MATLAB: Input to num2str must be numeric.

MATLABnum2str

clc;
disp('a')
syms H zeta
omega = 1;
solve(H == 1/sqrt((1-omega^2)^2 + (2*zeta*omega)^2),zeta);
H = [10 5 2.66 1 0.5];
for i=1:5
    zetas(i) = 1/(2*H(i));
end
disp([' Damping Factor for system 1 = ' num2str(zetas(1)) ''])
disp([' Damping Factor for system 2 = ' num2str(zetas(2)) ''])
disp([' Damping Factor for system 3 = ' num2str(zetas(3)) ''])
disp([' Damping Factor for system 4 = ' num2str(zetas(4)) ''])
disp([' Damping Factor for system 5 = ' num2str(zetas(5)) ''])
disp('----------------x---------------')
disp('b')
clear omega
syms omega
for i=1:3
    omegas = solve(1 == 1/sqrt((1-omega^2)^2 + (2*zetas(i)*omega)^2));
    omega_star(i) = max(omegas);
end
disp([' Omeaga* for system 1 = ' num2str(omega_star(1)) ''])
disp([' Omeaga* for system 2 = ' num2str(omega_star(2)) ''])
disp([' Omeaga* for system 3 = ' num2str(omega_star(3)) ''])
Getiing error for num2str(omega_star).... Input to num2str must be numeric.
 It works for the disp([' Damping Factor for system 1 = ' num2str(zetas(1)) ''])

Best Answer

Use double() because omega_star is of symbolic class , ofcourse it can be acheived using fprintf() or sprintf()
num2str(double(omega_star(1))) % do the same for the rest
Related Question