Provided by: root-plugin-hist-hbook_5.34.14-1build1_amd64 

NAME
h2root - convert PAW HBOOK files to ROOT files
SYNOPSIS
h2root file.hbook file.root [compress] [tolower] [lrecl]
DESCRIPTION
h2root you can use to convert your HBOOK/PAW histograms or ntuples files into ROOT files. To use this
program, you type the shell script command:
h2root hbookfile rootfile
If you do not specify the second parameter, a file name is automatically generated for you. If hbookfile
is of the form file.hbook, then the ROOT file will be called file.root.
This program converts HBOOK histograms into ROOT objects of the class TH1F. HBOOK profile histograms are
converted into ROOT profile histograms (see class TProfile). HBOOK row-wise and column-wise ntuples are
automatically converted to ROOT Trees(see TTree). Some HBOOK column-wise ntuples may not be fully
converted in case one of the columns is an array with fix dimensions (eg. `var[6]') or is a multi-
dimensional array.
HBOOK integer identifiers are converted into ROOT named objects by prefixing the integer identifier with
the letter `h' if the identifier is a positive integer and by `h_' if it is a negative integer
identifier.
In case of row-wise or column-wise ntuples, each column is converted to a branch of a Tree. Note that
h2root is able to convert HBOOK files containing several levels of sub-directories. Once you have
converted your file, you can look at it and draw histograms or process ntuples using the ROOT interactive
module. You can also use the ROOT browser (see TBrowser) to inspect this file.
The chapter How to read a Tree explains two ways to read a Tree. ROOT includes the function
TTree::MakeCode to automatically generate the code for a skeleton analysis function. With
OPTIONS
compress
= 1 by default (use 0 for no compression)
tolower
= 1 by default (use 0 to keep case of column names)
lrecl = 0 by default (must be specified if >8092)
SEE ALSO
root(1), g2root(1)
and
The ROOT Users Guide
available from the main ROOT website:
http://root.cern.ch
h2root is documented fully on
http://root.cern.ch/root/HowtoConvert.html
ORIGINAL AUTHORS
The ROOT team (see web page above):
Rene Brun and Fons Rademakers
COPYRIGHT
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General
Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not,
write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
AUTHOR
This manual page was written by Christian Holm Christensen <cholm@nbi.dk>, for the Debian GNU/Linux
system (but may be used by others).
ROOT Version 3 H2ROOT(1)