ROOT
From Biocrawler, the free encyclopedia.
ROOT is a powerful object oriented data analysis package developed by CERN to replace earlier packages (which include PAW, CERNLIB). ROOT is written in C++, on an ad hoc platform that provides a graphical user interface, container classes, reflection, and a command line interpreter (CINT). The packages provided by ROOT include those for histogramming, curve fitting (regression analysis), minimization of functionals, matrix algebra, four-vector computations.
A key feature of ROOT is its data abstraction model, but it is one that can be confusing to new users. A tree, and its substructures (branches and leaves), can be seen as a sliding window to the raw data, as stored in a file. Data from the next entry in the file can be retrieved by advancing the index in the tree. This avoids memory allocation issues associated with object creation, and allows the tree to act as a lightweight container while handling buffering invisibly.
ROOT is used extensively in data acquisition and analysis in high energy physics experiments.
External link
- The ROOT System Home Page (http://root.cern.ch/)
