git-svn-id: http://root.cern.ch/svn/root/trunk@31885 27541ba8-7e3a-0410-8455-c3a389f83636

a patch fixing some comments in the TBackCompFitter and Fitter class and adding 
missing GetMinimizer() and GetObjFunction() methods.


git-svn-id: http://root.cern.ch/svn/root/trunk@31873 27541ba8-7e3a-0410-8455-c3a389f83636

Fixes to the release notes to be compliant with w3c


git-svn-id: http://root.cern.ch/svn/root/trunk@31860 27541ba8-7e3a-0410-8455-c3a389f83636

From Matthew Strait:
Wraps very long lines used for HTML documentation
Fixes grammar/typo in DrawNormalized output
Fixes grammar in Chi2test output
Switches Chi2test output to refer to "h1" and "h2" instead of "Hist1" and "Hist2" to more closely match the names used in the code, and therefore other parts of the documentation.
Removes a few extra spaces and things like that.


git-svn-id: http://root.cern.ch/svn/root/trunk@31819 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31801 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31764 27541ba8-7e3a-0410-8455-c3a389f83636

- fix also case when fBinSumw2 is non zero (in GetEffectiveEntries) when reading an old file (< 5.22) with Sumw2 set 
This fixes stressHistogram


git-svn-id: http://root.cern.ch/svn/root/trunk@31737 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31697 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31696 27541ba8-7e3a-0410-8455-c3a389f83636

Now that the default constructor for TH2 allocate 9 cells, (see revision 30630), the default constructor for the TProfile needs to call buildOptions otherwise their are malformed and a = new TProfile2D(); b = new TProfile2D(*a); crashes


git-svn-id: http://root.cern.ch/svn/root/trunk@31693 27541ba8-7e3a-0410-8455-c3a389f83636

void TGraphTime::SaveAnimatedGif(const char *filename) const
   // Save this object to filename as an animated gif file
   // if filename is specified it must be of the form xxx.gif
   // otherwise a file yyy.gif is produced where yyy is the object name


git-svn-id: http://root.cern.ch/svn/root/trunk@31667 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31658 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31649 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31645 27541ba8-7e3a-0410-8455-c3a389f83636

- fix a problem returning the covariance matrix when fit failed. Now all minimizer implements CovMatrixStatus() when they calculate the covariance matrix. Add in FitResult method to return covariance matrix status 
- Add a flag in interface of Minimizer::GetMinosError to do separatly positive or negative errors 
- fix usage of  default minimizer from what is defined in etc/system.rootrc

- improve comment in TH1::Fit and TGraph::Fit for usage of TFitResultPtr


git-svn-id: http://root.cern.ch/svn/root/trunk@31604 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31527 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31526 27541ba8-7e3a-0410-8455-c3a389f83636

Merge the changes from David in the dev branch (up to rev 31490) to return the TFitResultPtr from the Fit methods of 
TGraph, TGraph2D, TMultiGraph, THnSparse


git-svn-id: http://root.cern.ch/svn/root/trunk@31491 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31400 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31382 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31381 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31378 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31376 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31371 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31362 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31325 27541ba8-7e3a-0410-8455-c3a389f83636

  to the macro hstack.C executed to build the THistPainter 
  online doc. The previous fix should be reconsidered. It 
  was not critical any way.


git-svn-id: http://root.cern.ch/svn/root/trunk@31321 27541ba8-7e3a-0410-8455-c3a389f83636

Fix a portability problem in statements using throw


git-svn-id: http://root.cern.ch/svn/root/trunk@31302 27541ba8-7e3a-0410-8455-c3a389f83636

- fix a problem in SparseData reproted by valgrind
- TH1: fix warnings found on VS++ 9


git-svn-id: http://root.cern.ch/svn/root/trunk@31267 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31262 27541ba8-7e3a-0410-8455-c3a389f83636

- implement TFitRresult::Print and method to retrieve a covariance and correlation matrix as a TMatrixDSym

FitResult: 
- fix a bug in FitResult in returning the correlation matrix for fixed parameters 
- improve printout in case of empty classes


git-svn-id: http://root.cern.ch/svn/root/trunk@31261 27541ba8-7e3a-0410-8455-c3a389f83636

- return directly the status in operator int() due to a problem observed when CINT was calling this function

- use R__ASSERT insetad of assert


git-svn-id: http://root.cern.ch/svn/root/trunk@31218 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31209 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31208 27541ba8-7e3a-0410-8455-c3a389f83636

from David and myself 


Summary of major changes: 

- TFitResult, TFitResultPtr

  - add new class TFitResult which extend FitResult with TNamed for the I/O. The result of the fit , including covariance and correlation matrix, minos errors, etc... can then be stored  in a file
  - add a class TFitResultPtr which behaves like a pointer to TFitResult and can be converted to an integer. This class is now returned by TH1::Fit and TGraph::Fit. By default the class contains only the returned integer status of the fit. If option "S" is used the class contains a pointer to TFitResult which can be retrieved using the -> or * operators (like a smart pointer)
The conversion to int provides backward compatibility with the old signature ( int TH1::Fit )

- TH1, TGraph, TGraph2D, TMultiGraph
  change from int Fit(....)  to TFitResultPtr Fit(.....)
  remove internal function DoFit  
  
- THnSparse

  add functionality for fitting a sparse histogram. Default method is the likelihood one. Chi2 can be used with the new option "X"

- FOption

 - add some new options for fitting: 
 
     "S" for storing the fit resul
     "X" for forcing chi2 fit in case of THnSParse
     "EX0" for neglecting errors in X when fitting TGraphErrors

- WrappedMultiTF1

 - make the wrapper for TF1 multi-dim function implementing the gradient interface 

Minos changes: 

 TH1: 
  - add check of compatibility for each bins when using Add on variable bin histograms

 TH3: 
 - fix a bug in setting the entries for a projected 2d profile when using weights
 THNSParse: 
 - set also the entries (and reset statistics) in the projected sparse histogram

 TFormula: 
 - define the number for the 2d function like xygaus or xylandau

 HFItInterface: 
  improve filling data for histograms (add support for bin volume normalization)
  add initialization for exponential and 2d gaus functions


git-svn-id: http://root.cern.ch/svn/root/trunk@31207 27541ba8-7e3a-0410-8455-c3a389f83636

The value of teh function is saved at the center of the histogram bins instead of equidistant points. This makes drastic improvements when rendering the function in case of variable
bin size histograms.


git-svn-id: http://root.cern.ch/svn/root/trunk@31184 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31183 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@31177 27541ba8-7e3a-0410-8455-c3a389f83636

fix a bug in TH1::ResetStats when the histogram has all errors zero. (Sumw2 = 0 and sumw is not zero)

In this case set the number of entries and effective entries to sumw


git-svn-id: http://root.cern.ch/svn/root/trunk@30988 27541ba8-7e3a-0410-8455-c3a389f83636

git-svn-id: http://root.cern.ch/svn/root/trunk@30958 27541ba8-7e3a-0410-8455-c3a389f83636