I want to pad zeros in the the array of 126*126 ... how to do it... ??

a row of zeros in the start of matrix 126*126 also at the end of it , similarly column of zeros in the start and in the end of matrix 126*126

Answer 1

[Image Analyst]

If you have the Image Processing Toolbox, you can use padarray:

out = padarray(m, 1, 'both');

Answer 2

[Roger Stafford]

Let M be your matrix:

 [m,n] = size(M);
 M = [zeros(1,n+2);zeros(m,1),M,zero(m,1);zeros(1,n+2)];