SortRowsVMatrix.h

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// -*- C++ -*-

// PLearn (A C++ Machine Learning Library)
// Copyright (C) 2003 Olivier Delalleau
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
// NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org


/* *******************************************************      
   * $Id: SortRowsVMatrix.h,v 1.5 2004/06/18 16:45:02 tihocan Exp $
   ******************************************************* */


#ifndef SortRowsVMatrix_INC
#define SortRowsVMatrix_INC

#include "SelectRowsVMatrix.h"

namespace PLearn {
using namespace std;
 
class SortRowsVMatrix: public SelectRowsVMatrix
{

private:

  typedef SelectRowsVMatrix inherited;

public:

  int increasing_order;
  TVec<int> sort_columns;

public:

  SortRowsVMatrix();

  PLEARN_DECLARE_OBJECT(SortRowsVMatrix);

  static void declareOptions(OptionList &ol);

  virtual void build();
  virtual void makeDeepCopyFromShallowCopy(map<const void*, void*>& copies);

private:

  void build_();

  static void sortRows(
      VMat& m, TVec<int>& indices, TVec<int>& sort_columns,
      int istart, int iend, int colstart, bool increasing_order);

};

DECLARE_OBJECT_PTR(SortRowsVMatrix);

} // end of namespace PLearn
#endif

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