H2ROOT(1)

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
avaliable 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
ROOT Software Terms and Conditions

The authors hereby grant permission to use, copy, and distribute this software and its documentation for any purpose, provided that existing copyright notices are retained in all copies and that this notice is included verbatim in any distributions. Additionally, the authors grant permission to modify this software and its documentation for any purpose, provided that such modifications are not distributed without the explicit consent of the authors and that existing copyright notices are retained in all copies. Users of the software are asked to feed back problems, benefits, and/or suggestions about the software to the ROOT Development Team (rootdev@root.cern.ch). Support for this software - fixing of bugs, incorporation of new features - is done on a best effort basis. All bug fixes and enhancements will be made available under the same terms and conditions as the original software,

IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.

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).