How to make a matrix of all zeros be the same size as a data set being used?

I've been playing around with matlab for the last few hours and can't figure it out. I am using quiver and my x,y are staying the same and my v is staying the same just need to make my 'u' into a matrix of all zeros. I keep getting this error "Error using zeros Size vector should be a row vector with real elements." not sure what I am doing wrong. Thanks in advance for any help provided.

[James Tursa]

Please post the code you are currently using. It is hard for us to guess the errors you are making without seeing your code.

Answer 1

[Bjorn Gustavsson]

Something like this:

u = zeros(size(v));

HTH

[Timothy Clarke]

Thank you