delete a NAN but leave a zero instead to be later taken out

Ok so as the question says I want to delete the NAN without deleting the row as it messes up my data, instead I want a zero to be left in its place so I can take it out later (which is successful).

NaN  0

1  3
1  3
1  3
2  4
2  4
2  4
3  1
3  1
3  1
4  2
4  2
4  2
NaN  0
5  4

Answer 1

[George Papazafeiropoulos]

A=[NaN 0; 1 3; 1 3; 1 3; 2 4; 2 4; 2 4; 3 1; 3 1; 3 1; 4 2; 4 2; 4 2; NaN 0; 5 4];

sizA=size(A,1);

A=A(:);

A(isnan(A))=0;

A=reshape(A,sizA,[])