include/root/THLimitsFinder.h

0001 // @(#)root/hist:$Id$
0002 // Author: Rene Brun   30/08/99
0003
0004 /*************************************************************************
0005  * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011 #ifndef ROOT_THLimitsFinder
0012 #define ROOT_THLimitsFinder
0013
0014
0015 //////////////////////////////////////////////////////////////////////////
0016 //                                                                      //
0017 // THLimitsFinder                                                       //
0018 //                                                                      //
0019 // class to find nice axis limits                                       //
0020 //                                                                      //
0021 //////////////////////////////////////////////////////////////////////////
0022
0023
0024 #include "TObject.h"
0025
0026 class TH1;
0027
0028 class THLimitsFinder : public TObject {
0029
0030 protected:
0031    static THLimitsFinder *fgLimitsFinder;   ///<! Pointer to hist limits finder
0032
0033 public:
0034    THLimitsFinder();
0035    ~THLimitsFinder() override;
0036    virtual Int_t      FindGoodLimits(TH1 *h, Double_t xmin, Double_t xmax);
0037    virtual Int_t      FindGoodLimits(TH1 *h, Double_t xmin, Double_t xmax, Double_t ymin, Double_t ymax);
0038    virtual Int_t      FindGoodLimits(TH1 *h, Double_t xmin, Double_t xmax, Double_t ymin, Double_t ymax, Double_t zmin, Double_t zmax);
0039
0040    static  void       Optimize(Double_t A1,  Double_t A2,  Int_t nold
0041                       ,Double_t &BinLow, Double_t &BinHigh, Int_t &nbins, Double_t &BWID, Option_t *option="");
0042    static void        OptimizeLimits(Int_t nbins, Int_t &newbins, Double_t &xmin, Double_t &xmax, Bool_t isInteger);
0043    static THLimitsFinder *GetLimitsFinder();
0044    static  void       SetLimitsFinder(THLimitsFinder *finder);
0045
0046    ClassDefOverride(THLimitsFinder,0)  //Class to find best axis limits
0047 };
0048
0049 #endif