Matrix dimension must agree

w = [0:1:500]*pi/500;

X = exp(j*w)./(exp(j.*w) - 0.5.*ones(1,500));

magx = abs(X); angX = angel(X);

subplot(2,2,1); plot(w/pi,magX); grid

xlabel('frequency in pi units'); title('Magnitude Part'); ylabel('Magnitude')

subplot(2,2,3); plot(w/pi,angX); grid

xlabel('frequency in pi units'); title('Angel Part'); ylabel('Radians')

subplot(2,2,2); plot(w/pi,realX); grid

xlabel('frequency in pi units'); title('Real Part'); ylabel('Real')

subplot(2,2,4); plot(w/pi,imagX); grid

xlabel('frequency in pi units'); title('Imaginary Part'); ylabel('Imaginary')

ERROR:

Error using -

Matrix dimensions must agree.

Answer 1

[Alan Stevens]

w is size 1x501 not 1x500.

[Muhammad Fauzan]

Error Just in line 2

Answer 2

[Ameer Hamza]

There are several syntax error in your code. Compare following with your code to see the mistakes.

w = (0:1:500)*pi/500;
X = exp(1j*w)./(exp(1j.*w) - 0.5.*ones(1,501));
magx = abs(X); angX = angle(X);
realX = real(X); imagX = imag(X);
subplot(2,2,1); plot(w/pi,magx); grid
xlabel('frequency in pi units'); title('Magnitude Part'); ylabel('Magnitude')
subplot(2,2,3); plot(w/pi,angX); grid
xlabel('frequency in pi units'); title('Angel Part'); ylabel('Radians')
subplot(2,2,2); plot(w/pi,realX); grid
xlabel('frequency in pi units'); title('Real Part'); ylabel('Real')
subplot(2,2,4); plot(w/pi,imagX); grid
xlabel('frequency in pi units'); title('Imaginary Part'); ylabel('Imaginary')