"Anton"
,
"Otto"
,
"Eddy"
,
"Peter"
,
"Pasha"
,
"Philippe"
,
"Suzanne"
,
"Jeff"
,
"Valery"
};
TCanvas
*
c1
=
new
TCanvas
(
"c1"
,
"demo bin labels"
, 10, 10, 600, 600);
c1
->SetGrid();
c1
->SetLeftMargin(0.15);
c1
->SetBottomMargin(0.15);
TH2F
*
h
=
new
TH2F
(
"h"
,
"test"
, 3, 0, 3, 2, 0, 2);
h
->SetCanExtend(
TH1::kAllAxes
);
h
->SetStats(0);
gRandom
->
SetSeed
();
for
(
Int_t
i = 0; i < 15000; i++) {
Int_t
rx =
gRandom
->
Rndm
() *
nx
;
Int_t
ry =
gRandom
->
Rndm
() *
ny
;
h
->Fill(
people
[ry],
month
[rx], 1);
}
h
->LabelsDeflate(
"X"
);
h
->LabelsDeflate(
"Y"
);
h
->LabelsOption(
"v"
);
h
->Draw(
"text"
);
TPaveText
*
pt
=
new
TPaveText
(0.6, 0.85, 0.98, 0.98,
"brNDC"
);
pt
->
SetFillColor
(18);
pt
->
SetTextAlign
(12);
pt
->
AddText
(
"Use the axis Context Menu LabelsOption"
);
pt
->
AddText
(
" \"a\" to sort by alphabetic order"
);
pt
->
AddText
(
" \">\" to sort by decreasing values"
);
pt
->
AddText
(
" \"<\" to sort by increasing values"
);
pt
->
Draw
();
return
c1
;
}
h
#define h(i)
Definition
RSha256.hxx:106
Int_t
int Int_t
Definition
RtypesCore.h:45
TRangeDynCast
ROOT::Detail::TRangeCast< T, true > TRangeDynCast
TRangeDynCast is an adapter class that allows the typed iteration through a TCollection.
Definition
TCollection.h:358
gRandom
R__EXTERN TRandom * gRandom
Definition
TRandom.h:62
ROOT::Detail::TRangeCast
Definition
TCollection.h:311
TAttFill::SetFillColor
virtual void SetFillColor(Color_t fcolor)
Set the fill area color.
Definition
TAttFill.h:38
TAttText::SetTextAlign
virtual void SetTextAlign(Short_t align=11)
Set the text alignment.
Definition
TAttText.h:44
TCanvas
The Canvas class.
Definition
TCanvas.h:23
TH1::kAllAxes
@ kAllAxes
Definition
TH1.h:76
TH2F
2-D histogram with a float per channel (see TH1 documentation)
Definition
TH2.h:307
TPaveText
A Pave (see TPave) with text, lines or/and boxes inside.
Definition
TPaveText.h:21
TPaveText::AddText
virtual TText * AddText(Double_t x1, Double_t y1, const char *label)
Add a new Text line to this pavetext at given coordinates.
Definition
TPaveText.cxx:190
TPaveText::Draw
void Draw(Option_t *option="") override
Draw this pavetext with its current attributes.
Definition
TPaveText.cxx:241
TRandom::SetSeed
virtual void SetSeed(ULong_t seed=0)
Set the random generator seed.
Definition
TRandom.cxx:615
TRandom::Rndm
Double_t Rndm() override
Machine independent random number generator.
Definition
TRandom.cxx:559
pt
TPaveText * pt
Definition
entrylist_figure1.C:7
c1
return c1
Definition
legend1.C:41
Date
July 2016
Author
Rene Brun
Definition in file
hist036_TH2_labels.C
.
tutorials
hist
hist036_TH2_labels.C
ROOT master - Reference Guide Generated on Thu Feb 13 2025 15:59:31 (GVA Time) using Doxygen 1.10.0