Links

• SLAC WB 1
• SLAC WB 2
• ROOT at FNAL

Example Code

Generate Working Class Dictionary

• Location: mwlebour@bourge:~/work/cms/surfturf/pass2/rootTest

Generic Useful Info

gROOT

• gROOT->LoadMacro(const char * filename)
  • Equivalent to .L filename

Useful Histogramming Options

gStyle Commands

void SetOptFit(Int_t mode)

• mode = pcev (default = 0111)
  • p - Probability
  • c - Chisquare/Number of degress of freedom
  • e - Errors (if e=1, v must be 1)
  • v - Name/values of parameters

void SetOptStat(Int_t mode)

• mode = ksiourmen (default = 000001111)
  • k = 1; kurtosis printed
  • k = 2; kurtosis and kurtosis error printed
  • s = 1; skewness printed
  • s = 2; skewness and skewness error printed
  • i = 1; integral of bins printed
  • o = 1; number of overflows printed
  • u = 1; number of underflows printed
  • r = 1; rms printed
  • r = 2; rms and rms error printed
  • m = 1; mean value printed
  • m = 2; mean and mean error values printed
  • e = 1; number of entries printed
  • n = 1; name of histogram is printed

void SetLabelSize(Float_t size, Option_t *axis)

• size is expressed as % of pad height
• axis is "x" or "xyz" etc...

void SetFrameFillColor(Color_t color=1)

• sets default fill color for frames (i.e. inside of axes)

void SetTitleX(Float_t x=0)

• also works for SetTitleY, where x is expressed as % of pad width

TCanvas Options

TAttAxis?

• SetTitleOffset(1.4);

TPad Options

• SetLeftMargin(0.15)

TH1 Options

• void SetLineColor(Color_t lcolor)
• void SetMarkerColor(Color_t tcolor=1)
• void SetMarkerStyle(Style_t mstyle=1)

• void SetMarkerSize(Size_t msize=1)
• void SetLineStyle(Style_t lstyle)

• void SetLineWidth(Width_t lwidth)

Color Information

Only in 5.15

Determine ROOT version @ compile time:

• #if ROOT_VERSION_CODE <= ROOT_VERSION(5,15,0)

-- MatthewLeBourgeois - 18 Apr 2007