MATLAB: Delete zeros rows and columns

Question

i try do delete rows and columns that are zeros but it cut also part of shape .I use this code

u=I;
old=[];
new=all(~u);
while ~isequal(old,new)
    u(new,:)=0;
    old=new;
    new=all(~u);
end
 u(new,:)=[];
 u(:,new)=[];
       av=u;
       av(~any(u,2),:)=[];
   %radious of puple
  figure, imshow(av,[]);

so any other way to do that

Answer 1

u = I;
zc = ~any(u);
u(:,zc) = [];
zr = ~any(u,2);
u(zr,:) = [];