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from TProcessID.
With this new version, it is possible to write a TRef to a new file
without writing the referenced object.
Implement assignement operator TRef& operator=(cont TRef &ref).


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Simplification of the actions in TFile::Open and TFile::Close using the
new functions in TProcessID.


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The first time a referenced or referencing object is written to a file,
the corresponding TProcessID is also written.
The ObjectCounter fgNumber also moved to TProcessID.


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Double_t TVector2::DeltaPhi(const TVector2& v) const
void TVector2::Set(const TVector2& v)


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  o RooAbsPdf

    - Add plotCompSliceOn with 'const RooArgSet&' style
      component specification

  o RooAddPdf

    - Fix component plotting for projection integrals


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Make sure TStreamerInfo is not optimized, otherwise it will not be
possible to support schema evolution in read mode.
In case the StreamerInfo has already been computed and optimized,
one must disable the option BypassStreamer.

Files containing TClonesArray written with split=0 could not be read
in case the class in the TClonesArray had been changed.


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  o RooAbsCollection

    - Add selectByName() member that accepts a comma separated list
      of wildcard patterns to create a subset filled with the matching
      elements

  o RooAbsData

    - Fix typo in print message

  o RooAbsPdf

    - Add new plotCompOn/plotCompSliceOn methods that take
      a string wildcard expression or argset of components
      to plot. Selected component may occur at any level in
      the PDF tree

    - Add component selector flag bit to support new component
      plotting scheme

  o RooAddPdf

    - Change evaluate() to only include PDFs that have their
      selection bit raised

    - Remove old plotCompOn methods()

  o RooFitContext

    - Store asymmetic errors in parameter RooRealVars, if they
      are available

  o RooMCStudy

    - Adapt to changes in RooRealVar. Ensure persistence of
      symmetric and asymmetric errors of RRVs in parameter dataset

  o RooRealVar

    - Add asymmetric errors and accessor/modifier functions.
      Asym. errors are stored and managed independently from
      the existing symmetric error

    - Introduce hasError(), hasAsymError() functions indicating
      if an error has been set to the object.

    - Adapt writeToStream/readFromStream to process asymmetric
      errors. Split 'L(lo-hi:bins)' token in 'L(lo-hi) B(bins)'
      tokens so that bin specification becomes optional. Change
      logic for error printing: instead of requiring
      (!constant || error>0) simply require hasError()

    - By default no longer persist error(s) along with value
      when attached to a dataset. To request persistence of
      symmetric error, set "StoreError" attribute. To request
      persistence of asym. error, set "StoreAsymError" attribute.

  o RooSimultaneous

    - Deprecate specialized plotCompOn/plotCompSliceOn functions

    - Modify regular plotOn to plot a temporary RooAddPdf, with the
      coefficients determined from the fractions of the index
      state occurring the in the prototype dataset


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  o RooAbsReal

    - Bug fix in plotting when projection over data is done
      (Problem introduced in last round of projection plotting fixes)


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Assuming a class Event with the following members:
  Int_t            fNvertex;         //Number of vertices in Event
  char            *fTracksInVertex;  //[fNvertex] number of tracks for each vertex
  char            *fEventName;       // a string

ROOT I/O will assume that fEventname is terminated by a null character and that the
member contains a string.
fTracksInVertex will be processed like Int_t*, Float_t* with a number of elements
in the array indicated in the comment field.
fTracksInVertex may contain one or more 0s.


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        TGraph(const TVector  &vx, const TVector  &vy);
        TGraph(const TVectorD &vx, const TVectorD &vy);
The number of points in the graph is the minimum of vx and vy.


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class hierarchy where embedded classes have data members with the same name.


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value of the argument is kTRUE. When this value is kFALSE the buffer
passed will not be adopted by TBuffer and not deleted in the dtor
or in SetBuffer() when a new buffer is passed in. The default value
of adopt is backward compatible.


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For what else is new see http://root.cern.ch/root/Cint.phtml?relnote.


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TGWin32::DrawText() crashed if the specified angle is negative.


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  fVector.reserve(R__n);
This should improve slightly the reading of STL vectors.


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  o RooSimPdfBuilder

    - Allow splitting in a subset of the splitting categories,e.g.

      "splitCats = tagCat(Lep,Kao) runBlock"

      will only make splits for tagCat=Lep and tagCat=Kao. If no
      label list is provided, a category is split in all its states


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for the default directory in memory. This change makes a dramatic
improvement when building thousands of histograms in the default directory.


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to avoid a clash with TFormula::fNames. The problem was only visible when doing I/O
of a TTreeFormula.


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I've just realised that I've done something extreemly stupid in
TPrincipal::MakeHistograms which can make one waste enourmous amounts
of space and time.  The problem was, that the method looped over the
user data wether or not you actually wanted to plot it or not, thereby
wasting a lot of time.  Also, I allocated arrays via new in each
iteration, which is ofcourse a waste of time, so I moved that outside
the loop and added a zeroing loop instead.

Further,  I added the option 'd' to the CTOR, so that one may opt to
_not_ store the input data.  This reguired a new data member, and
hence a version bumb.  The default is to store the input data.  I
think this is a useful option for some, since the data arrays can
become quite large.

Thirdly, I modified the histogram names to be 0 padded upto 3 digits.
That is, the format is "%03d" rather than "%d", since that allows for
better overview in the browser.


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  o RooAbsReal

    - Fix creation of projection integral in plotOn(): add sliced
      dependents to set of dependents of projection integral
      (used to be contain only plot variable)

  o RooHist

    - Add _rawEntries data member to keep track of number of dataset
      entries before eventual cut applied when creating the RooHist.
      If _rawEnries is specified it will be return by getFitRangeNEvt()
      instead of the number of events contained in the histogram

  o RooTreeData

    - If a cut string is specifies in plotOn() store the original
      number of dataset entries in the created RooHist using
      RooHist::setRawEntries()


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  o RooSimultaneous

    - Add plotCompSliceOn()

    - Fix consistency checking of user input in plotOn() in case
      the index category is a composite object


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  o RooAddPdf

    - Add plotSliceCompOn() forwarding function


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  o RooConvolutedPdf

    - Cleaner handling of non-dependent variables in
      getAnalyticalIntegralWN(). (Solves some plotting problems)


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   o RooMultiCatIter

     - Modify to work with non-lvalue input categories. Iteration
       will no longer change the states of the input categories.
       The return TObject from Next() is now a TObjString containing
       the composite state label

   o RooSuperCategory

     - Adapt to RooMultiCatIter changes

   o RooMultiCategory

     - Non-lvalue variant of RooSuperCategory. Input categories
       are also not required to be lvalues

   o RooRealIntegral

     - In numeric summation code change from use of RooMultiCatIter
       to RooSuperCategory

   o RooSimPdfBuilder

     - Generate composite splitting categories as RooMultiCategories
       instead of RooSuperCategories, thereby allowing composite
       splits in terms of non-lvalue components


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using the Win32 version of GDK. This port is a work in progress but already
quite functional. Still missing, multiplexing between console and graphics
input. To use it do in tutorials, e.g.:
root demos.C
root benchmarks.C
root guitest.C
Or in test build guitest and guiviewer which don't use the console.


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files.


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