readPedeHists.C File Reference

ROOT script to read pede histograms. More...

#include <fstream>
#include <vector>
#include <utility>
#include <iostream>
#include <TROOT.h>
#include <TFile.h>
#include <TDirectory.h>
#include <TError.h>
#include <TH1.h>
#include <TGraph.h>
#include <TGraphErrors.h>
#include <TCanvas.h>
#include <TMath.h>
#include <TPaveText.h>

Go to the source code of this file.

Classes
class	ReadPedeHists

Functions
void	readPedeHists (Option_t *option="", const char *txtFile="millepede.his")

Detailed Description

ROOT script to read pede histograms.

Author

Gero Flucke, University Hamburg, 2007

Copyright

Copyright (c) 2009 Deutsches Elektronen-Synchroton, Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this program (see the file COPYING.LIB for more details); if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*
*    |-------------------------------------------------------------------|
*    ||-----------------------------------------------------------------||
*    ||   ROOT script to read the millepede.his file produced by pede   ||
*    ||-----------------------------------------------------------------||
*    |-------------------------------------------------------------------|
*
* Author     : Gero Flucke, University Hamburg, 2007
* Date       : July 2007
* Last update: $Date: 2009/01/20 20:22:27 $ by $Author: flucke $
* 

Usage:

Start ROOT and compile (!) the script:

root [0] .L readPedeHists.C+ Info in <TUnixSystem::ACLiC>: creating shared library ./readPedeHists_C.so

If the millepede.his file is in the directory that ROOT was started in, just call

root [1] readPedeHists()

ROOT will display the histograms (TH1) and XY-data objects (TGraph).

The following options and their combinations can be given as first argument:

• print: produce a postscript file millepede.his.ps
• write: write the histograms and graphs into the ROOT file millepede.his.root
• nodraw: skip displaying (write/print work still fine)

Note that both options 'print' and 'write' will overwrite existing files.

If the millepede.his file has been renamed or is not in the local directory, its name can be given as second argument. The names of the postscript or ROOT files will be adjusted to the given name, too.

The following example will read the file '../adir/millepede_result5.his' and directly produce the postscript file '../adir/millepede_result5.his.ps' without displaying and without producing a ROOT file:

root [1] readPedeHists("print nodraw", "../adir/millepede_result5.his") Info in <TCanvas::Print>: ps file ../adir/millepede_result5.hisps has been created Info in <TCanvas::Print>: Current canvas added to ps file ../adir/millepede_result5.his.ps Info in <TCanvas::Print>: Current canvas added to ps file ../adir/millepede_result5.his.ps Info in <TCanvas::Print>: Current canvas added to ps file ../adir/millepede_result5.his.ps Info in <TCanvas::Print>: Current canvas added to ps file ../adir/millepede_result5.his.ps

Possible modifications:

• The size of the canvases is defined in ReadPedeHists::Draw() via 'nPixelX' and 'nPixelY'.
• The number of histograms/graphs per canvas is defined in ReadPedeHists::Draw() as 'nHistX' and 'nHistY'.
• The position of the corners of the boxes giving the minimum or maximum value of a histogrammed distribution is defined as the first four arguments after 'new TPaveText' at the end of the method ReadPedeHists::readNextHist.
• gStyle->SetOptStat(...), executed before readPedeHists(), defines whether you see all relevant information in the statistics. Try e.g.: root [0] gStyle->SetOptStat("emrou"); // or "nemrou"

Definition in file readPedeHists.C.

Function Documentation

readPedeHists()

void readPedeHists	(	Option_t *	option = "",
		const char *	txtFile = "millepede.his"
	)

Definition at line 594 of file readPedeHists.C.

References ReadPedeHists::Draw(), ReadPedeHists::Print(), and ReadPedeHists::Write().