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H2ROOT(1) | General Commands Manual | H2ROOT(1) |
NAME¶
h2root - convert PAW HBOOK files to ROOT filesSYNOPSIS¶
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¶
andThe ROOT Users Guide
available from the main ROOT website:
h2root is documented fully on
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 USAAUTHOR¶
This manual page was written by Christian Holm Christensen <cholm@nbi.dk>, for the Debian GNU/Linux system (but may be used by others).Version 3 | ROOT |