how to reshape a matrix?

I have a matrix that it is 321*531. It includes NaN values, which i have to eliminate them. Thus, I used this code:

m=~isnan(x);

v=x(m)';

then it turned to 1*75638. I wanna reshape it to 321*531,but I don't know how can I do this.I have tried reshape function,but it doesn't work.

please help me. thanks

[José-Luis]

Well, if there are NaN's and you eliminate them, your matrix can not keep its same shape unless you replace them with something else. What's it gonna be?

[Stephen23]

@navid zed: the number of elements that you have 75638 is not divisible by the number of rows that you want 321:

 >> 75638/321
 ans =  235.63

What do you imagine happening, should MATLAB magically invent some data to fill in the gap?

Answer 1

[adi kul]

If you are okay with replacing NaN values with Zeros then:

A(isnan(A))=0

Here A will be your matrix.