Dear Rooters, Just before leaving for the ROOT2004 workshop at SLAC, we have the pleasure to announce the first development release of ROOT 4.00/02. All these developments will be discussed at the workshop. Tar files for the source, documentation and binaries are available at: http://root.cern.ch/root/Version400.html http://root.cern.ch/root/html/examples/V4.00.txt.html The corresponding CVS tag is v4-00-02. A quick summary of the new features in version 4 ================================================ -support for large files above 2 GBytes -automatic schema evolution for foreign classes -Generic support for STL collections in the dictionary -STL vector<T> behaves like a TClonesArray of T, including split mode) -New data type Double32_t (double in memory, 32 bits in file) -Consolidation of the PROOF classes. -More features in the authentication system. -New Linear Algebra package -New class TRolke by Jan Conrad. This class computes confidence intervals for the rate of a Poisson in the presence of background and efficiency with a fully frequentist treatment of the uncertainties in the efficiency and background estimate using the profile likelihood method. -New Graphical Object Editor (optional). To activate the new editor, uncomment the line defining the TVirtualEditor in system.rootrc and use the definition with the new editor, as shown below: #Plugin.TVirtualPadEditor: Ged TPadEditorOld GedOld "TPadEditorOld()" Plugin.TVirtualPadEditor: Ged TGedEditor Ged "TGedEditor(TCanvas*)" This new editor will soon become the default. -generation of pdf files in addition to ps, eps, gif, etc -New class TGraph2DErrors. More features in TGraph2D. -Consolidation of win32gdk For more details see the development notes. The ROOT team
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