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$BASE/.rootrc:
This file is for setting ROOT environment. See the following to properly use it:
https://root.cern.ch/root/html/TAttText.html
ftp://root.cern.ch/root/doc/ROOTUsersGuideHTML/ch02s07.html
https://root.cern.ch/root/roottalk/roottalk01/2867.html
Here is an example of a .rootrc file:
Gui.DefaultFont: -*-helvetica-medium-r-normal-*-14-*-*-*-*-*-iso8859-1
Gui.MenuFont: -*-helvetica-medium-r-normal-*-14-*-*-*-*-*-iso8859-1
Gui.MenuHiFont: -*-helvetica-bold-r-normal-*-14-*-*-*-*-*-iso8859-1
Gui.DocFixedFont: -*-courier-medium-r-normal-*-14-*-*-*-*-*-iso8859-1
Gui.DocPropFont: -*-helvetica-medium-r-normal-*-14-*-*-*-*-*-iso8859-1
Gui.IconFont: -*-helvetica-medium-r-normal-*-12-*-*-*-*-*-iso8859-1
Gui.StatusFont: -*-helvetica-medium-r-normal-*-12-*-*-*-*-*-iso8859-1
Root.MemStat: 1
Root.ObjectStat: 1
If needed we can also add additional instructions in a C file and run it on each ROOT login:
Rint.Logon: /path/to/rootlogon.C
/---------------------------
/--- rootlogon.C -----------
/---------------------------
{
TStyle *mystyle = new TStyle("mystyle", "My own ROOT style");
mystyle->SetCanvasBorderMode(0);
mystyle->SetFrameBorderMode(0);
mystyle->SetPalette(1,0);
mystyle->SetOptTitle(0);
mystyle->SetCanvasColor(0);
mystyle->SetStatFontSize(0.024);
mystyle->SetStatBorderSize(1);
mystyle->SetStatColor(kGray);
mystyle->SetStatX(0.925);
mystyle->SetStatY(0.925);
mystyle->SetStatW(0.13);
mystyle->SetTextFont(132);
mystyle->SetTextSize(0.08);
mystyle->SetLabelSize(0.03,"xyz");
mystyle->SetLabelOffset(0.01,"xyz");
mystyle->SetPadTickX(1);
mystyle->SetPadTickY(1);
mystyle->SetCanvasDefX(100);
mystyle->SetCanvasDefY(50);
mystyle->SetCanvasDefW(900);
mystyle->SetCanvasDefH(600);
mystyle->SetPadBottomMargin(0.1);
mystyle->SetPadTopMargin(0.04);
mystyle->SetPadLeftMargin(0.125);
mystyle->SetPadRightMargin(0.04);
gROOT->SetStyle("mystyle");
cout << "Setting custom style from /path/to/.rootlogon.C" << endl;
return;
}