List ROOT TFiles and dump TNtuples
This project contains a ROOT macro to list the content
of ROOT TFiles and to save to
ASCII CSV files all the
TNtuples that are found. A
main()
function is also provided, in order to compile the macro as a
standalone program.
Installation
A working copy of ROOT is required. The macro list_file.C
can be installed in
the macros/
folder in the ROOT installation directory, or copied and used in
the current folder.
The standalone program can be compiled with the provided Makefile
, with the
due modifications for your OS and architecture.
Files
- Readme:
README.md
- Makefile:
Makefile
- ROOT Macro:
list_file.C
main()
function definition:list_file_main.cpp
Download all the files: list_file.tar.bz2
Usage
Macro
The list_file()
function takes two arguments:
file_name
: achar*
that holds the filename;save_data
: abool
that enables the dumping to file of the TNtuples (optional)
The TNtuples are saved to files with names: <root_file name>_<TNtuple name>.csv
bash$ root
------------------------------------------------------------
| Welcome to ROOT 6.04/08 http://root.cern.ch |
| (c) 1995-2014, The ROOT Team |
| Built for macosx64 |
| From tag , 4 November 2015 |
| Try '.help', '.demo', '.license', '.credits', '.quit'/'.q' |
------------------------------------------------------------
root [0] .L list_file.C
root [1] list_file("datafile.root", true);
Opening file: datafile.root
TFile** datafile.root
TFile* datafile.root
KEY: TNtuple pjmca;1
******************************************************************************
*Tree :pjmca : *
*Entries : 1097099 : Total = 17603277 bytes File Size = 7488720 *
* : : Tree compression factor = 2.35 *
******************************************************************************
*Br 0 :ch0 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2258988 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.94 *
*............................................................................*
*Br 1 :ch1 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2343857 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.87 *
*............................................................................*
*Br 2 :ch2 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2400312 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.83 *
*............................................................................*
*Br 3 :ch3 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 457302 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 9.59 *
*............................................................................*
Saving TNtuple pjmca to: datafile_pjmca.csv
root [2] .q
Standalone program
The standalone program takes a list of files as command line arguments and it lists the content of each one of the files.
The optional -s
argument enables the dumping to file of the TNtuples.
bash$ ./list_file -s datafile.root
Opening file: datafile.root
TFile** datafile.root
TFile* datafile.root
KEY: TNtuple pjmca;1
******************************************************************************
*Tree :pjmca : *
*Entries : 1097099 : Total = 17603277 bytes File Size = 7488720 *
* : : Tree compression factor = 2.35 *
******************************************************************************
*Br 0 :ch0 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2258988 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.94 *
*............................................................................*
*Br 1 :ch1 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2343857 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.87 *
*............................................................................*
*Br 2 :ch2 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 2400312 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 1.83 *
*............................................................................*
*Br 3 :ch3 : Float_t *
*Entries : 1097099 : Total Size= 4417981 bytes File Size = 457302 *
*Baskets : 137 : Basket Size= 32000 bytes Compression= 9.59 *
*............................................................................*
Saving TNtuple pjmca to: datafile_pjmca.csv
Changelog
- 2009/08/23 - First version
- 2015/11/06 - Added the option to save ntuples to file
- 2015/11/09 - Converted from standalone to ROOT macro
- 2016/08/09 - Cleaned up the Makefile and improved documentation
License (Modified BSD License)
Copyright (C) 2009,2015,2016, Cristiano Lino Fontana
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- Neither the name of the University of Padua nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CRISTIANO LINO FONTANA BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.