ROOT中图形格式操作的使用

ROOT中图形格式

操作的使用北京大学物理系李新ROOT的图形控制ROOT的图形控制主要通过ROOT中TStyle类的参数控制来实现ROOT启动后自动建立gStyle()的全局指针来控制画形我的方法：通过定义TStyle的指针MyStyle实现图形参数控制TStyle*MyStyle=newTStyle(“style”,”MyStyle”)

……

MyStyle.cd();使用方法在所写的宏中或程序中加入#include“MyStyle.h”在所写的宏或程序中调用函数

SetMyStyle();说明在本幻灯片中所有用绿色标定的函数中的函数参数值均为默认值TStyle中成员函数的分类和作用说明1.关于Canvas的格式操作2.关于Title的格式操作3.关于Axis的格式操作4.关于Pad的格式操作5.关于Frame的格式操作6.关于Histogram的格式操作7.关于StatBox的格式操作8.一些附加选项操作一些ROOT作图中的常用属性问题ColorFontStyleLineStyle关于Canvas的操作(1)SetCanvasBorderMode(Int_tmode=1)SetCanvasBorderSize

(Width_tsize=1)SetCanvasColor(Color_tcolor=19)InRoot,BorderModecanbeselected(1,0,-1)Asimpleexamplesin(x)/xSetCanvasBorderMode(-1);SetCanvasBorderSize(5);SetCanvasColor(33);关于Title的操作（1）SetTitleH(Float_th=0)SetTitleW(Float_tw=0)SetTitleX(Float_tx=0)SetTitleY(Float_ty=1)SetTitleX&YrepresenttheX&YvalueoftheleftdowncorneroftheTitle,H&Wrepresenttheheightandwidth.TheparameterareallinNDCform;whichrepresenttherelativeratioofthecavasSetTitleH(h=0.05);SetTitleW(w=0.15);SetTitleX(x=0.42);SetTitleY(y=0.95);关于Title的操作（2）SetTitleFont(Style_tfont=62)SetTitleTextColor(Int_tcolor=1)SetTitleBorderSize(Width_tsize=2)SetTitleColor(Int_tcolor=19)TitleBorderSizeisreferredasdarkborderofthemaintitle,TitleColorascolorofthemaintitleboxSetTitleFont(31)NoticethattitlefontappliedtobothCanvasTitleandaxistitleSetTitleTextColor(4);Again,thetextcolorweselectedappliedtoalltitles.SetTitleBorderSize(5)SetTitleColor(17)关于Axis的操作（1）SetTitleXSize(Float_tsize=0.04)SetTitleOffset(Float_toffset=1,Option_t*axis=X)Currently,Idonnotknowexacltythewhatoffsetvaluemeans.SoIwillimplementitlaterSetTitleXSize(0.03)similarlywecanuse:SetTitleYSize(0.03)WecanseethatXtitleoverlapswiththeLabel,thereforeweuseSetTitleOffset(1.5,”X”);关于Axis的操作（2）SetLabelColor(Color_tcolor=1,Option_t*axis=X)SetLabelFont(Style_tfont=62,Option_t*axis=X)SetLabelOffset(Float_toffset=0.005,Option_t*axis=X)SetLabelSize(Float_tsize=0.04,Option_t*axis=X)SetLabelColor(4,”Y”);SetLabelColor(4,”X”);SetLabelOffset(0.003,”X”)SetLabelOffset(0.003,”Y”)SetLabelSize(0.03,“X”)SetLabelSize(0.03,“Y”)关于Axis的操作（3）SetAxisColor(Color_tcolor=1,Option_t*axis=X)SetTickLength(Float_tlength=0.03,Option_t*axis=X)SetNdivisions(Int_tn=510,Option_t*axis=X)ParametersinSetNDivsisions(n=N1+100*N2+10000*N3N1=numberofprimarydivisions.N2=numberofsecondarydivisions.N3=numberof3rddivisions.)SetAxisColor(4,”X”)SetAxisColor(4,”Y”)SetTickLength(0.01,”X”)SetTickLength(0.01,”Y”)SetNdivisions(1010,X)Itisusefultodothiswhenyouneedtofindlocatesomepointonthegraph关于PAD的操作SetPadTopMargin(Float_tmargin=0.1)SetPadBottomMargin(Float_tmargin=0.1)SetPadLeftMargin(Float_tmargin=0.1）SetPadRightMargin(Float_tmargin=0.1)（Ps:WhenthereisnoPaddefinedintheCanvas,theCanvasitselfthusbeconsideredasaPad）Forexample,whenweneedtohavemarginononesideofthecanvasforotherpurpose,say,leftside.ThenwecanletSetPadLeftMargin(0.3)关于Frame的操作SetFrameBorderMode(Int_tmode=1)SetFrameBorderSize(Width_tsize=1)SetFrameFillColor(Color_tcolor=1)SetFrameLineColor(Color_tcolor=1)SetFrameLineStyle(Style_t

styl=0)SetFrameLineWidth(Width_twidth=1)SetFrameFillColor(33)WeadoptthesamecolorasCanvasSetFrameLineColor(4)SetFrameLineStyle(1)SetFrameLineWidth(1)SetFrameBorderMode(-1)SetFrameBorderSize(3)Itisalmostdonenow!!!SetFuncColor(4)SetPadGridX(1)SetPadGridY(1)Here,itspossibletoadjustGridStyle(as

LineStyle)Also,itspossibletosetfunctionlinecolorandwidthFurtherDetailedinformationcanbefoundinMyStyle.hWell,thePictureisnowdifferentinStyle.Letusseeanotherpicture.HeretheMethodisaddedandthepicturehasthestyleIsetbefore.关于Histogram的操作SetHistFillColor(Color_tcolor=1)SetHistLineColor(Color_tcolor=1)SetHistLineStyle(Style_t

styl

=0)SetHistLineWidth(Width_twidth=1)HereLineandFillattributesarethesameasFrameLineattributes.SetHistFillColor(38)关于StatBox的操作(1)SetOptStat(mode)Theparametermodecanbe=iourmen(default=0001111)n=1;nameofhistogramisprintede=1;numberofentriesprintedm=1;meanvalueprintedr=1;rmsprintedu=1;numberofunderflowsprintedo=1;numberofoverflowsprintedi=1;integralofbinsprintedSetOptStat(1111111)关于StatBox的操作(2)SetStatX(Float_tx=0)SetStatY(Float_ty=0)SetStatW(Float_tw=0.19)SetStatH(Float_ty=0.1)TheXYWHaresameasTitle关于StatBox的操作(3)

SetStatBorderSize(Width_tsize=2)

SetStatColor(Int_tcolor=19)

SetStatFont(Style_tfont=62)

SetStatFontSize(Float_tsize=0)

SetStatFormat(const

char*format=6.4g)InFormat6representsthemargin,0.4representsFontSizeCurrentlythereisstillbugsinRoot,sotheonlywaytoutilizeitistoprint

gStyle->*inyourprogramme附加选项操作(1)SetOptLogx(Int_t

logx

=0)SetOptLogy(Int_tlogy=0)SetOptLogz(Int_t

logz

=0)SetOptTitle(Int_ttit=1)HereWhenyouSelect1,itmeanstrue.SetOptX(1)SetOptTitle(0)Thennoticethechangeofthepicture附加选项操作（2）SetOptDate(Int_tmode)mode=1(default)dateisprintedinthebottom/leftcorner.mode=2dateisprintedinthebottom/rightcorner.mode=3dateisprintedinthetop/rightcorner.SetOptDate(1)附加选项操作（2）Thedatepositioncanalsobecontrolledby:gStyle->SetDateX(x);xinNDCgStyle->SetDateY(y);yinNDCThedatetextattributescanbechangedwith:gStyle->GetAttDate()->SetTextFont(font=62);gStyle->GetAttDate()->SetTextSize(size=0.025);gStyle->GetAttDate()->SetTextColor(color=1);

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lixin@

ThankyouColorisselectedfrom1-50,thecolorcanbeselectedwithitsnumberinrootfromleftdowncornertorightupcorner.font:Textfontcode=10*fontnumber+precisionFontnumbersmustbebetween1and14precision=1fasthardwarefonts(stepsinthesize)precision=2scalableandrotatablehardwarefontsThedefaultfontnumberis62.Fontsize:0-0.15(0.15isthebiggestusually)FontAlign:9possiblecandidates…FontIDX11Win32TTFlfItalic

lfWeightx101:times-medium-i-normal"TimesNewRoman"142:times-bold-r-normal"TimesNewRoman"073:times-bold-i-normal"TimesNewRoman“174:helvetica-medium-r-normal"Arial"045:hel