First Development version v3.00/01 available

22/12/2000

This is the first pre-release of the development version 3.00. For detailed information see the release notes. Binaries can be downloaded from the standard location. Note that this version has some backward incompatibilities due to the introduction of constness in the member functions signatures. This new version features several new I/O capabilities. The final release of 3.00 will include additional support for STL and a symmetric behaviour for the Trees split/non-split modes.

Extensions to the ROOT I/O system

28/11/2000

The version 3.0 of ROOT currently under development includes several enhancements in the I/O sub system, such as: A new Automatic Class Schema Evolution system. The StreamerInfo saved to Root files. A self-describing object format. Full support for STL. An automatic code generator from the class StreamerInfo. The document The ROOT I/O system describes the new system including the new features. We invite you to read this document carefully. We strongly encourage as many users as possible to test this development version available only from our main CVS repository and give us feedback. If everything goes well, we are planning to release this new version around Christmas. In the next phase of developments, we are planning to extend the TTree split mode to take advantage of the new system and remove all limitations specific to this mode.

Draft of the ROOT User's Guide Available	31/10/2000
A preliminary version of the ROOT User's Guide is now available. It contains about 20 chapters and 320 pages. Before printing the first edition we appreciate any comments on the current version. Note that we cannot accept requests to ship printed copies at this time.

ROOT Ported to Red Hat 7.0 (glibc 2.2)	02/10/2000
ROOT has been ported to Red Hat 7.0 which uses the new glibc 2.2. The compiler coming with RH 7.0 is fairly buggy. Don't compile code with -O2, use not more than -O. Code is available from CVS. Configure with: ./configure linuxegcs.

Final Version v2.25 Released (v2.25/03)

15/09/2000

We are pleased to announce the final 2.25 release of ROOT. This version contains a number of important new features. Like: The TFolder class. A TFolder hierarchy provides a named, in memory, object store (whiteboard) where objects can be posted. Other classes can access the objects in the folders by name (using a "Unix-like" naming scheme). This whiteboard facility can greatly improve the modularity of an application by minimizing class relationships. Improvements in the TBrowser. The width of the two main panes can be dynamically changed by dragging the bar separating the two panes. This new feature is made possible by the new TGSplitter widget. Explicit collection ownership. By calling the new method TCollection::SetOwner() you can tell a collection it owns the objects stored in it. When an owning collection is cleared or deleted it will delete all the objects it contains. New shape TXTRU by R. Hatcher. New class TGenPhaseSpace by V. Filippini. Latest CINT 5.14.50. Several cleanups in the TObject base class. Many smaller enhancements and bug fixes. See the release notes. Note: due to changes in the base classes and a slight change in the dictionary format all dictionaries need to be regenerated and all sources need to be recompiled to work with this new version. On AFS this version will be available under pro and the CVS tag is v2-25-final. Before starting version 2.26 the ROOT team will spend the next two weeks at the CERN School of Computing in Greece. Depending on the local connectivity our response time may be severly delayed.

New Version v2.25/02 Released

22/08/2000

Consolidation release with several interesting new features. For example: The Principal Components Analysis class TPrincipal and its TTree interface Much improved contour drawing (option CONT) for 2D histograms Latest CINT 5.14.47 Many smaller enhancements, see the release notes Binaries can be downloaded from the standard location. The coming ten days the ROOT team will be very busy preparing its CERN School of Computing lectures so feedback might be reduced during this time. Bear with us.

New Version v2.25/01 Released	08/08/2000
This is a bug-fix release. The only major new class is a text edit GUI widget, TGTextEdit. For detailed information see the release notes. Binaries can be downloaded from the standard location.

New Version v2.25/00 Released

22/06/2000

We are happy to announce the release of version 2.25 of ROOT. Since this new version contains many new features we've bumped the version number from 2.24 to 2.25. We believe that most changes are backward compatible, except in a few well documented cases. The main changes are: change from single to double precision in many classes better handling of arrays in TTree::Draw() source now maintained and available in CVS and new makefiles full cross-reference of the latest sources available on the web ported to even more hardware (including Intel's new Itanium) rootd and proofd now use official IANA assigned port numbers See the release notes for detailed information and download it.

New Version v2.24/04 Released	05/05/2000
See the release notes for detailed information and download it.

New Version v2.24/02 Released	13/04/2000
See the release notes for detailed information and download it. This new version includes some minor fixes and some new developments. Note that new files containing TH2 or TH3 objects cannot be read by a previous version due to a restructuring of the THx inheritance tree. Of course, this new version can read histograms produced by any previous version.

Slides of ROOT 2000 Workshop Talks Available	22/2/2000
The slides of the ROOT 2000 Workshop are now available in native (Powerpoint, StarOffice, KPresenter) and HTML format. Thanks again to all participants who made the workshop such a success.