Error in function 'quiver' during rectangular waveguide design

Error occurred in function quiver of the following code. I think it's because of a variable that has a value of zero. Is there a solution?

Note : The error message on the right is "Error occurred during use: quiver (Line 58) U and V must be the same size.

[KALYAN ACHARJYA]

Please share the code {code format} not an image?

[Geoff Hayes]

@건희 이 - according to the error message,

U and V must be the same size.

I think this is because the real(Ex) is a scalar (1x1) due to

Ex = 0

whereas real(Ey) is an array (because x is an array). You may want to review the documentation for quiver to get an idea of what U and V should be.

Answer 1

[Walter Roberson]

Ex = zeros(size(Ey)) ;