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2 * Software License Agreement (BSD License)
4 * Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
5 * Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
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29 *************************************************************************/
41 * Class implementing a generic rectangular dataset.
47 * Flag showing if the class owns its data storage.
51 void shallow_copy(const Matrix& rhs)
65 Matrix(long rows_, long cols_, T* data_ = NULL) :
66 ownData(false), rows(rows_), cols(cols_), data(data_)
69 data = new T[rows*cols];
74 Matrix(const Matrix& d)
79 const Matrix& operator=(const Matrix& rhs)
95 * Operator that return a (pointer to a) row of the data.
97 T* operator[](long index)
99 return data+index*cols;
102 T* operator[](long index) const
104 return data+index*cols;
109 Matrix<T>* sample(long size, bool remove = false)
111 UniqueRandom rand(rows);
112 Matrix<T> *newSet = new Matrix<T>(size,cols);
115 for (long i=0;i<size;++i) {
116 long r = rand.next();
119 for (long j=0;j<cols;++j) {
123 dest = (*this)[rows-i-1];
125 for (long j=0;j<cols;++j) {
140 Matrix<T>* sample(long size) const
142 UniqueRandom rand(rows);
143 Matrix<T> *newSet = new Matrix<T>(size,cols);
146 for (long i=0;i<size;++i) {
147 long r = rand.next();
150 for (long j=0;j<cols;++j) {