Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppBoostUblasMatrixExample2/CppBoostUblasMatrixExample2.pro


include(../../ConsoleApplication.pri) #Or use the code below

# QT += core

# QT += gui

# greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

# CONFIG   += console

# CONFIG   -= app_bundle

# TEMPLATE = app

# CONFIG(release, debug|release) {

#   DEFINES += NDEBUG NTRACE_BILDERBIKKEL

# }

# QMAKE_CXXFLAGS += -std=c++1y -Wall -Wextra -Weffc++

# unix {

#   QMAKE_CXXFLAGS += -Werror

# }



include(../../Libraries/Boost.pri) #Or use the code below

# win32 {

#   INCLUDEPATH += \

#     ../../Libraries/boost_1_54_0

# }



SOURCES += main.cpp

./CppBoostUblasMatrixExample2/main.cpp


#include <boost/numeric/ublas/matrix.hpp>





const boost::numeric::ublas::matrix<int> CreateMatrix(const int n_cols, const int n_rows)

{

  boost::numeric::ublas::matrix<int> m(n_rows,n_cols); //y-x-ordered

  for (int y = 0; y != n_rows; ++y)

  {

    for (int x = 0; x != n_cols; ++x)

    {

      m(y,x) = (y * 10) + x;

    }

  }

  return m;

}



int main()

{

  const int n_cols = 3;

  const int n_rows = 2;

  const boost::numeric::ublas::matrix<int> m = CreateMatrix(n_cols,n_rows);



  //boost::numeric::ublas::matrix is y-x-ordered

  assert(m(0,0) ==  0); assert(m(0,1) ==  1); assert(m(0,2) ==  2);

  assert(m(1,0) == 10); assert(m(1,1) == 11); assert(m(1,2) == 12);



  //Transpose

  const boost::numeric::ublas::matrix<int> n = boost::numeric::ublas::trans(m);

  assert(n(0,0) ==  0); assert(n(0,1) == 10);

  assert(n(1,0) ==  1); assert(n(1,1) == 11);

  assert(n(2,0) ==  2); assert(n(2,1) == 12);

}

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(C++) BoostUblasMatrixExample2

Technical facts

Qt project file: ./CppBoostUblasMatrixExample2/CppBoostUblasMatrixExample2.pro

./CppBoostUblasMatrixExample2/main.cpp