C++ Armadillo :: Real and Imaginary part
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Description::
This is the basic C++ program of C++ armadillo library which shows how to find real and imaginary part of the given matrix. It can be carried out by the help of inbuilt functions "real" and "imag" in armadillo library.
It is used to extract the imaginary/real part of a complex matrix or cube
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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
cx_mat C = randu<cx_mat>(5,5); //Generating a matrix of 5 x 5
mat A = imag(C); //Imaginary part of matrix
mat B = real(C); //Real part of matrix
cout << "Matrix C::\n"<<endl; cout << C << endl;
cout << "Matrix A(Imaginary part)::\n"<<endl; cout << A << endl;
cout << "Matrix B(Real part)::\n"<<endl;
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 C::
(+7.868e-01,+2.505e-01) (+2.742e-01,+5.610e-01) (+2.393e-01,+3.201e-01) (+4.599e-01,+2.573e-01) (+5.050e-01,+6.962e-01)
(+7.107e-01,+9.467e-01) (+1.400e-01,+5.439e-01) (+9.105e-01,+1.648e-01) (+7.770e-01,+5.839e-01) (+9.122e-02,+9.071e-01)
(+1.927e-02,+4.049e-01) (+5.219e-01,+8.571e-01) (+2.455e-01,+1.983e-01) (+9.503e-01,+4.381e-01) (+3.091e-02,+1.520e-01)
(+2.513e-01,+2.271e-02) (+4.998e-01,+4.194e-01) (+7.159e-01,+9.678e-01) (+3.223e-01,+5.324e-01) (+9.815e-01,+6.204e-01)
(+5.206e-01,+3.447e-01) (+7.443e-01,+2.492e-01) (+7.694e-01,+8.071e-02) (+2.564e-01,+4.554e-02) (+2.988e-01,+3.613e-01)
Matrix A(Imaginary part)::
0.2505 0.5610 0.3201 0.2573 0.6962
0.9467 0.5439 0.1648 0.5839 0.9071
0.4049 0.8571 0.1983 0.4381 0.1520
0.0227 0.4194 0.9678 0.5324 0.6204
0.3447 0.2492 0.0807 0.0455 0.3613
Matrix B(Real part)::
0.7868 0.2742 0.2393 0.4599 0.5050
0.7107 0.1400 0.9105 0.7770 0.0912
0.0193 0.5219 0.2455 0.9503 0.0309
0.2513 0.4998 0.7159 0.3223 0.9815
0.5206 0.7443 0.7694 0.2564 0.2988
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