WSJT-X/boost/libs/numeric/ublas/doc/samples/matrix_range.cpp

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C++

//
// Copyright (c) 2000-2002
// Joerg Walter, Mathias Koch
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// The authors gratefully acknowledge the support of
// GeNeSys mbH & Co. KG in producing this work.
//
#include <boost/numeric/ublas/matrix.hpp>
#include <boost/numeric/ublas/matrix_proxy.hpp>
#include <boost/numeric/ublas/io.hpp>
int main () {
using namespace boost::numeric::ublas;
matrix<double> m (3, 3);
matrix_range<matrix<double> > mr (m, range (0, 3), range (0, 3));
for (unsigned i = 0; i < mr.size1 (); ++ i)
for (unsigned j = 0; j < mr.size2 (); ++ j)
mr (i, j) = 3 * i + j;
std::cout << mr << std::endl;
}