MATLAB: How to intialize a data store with 100000 zeros

data store memoryintialization

How to intialize a data store with 100000 zeros?

zeros(1,100000)

If you want to add a dark edge (that's what the zeros will be), at the bottom and to the right:

load mandrill
[m n] = size(X); %in your case it will be [1023 1023]

X = [ [X;zeros(1,n)] zeros(m+1,1)];

At the top and to the left:

load mandrill
[m n] = size(X); %in your case it will be [1023 1023]
X = [ zeros(m+1,1) [zeros(1,n);X] ];

Plus the two other alternatives, with the same principle:

 X = [[zeros(1,n);X] zeros(m+1,1)];
 X = [ zeros(m,1) [X;zeros(1,n+1)] ];

Refer to padarray function.