source: branches/peters_vector/lib/classifier/MatrixLookup.h @ 470

// $Id$

#ifndef _theplu_classifier_matrix_lookup_ 
#define _theplu_classifier_matrix_lookup_ 

#include <c++_tools/classifier/DataLookup2D.h>
#include <c++_tools/gslapi/matrix.h>


namespace theplu {
namespace classifier {  

  

  ///
  /// Interface class for classifier data
  ///

  class MatrixLookup : public DataLookup2D
  {
  
  public:


    ///
    /// Constructor 
    ///
    MatrixLookup(const gslapi::matrix&);

    ///
    /// Constructor taking the row index vector and column index vector 
    /// as input. 
    ///
    MatrixLookup(const gslapi::matrix&, const std::vector<size_t>&, 
             const std::vector<size_t>&);

    ///
    /// Constructor taking the column (default) or row index vector 
    /// as input. 
    ///
    MatrixLookup(const gslapi::matrix&, const std::vector<size_t>&, 
             bool row=false);

    ///
    /// Copy constructor.
    ///
    MatrixLookup(const MatrixLookup&);

    ///
    /// Constructor taking the row index vector and column index vector 
    /// as input. 
    ///
    MatrixLookup(const MatrixLookup&, const std::vector<size_t>&, 
             const std::vector<size_t>&);

    ///
    /// Constructor taking the column (default) or row index vector 
    /// as input. 
    ///
    MatrixLookup(const MatrixLookup&, const std::vector<size_t>&, const bool row=false);

    ///
    /// Destructor
    ///
    ~MatrixLookup() {};

    
    inline double operator()(const size_t row, const size_t column) const
    { return (*data_)(row_index_[row], column_index_[column]); }

  private:
    const gslapi::matrix* data_;
  };  
  
}} // of namespace classifier and namespace theplu

#endif