/usr/include/casacore/casa/Arrays/MatrixIter.h is in casacore-dev 2.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | //# MatrixIter.h: Iterate a matrix cursor through another array
//# Copyright (C) 1993,1994,1995,1999
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//# Internet email: aips2-request@nrao.edu.
//# Postal address: AIPS++ Project Office
//# National Radio Astronomy Observatory
//# 520 Edgemont Road
//# Charlottesville, VA 22903-2475 USA
//#
//# $Id$
#ifndef CASA_MATRIXITER_H
#define CASA_MATRIXITER_H
#include <casacore/casa/aips.h>
#include <casacore/casa/Arrays/ArrayIter.h>
#include <casacore/casa/Arrays/Matrix.h>
namespace casacore { //# NAMESPACE CASACORE - BEGIN
//
// <summary> Iterate a Matrix cursor through another Array. </summary>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
// </reviewed>
//
// MatrixIterator steps a Matrix (the "cursor") through an array.
// The cursor "refers" to storage in the array, so that changing the
// values in the cursor changes values in the original array.
//
// This class is derived from ArrayIterator; basically it only adds the
// matrix() member function which allows you to access the cursor as a Matrix.
//
// <note role=tip>
// The origin of the cursor, i.e. the subarray that moves through the
// larger array, is always zero.
// </note>
//
// In this example we want to make a "moment" map of a cube, i.e. collapse
// the "Z" axis by averaging it.
// <srcblock>
// Cube<Float> cube;
// MatrixIterator planeIter(cube);
// Matrix<Float> average(planeIter.matrix().copy()); // init with first plane
// planeIter.next(); // advance the iterator
// while (! planeIter.pastEnd()) {
// average += planeIter.matrix(); // Sum the next plane
// planeIter.next();
// }
// average /= Float(cube.shape()(2)); // divide by the number of planes
// </srcblock>
template<class T> class MatrixIterator : public ArrayIterator<T>
{
public:
// Iterate by matrices through array "a".
// The first 2 axes form the cursor axes.
explicit MatrixIterator(Array<T> &a);
// Iterate by matrices through array "a".
// The given axes form the cursor axes.
MatrixIterator(Array<T> &a, uInt cursorAxis1, uInt cursorAxis2);
// Return the matrix at the current position.
Matrix<T> &matrix() {return *(Matrix<T> *)(this->ap_p);}
private:
// Not implemented.
MatrixIterator(const MatrixIterator<T> &);
// Not implemented.
MatrixIterator<T> &operator=(const MatrixIterator<T> &);
};
//
// <summary> Iterate a Matrix cursor through a R/O Array. </summary>
// <reviewed reviewer="UNKNOWN" date="before2004/08/25" tests="" demos="">
// </reviewed>
//
// ReadOnlyMatrixIterator behaves exactly like MatrixIterator (cf.) only
// it should be used on const Arrays.
//
// <note role=tip> Note that the R/O MatrixIterator is not derived from R/O
// ArrayIterator.
// </note>
//
template<class T> class ReadOnlyMatrixIterator
{
public:
// <group>
ReadOnlyMatrixIterator(const Array<T> &a) :
mi(const_cast<Array<T>&>(a)) {}
ReadOnlyMatrixIterator(const Array<T> &a,
uInt cursorAxis1, uInt cursorAxis2)
: mi(const_cast<Array<T>&>(a), cursorAxis1, cursorAxis2) {}
void next() {mi.next();}
void reset() {mi.origin();}
void origin() {mi.origin();}
const Array<T> &array() {return mi.array();}
const Matrix<T> &matrix() {return mi.matrix();}
Bool atStart() const {return mi.atStart();}
Bool pastEnd() const {return mi.pastEnd();}
const IPosition &pos() const {return mi.pos();}
IPosition endPos() const {return mi.endPos();}
uInt ndim() const {return mi.ndim();}
// </group>
private:
// Not implemented.
ReadOnlyMatrixIterator(const ReadOnlyMatrixIterator<T> &);
// Not implemented.
ReadOnlyMatrixIterator<T> &operator=(const ReadOnlyMatrixIterator<T> &);
MatrixIterator<T> mi;
};
} //# NAMESPACE CASACORE - END
#ifndef CASACORE_NO_AUTO_TEMPLATES
#include <casacore/casa/Arrays/MatrixIter.tcc>
#endif //# CASACORE_NO_AUTO_TEMPLATES
#endif
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