convert complex matrix to 3D plot

i have a complex matrix (480*640double) ,i cant plot it to 3D coz i had ??? Error using ==> mesh at 80 X, Y, Z, and C cannot be complex.

 plzzzzz how to solve it?????

Answer 1

[Kye Taylor]

Create a domain

[X,Y] = meshgrid(linspace(-pi,pi));

Evaluate f(z) = log(z) for complex z. F is a complex matrix that represents the complex natural log over the imaginary plane

F = log(X+sqrt(-1)*Y);

Visualize all three components of F:

figure,surf(X,Y,abs(Z)),title('magnitude of F'),xlabel('real'),ylabel('complex')
figure,surf(X,Y,real(Z)),title('Real values of F'),xlabel('real'),ylabel('complex')
figure,surf(X,Y,imag(Z)),title('Complex values of F'),xlabel('real'),ylabel('complex')

[fatin]

a=imread('example.bmp','bmp');

>> b=ifft2(a);

>> c=fftshift(b);

>> [X,Y] = meshgrid(linspace(-pi,pi));

>> F = log(X+sqrt(-1)*Y);

>> F(z)=log(z);

??? Undefined function or variable 'z'.

i get this error ,i replaced the (z) in ur prog. with the (c) in mine but couldnt hav a result 2... thank u 4 ur time but hope u can help me more with it...

[Walter Roberson]

Skip the F(z)=log(z); line: it was theoretical rather than actual code.

[Dr. Deepak Kumar Rout]

Replace F = log(X+sqrt(-1)*Y) with Z = log(X+sqrt(-1)*Y);