C++ Armadillo :: Transpose of Matrix














































C++ Armadillo :: Transpose of Matrix



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Description::
This is the basic C++ program of C++ armadillo library which shows how to get the transpose of the given matrix of some particular size. It can be carried out in 2 ways that is by the help of inbuilt function "trans" in armadillo library or by the function ".t()". "trans" function takes just one parameter i.e the input matrix name while ".t()" function doesn't take any parameter. It can be called by input matrix as shown ::-> A.t();
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Program::

#include <iostream>
#include <armadillo>
using namespace std;
using namespace arma;

int main()
{
//initialize the random generator
//Create a 5 x 5 random matrix and printing it
mat A = randu<mat>(5,5);
mat B = trans(A); //calculating transpose of matrix A and storing in B by trans function mat C = A.t(); //calculating transpose of matrix A and storing in C by .t() function
cout << "Matrix A::\n"<<endl;
cout<< A << endl;
cout << "Matrix B(Trans of matrix)::" << endl; //displaying cout<< B << endl;
cout << "Matrix C(Trans of matrix)::" << endl; //displaying cout<< B << endl;
return 0; }
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Commands to run program on terminal::
$ g++ filename.cpp -o objectname -O2 -larmadillo

$ ./objectname
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Output::

Matrix A:: 0.7868 0.4049 0.2742 0.8571 0.2393 0.2505 0.2513 0.5610 0.4998 0.3201 0.7107 0.0227 0.1400 0.4194 0.9105 0.9467 0.5206 0.5439 0.7443 0.1648 0.0193 0.3447 0.5219 0.2492 0.2455 Matrix B:: 0.7868 0.2505 0.7107 0.9467 0.0193 0.4049 0.2513 0.0227 0.5206 0.3447 0.2742 0.5610 0.1400 0.5439 0.5219 0.8571 0.4998 0.4194 0.7443 0.2492 0.2393 0.3201 0.9105 0.1648 0.2455 Matrix C:: 0.7868 0.2505 0.7107 0.9467 0.0193 0.4049 0.2513 0.0227 0.5206 0.3447 0.2742 0.5610 0.1400 0.5439 0.5219 0.8571 0.4998 0.4194 0.7443 0.2492 0.2393 0.3201 0.9105 0.1648 0.2455

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