Why do I get "Error using matlab.gra​phics.prim​itive.Text​/set The property name 'num2str(k)' is not a valid MATLAB identifier" in the 'title' line of my coding?

for k = 1:2:19

x = x + A*cos((pi/2)-k*2*pi*fc*t)/k;

y((k+1)/2,:) = x;

axis([0 0.05 -4 4]);

xlabel('Time (s)');

ylabel('Amplitude (V)');

title('Sum of ',num2str(k), 'th odd harmonics');

grid on;

end

Answer 1

[Voss]

Calling title like that sends three input arguments to title. This is not what you intend to do. You need to concatenate those three strings first, then send the result to title. Like this:

title(['Sum of ',num2str(k), 'th odd harmonics']);

[Thienesh Marippan]

Thank you so much

[Voss]

You're welcome. If my answer solved the problem, please mark it as 'Accepted'. Thanks!