class HTool: public TNamed

 constructor for HTool

 destructor of HTool

 inits all variables

 Opens root file "fName" to the pointer "file" with option
 New,Read,Recreate and Update. Checks if file exists or is
 already opened. If everything works fine kTRUE is returned.

 Close the root file of the pointer file if
 existing and open and sets the file pointer to 0.
 Returns kTRUE if OK.

 Opens ascii file "fName" to the pointer file with the option
 "r" and "w". Returns kTRUE if OK.

 Close ascii file of the pointer file if file!=0 and
 sets the file pointr to 0 afterwards. Returns kTRUE
 if OK.

 Expand 'pattern' as it would be done by the shell (see sh(1)):
 '*', '?', '~', '$ENVIRONMENT_VARIABLE' and '[', ']' are expanded. In case
 the expansion is successful, a TObjArray of TObjStrings with the
 names of all existing files is returned - otherwise NULL.

 The returned TObjArray must be deleted by the caller of the function!

 This example returns all existing .root files in /tmp as well as all .root
 files in your home directory starting with the characters 'a', 'b', 'c'
 and 'e':

 TObjArray* files = HTool::glob( "/tmp/*.root $HOME/[a-c,e]*.root" );
 if (files)
 {
    TObjString* name = NULL;
    TIterator*  file = files->MakeIterator();
    while ((name = (TObjString*)file->Next()))
    {
       Char_t* input = name->GetString.Data(); ...
    }
    delete files;
 }

 Util function for writing ntuple data to ascii file:
 Input     : Input File (*.root)
 ntuple    : name of ntuple in Input File
 Output    : Output ascii File
 separator : data field separator (" " or "," or "\t" .....)
 selection : comma separated list of leaf names ( like x,y,z,mom ...)
             - if empty all leafs will be written (default)
             - if list contains "-" all leafs but the listed ones will be written
 condition : like Tree->Draw() selection. Only rows which fulfill the condition will be written
             - if empty no condition is applied (default)
 entries   : number of entries which should be read
             - if == -1 all entries are analyzied (default)
 startEntry: first entry to strt in in ntuple
 ColWidth  : format width for the data field
             - if ==0 no format is applied  (default)

 create all variables to map the ntuple in oufile. opens root file, retrieves
 the ntuple pointer. sets all branch addresses.
 "infile"     = input root file containing the ntuple
 "prefix"     = this string will be prepended to the normal variable names (needed for multiple identical ntuples)
 "ntupleName" = name of the ntuple in the root file
 "outfile"    = macro file which will be created.
                this macro can be loaded via gROOT->LoadMaco(....)
                + execute function as macro name (without .C)
                TNtuple* ntuple = mymacro(); to get the ntuple pointer
                in compiled code you have to use "#include mymacro.C" of the
                before created macro and remove gROOT->LoadMaco(....)



 example :

  //--------------------------------
  // comment in if you want to compile
  // and the macros exist already!
  //#include "mymacro.C"
  //#include "mymacro2.C"
  //--------------------------------


 void testNtupleMap()
 {
    //--------------------------------
    comment out if you want to compile and
    the macros are in the #include

    create the first macro for ntuple
    HTool::createNtupleMap("myfile.root","test_" ,"myntuple","mymacro.C");
    HTool::createNtupleMap("myfile.root","test2_","myntuple","mymacro2.C");
    gROOT->LoadMacro("mymacro.C");
    gROOT->LoadMacro("mymacro.C");
    //-------------------------------------

    TNtuple* ntuple  = mymacro (); // functions defined in marco
    TNtuple* ntuple2 = mymacro2(); // functions defined in marco

    Int_t n = ntuple->GetEntries();
    Float_t* dat = ntuple->GetArgs();
    for(Int_t i = 0; i < n ; i ++){
        ntuple->GetEntry(i);
        cout<<test_var<<endl;   // if var is a member of the ntuple (defined in macro)
    }
    cout<<"----------------"<<endl;

    Int_t n2 = ntuple2->GetEntries();
    for(Int_t i = 0; i < n2 ; i ++){
        ntuple2->GetEntry(i);
        cout<<test2_var<<endl;  // if var is a member of the ntuple (defined in macro)
    }
 }

 prints out level steps of function calls
 before the function call (backtrace)
 Useful for debugging

 print the progress of a loop in %, where ct is the loop
 counter, total the total number of loops and step the
 step size in precent for which the print should be done.

 Function to create subdirectories, where dirold is the pointer of the old Directory,
 "c" the name of the new Directory an "i" the number (c + i) of the directory."p" gives
 the formating number of digits filled with 0. If "i"==-99 the numbering part is skipped.
 Checks if the Directrory exists , if so changes into otherwise create it new. The
 pointer to the new Directory is returned.

 Changes into the given path. If the Directory is not existing
 it will be created. The pointer to the new directory will be returned.

 Checks if a given path "p" in file "input" exists.
 The actual directory will not be changed. Returns
 kTRUE if OK.

 return a list of all data members of a class.
 contains all data members of bass classes.

 scans oracle runs table source code to extract
 file names, run ids and number of events

 Round d to ndigits

 Round d to ndigits

 Execute 'command' in a shell and return the exit code of 'command'.
 'output' is filled with the data written to STDOUT and STDERR by
 'command'.

 sorts array arrIn. If down=kTRUE sort in decreasing order.
 If overwrite=kTRUE input array is sorted otherwise not and
 the result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts array arrIn. If down=kTRUE sort in decreasing order.
 If overwrite=kTRUE input array is sorted otherwise not and
 the result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts array arrIn. If down=kTRUE sort in decreasing order.
 If overwrite=kTRUE input array is sorted otherwise not and
 the result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts array arrIn. If down=kTRUE sort in decreasing order.
 If overwrite=kTRUE input array is sorted otherwise not and
 the result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts array arrIn. If down=kTRUE sort in decreasing order.
 If overwrite=kTRUE input array is sorted otherwise not and
 the result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts n arrays arrIn paralell (destruktive!). Array pointer arrIn[leading] will be the
 leading one. The other arrays will be sorted according to the reordering of the leading array.
 If down=kTRUE sort in decreasing order.
 The result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts n arrays arrIn paralell (destruktive!). Array pointer arrIn[leading] will be the
 leading one. The other arrays will be sorted according to the reordering of the leading array.
 If down=kTRUE sort in decreasing order.
 The result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts n arrays arrIn paralell (destruktive!). Array pointer arrIn[leading] will be the
 leading one. The other arrays will be sorted according to the reordering of the leading array.
 If down=kTRUE sort in decreasing order.
 The result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts n arrays arrIn paralell (destruktive!). Array pointer arrIn[leading] will be the
 leading one. The other arrays will be sorted according to the reordering of the leading array.
 If down=kTRUE sort in decreasing order.
 The result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 sorts n arrays arrIn paralell (destruktive!). Array pointer arrIn[leading] will be the
 leading one. The other arrays will be sorted according to the reordering of the leading array.
 If down=kTRUE sort in decreasing order.
 The result can be obtained from the index array (has to be provided
 by the caller with size >=n ) If index=NULL the index array is not used.
 if index=NULL and overwrite=kFALSE the function returns
 without doing anything.

 calculates the kurtosis


\
   ( x-mean)^4

----------------  - 3
n*sigma^4


 The kurtosis will be > 0 for distributions
 compared wider than a normal distribution and
 and < 0 for distributions beeing peaking stronger

 calculates the kurtosis


\
   ( x-mean)^4

----------------  - 3
n*sigma^4


 The kurtosis will be > 0 for distributions
 compared wider than a normal distribution and
 and < 0 for distributions beeing peaking stronger

 calculates the kurtosis


\
   ( x-mean)^4

----------------  - 3
n*sigma^4


 The kurtosis will be > 0 for distributions
 compared wider than a normal distribution and
 and < 0 for distributions beeing peaking stronger

 calculates the kurtosis


\
   ( x-mean)^4

----------------  - 3
n*sigma^4


 The kurtosis will be > 0 for distributions
 compared wider than a normal distribution and
 and < 0 for distributions beeing peaking stronger

 calculates the skew


\
   ( x-mean)^3


n*sigma^3


 The skew will be > 0 for distributions
 haveing more entries in the tails larger than mean
 and < 0 for distributions haveing more entries small
 than mean

 calculates the skew


\
   ( x-mean)^3


n*sigma^3


 The skew will be > 0 for distributions
 haveing more entries in the tails larger than mean
 and < 0 for distributions haveing more entries small
 than mean

 calculates the skew


\
   ( x-mean)^3


n*sigma^3


 The skew will be > 0 for distributions
 haveing more entries in the tails larger than mean
 and < 0 for distributions haveing more entries small
 than mean

 calculates the skew


\
   ( x-mean)^3


n*sigma^3


 The skew will be > 0 for distributions
 haveing more entries in the tails larger than mean
 and < 0 for distributions haveing more entries small
 than mean

 calculates the weighted mean


\
   x/sigma^2



\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 calculates the weighted mean


\
   x/sigma^2



\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 calculates the weighted mean


\
   x/sigma^2



\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 calculates the weighted mean


\
   x/sigma^2



\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 calculates the weighted sigma

1
sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted sigma

1
sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted sigma

1
sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted sigma

1
sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted mean and sigma


\
   x/sigma^2

mean = ----------------

\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 and

1
sigma = sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted mean and sigma


\
   x/sigma^2

mean = ----------------

\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 and

1
sigma = sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted mean and sigma


\
   x/sigma^2

mean = ----------------

\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 and

1
sigma = sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 calculates the weighted mean and sigma


\
   x/sigma^2

mean = ----------------

\
   1/sigma^2


 where x are the data points from data[i] and
 sigma the standard deviations of the points from dataerr[i]

 and

1
sigma = sqrt  ----------------          

\
   1/sigma^2


 where sigma is the standard deviations of the
 points from dataerr[i]

 Calculates the truncated mean of array arr with size n. The n * trunc (rounded down)
 of smallest and largest values are truncated. If overwrite == kTRUE (default) the content
 of the array will be changed by the sorting (down == kTRUE (default) downwards) otherwise
 the arry will be unchanged.

 Calculates the truncated mean of array arr with size n. The n * trunc (rounded down)
 of smallest and largest values are truncated. If overwrite == kTRUE (default) the content
 of the array will be changed by the sorting (down == kTRUE (default) downwards) otherwise
 the arry will be unchanged.

 Calculates the truncated mean of array arr with size n. The n * trunc (rounded down)
 of smallest and largest values are truncated. If overwrite == kTRUE (default) the content
 of the array will be changed by the sorting (down == kTRUE (default) downwards) otherwise
 the arry will be unchanged.

 Calculates the truncated mean of array arr with size n. The n * trunc (rounded down)
 of smallest and largest values are truncated. If overwrite == kTRUE (default) the content
 of the array will be changed by the sorting (down == kTRUE (default) downwards) otherwise
 the arry will be unchanged.

 Calculates the truncated sigma of array arr with size n.
 The n * trunc (rounded down)
 of smallest and largest values are truncated.

 Calculates the truncated sigma of array arr with size n.
 The n * trunc (rounded down)
 of smallest and largest values are truncated.

 Calculates the truncated sigma of array arr with size n.
 The n * trunc (rounded down)
 of smallest and largest values are truncated.

 Calculates the truncated sigma of array arr with size n.
 The n * trunc (rounded down)
 of smallest and largest values are truncated.

 calulates the downrounded integer corresponding
 to n * trunc. Used to calulated the active range of
 an sorted array for a truncation fraction trunc of
 the smallest and largest values.

 Round bin content to ndigit and binerror to ndigterr digits.
 for ndigit or ndigiterr =-1 the rounding will be skipped for
 the corresponding value.

 gets histogram with name name from root file

 Smooth bin contents of this histogram between firstbin and lastbin.
 (if firstbin=-1 and lastbin=-1 (default) all bins are smoothed.
 bin contents are replaced by their smooth values.
 Errors (if any) are not modified.
 algorithm can only be applied to 1-d histograms
 to replace removed function TH1::Smooth)

 calls internal the fitslice of root. Suffix can be added to name of fitted hists.
 Returns a TObjArray pointer to an array containing the result hists of the fit.
 Numbering is the same as the the parameters of the fitfunction + chi2 at last place.

 calls internal the projections function of the hist.
 Suffix can be added to name of fitted hists.
 Returns a TObjArray pointer to an array containing
 the result hists of the loop of projections.

 Applies fit fit to all hists in array. The result of the fit
 will be returned in a TObjArray which contains hists for all parameters
 from fit (with corresponding errors set). The number of hists is equal npar+1.
 The ordering inside the array starts from par0 to parN and the last hist
 will contain the chi2. The number of bins in the hists will be equal to the
 the number of fitted hists. The range of the result hists can be set via
 min and max. If these values ar not specified the range will be 0-1.
 If opt=1 fit will use range x1 x2 arround max of hists

 Fits h with TF1 f. Convert the hist to TGraphErrors
 first and than perfom the fit on the graph.
 With xmin/xmax/ymin,ymax a region can be selected.
 If window is !=0 the graph is fitted with f and
 in an second iteration the graph is rebuild to just
 contain values inside the window arround f. If clean
 is true all values of the hist arround the window of
 f are set to 0. String opt are options for the Fit.
 silent=kTRUE switches the prints off.

 removes bins from start to first and from last to end
 (first and last are kept). returns hist with name newname

 find first bins and last filled bins

 clean hist if bincontent is below a certain value (threshold):
 The bin content is replaced by val.

 reset hist with val for content and valerr for errors
 (if this values not equal -99).

 copy old hist into new one. You can decide to copy content of hist (val!=-99) and
 errors (valerr!=-99). Combinations are possible.
 if no new name is specified, _copy is appended to old name.

 copy old hist into new one. You can decide to copy content of hist (val!=-99) and
 errors (valerr!=-99). Combinations are possible.
 if no new name is specified, _copy is appended to old name.
 Copy is done in range from start to end. If end = -99, Full histogram is copied.

 beforms slices HTool::operation and fits the result with a line
 Resets the bins blow line equation - windowfunc to 0.

 beforms slices HTool::operation and fits the result with a line
 Resets the bins arround line equation +- windowfunc to 0.

 puts all bins outside the cut to 0.

 sets bincontent of hist h2 as errors of h

 Finds maximum of all hists in TH1* array of size size.
 return max and the index of the hist inside the array
 which has the highest max.

 Finds minimum of all hists in TH1* array of size size.
 return min and the index of the hist inside the array
 which has the lowest min.

 Rebins h2 with groups of groupX and groupY. The new created
 hist with name newname (if specified) or oldname_rebin will
 be returned.

 creates new hist with name newname (if specified)
 or oldname_exchangeXY with exchanged
 x- and y-axis

 flips x or y axis or both depending on opt (x,y,xy)

 shifts hist content by shiftbin bins

 shifts hist content by value shift

 Project to axis and and calc scaling factor for the bin
 to maximum of total hist max_total/max_proj. The bins of
 the hist are scaled by the factor. The result is 2D hist
 where each bin Projection has the same maximum height.
 The opration is performed on the original Hist!
 arguments:
 TH2* ht        :pointer to hist which should be normalized
 TString axis   :="x" , or "y" depending on the projection
 return values:
 -1 : In the case of zero pointer input or unknown axis argument
  0 : If opreation has been succesful
  3 : TH2 max is 0 (most probably empty).

 Creates a TGraph from hist h. The axis can be exchanged if
 exchange=kTRUE; The Graph does not take empty bins into account.

 Creates a TGraphErrors from hist h. The axis can be excganged if
 exchange=kTRUE; The Graph does not take empty bins into account.

 Puts h into TGraph .
 With xmin/xmax/ymin,ymax a region can be selected.

 Puts h into TGraphErrors .
 With xmin/xmax/ymin,ymax a region can be selected.

 Creates a TH1D from TGraph g. The binwidth of the first bin has to
 specified. The others bins are calculated automatically. Supports also Graphs
 with non constant x steps. The axis of the Graph can be exchanged if
 exchange=kTRUE (modifies the Graph).

 Creates a TH1D from TGraph g. The binwidth of the first bin has to
 specified. The others bins are calculated automatically. Supports also Graphs
 with non constant x steps. The axis of the Graph can be exchanged if
 exchange=kTRUE (modifies the Graph).

 exchanges x-values and y-values.

 exchanges x-values and y-values and
 corresponding errors.

 calulates the integral (culmulative sum) y-values.
 By default all points are used. "first" and "last" defines
 the range of points to integrate (including these points, counting from 0).
 If "first" and "last" are no valid numbers inside the correct
 range the range will be set to 0 and last point depending
 which boundary has been violated.

 scales x-values and y-values with  xscale,yscale.

 scales x-values and y-values with  xscale,yscale.
 scales x Err-values and yErr-values with  xErrscale,yErrscale.

 add shift to x-values and y-values

 loops over TString options and find substrings separated by separator
 and puts them to an array of TStrings. size will hold the size of this
 array and the pointer to the array is returned. If tolower is kTRUE options
 will be made toLower.

 searches name in TString array classes with size size.
 return kTRUE if the string is found.

 reads the hist descriptions from ascii file file.
 Creates the hists found in TString array classes
 with size size and adds them to TObjArray myhists.

 makeHists(TString infile,Int_t evs,TString histdescriptionfile,TString listofClasses)
 Takes all categories in infile and generates generic histograms of all datamembers.
 T->Draw() is used to fill the hists. evs is the number of entries to loop over. if evs=0
 the full size of the tree will be used.
 INPUT:
 histdescriptionfile is the file with description of the histograms to fill (ascii).
 if histdescriptionfile=="" histograms will be filled generic and a histdescription file
 histDescription.txt will be generated in the working directory.
 listofClasses contains a list of Classes which should be taken into account, all other
 classes will be ignored. if listofClasses=="" all classes in infile will be taken.
 OUTPUT:
 I.   a root file treeHists.root will be generated which contains all histograms of the
      selected variables
 II.  if histdescriptionfile has been empty an ascii file treeHistDescription.txt will
      be generated in the working directory.
 III. an ascii file treeHistResults.txt with the analysis results of the hists will be created,
      which can be used for diff of different files.

 Gets histogram with name name from 2 input files and plots them into
 into a canvas. If the canvas pointer is 0 a canvas will be created.
 if padn=1 they will be overlayed in on pad, if pad=2 and comp=0, a
 new canvas with n pads will be created and the 2 hists will be plotted single
 if n=2 and comp not equal 0, the 2 pads of comp will used to draw.

 Gets histogram with name name from 2 input files and compares them by
 mean,rms,range,maximum,maxposition, entries....

 prints information over hist to screen .

 prints information over hist to screen .

 writes information over hist to ascii file .

objects

hists