Creating a 2-D matrix from a 1-D Array?

Considering that I have an array of A = [150 11 12 134 130 152]. How to replicate these elements in this array to get a matrix of size 256*256.

Answer 1

[Matthew Eicholtz]

Based on your comment to David's answer, how about this?

r = 256; % number of desired rows
c = 256; % number of desired columns
Avec = repmat(A(:),ceil(r*c/length(A)),1); % vector of repeated A values
Anew = reshape(Avec(1:r*c),c,r)'; % new 2-D matrix of size rxc

Answer 2

[David Sanchez]

You do not make clear how you want to replicate your data, but this is a way:

A = [150 11 12 134 130 152];
L = numel(A);  % number of elelments in A

M = zeros(256); % initialize the matrix
% assigin values to first row
for k = 0:floor(256/L)
    M( 1 , (k*L+1):((k+1)*L) ) = A;
end
% make sure you only have your 256 columns
M = M(:,1:256);

% copy first row to the rest of rows
for k=2:256
    M(k,:) = M(1,:);
end

[Sabarinathan Vadivelu]

The overflowed elements in the previous rows should start from the next row.

for example,

150  11  12  134 130 152 150 11  12
134  130 150 11  12  134 130 152 11
12 . . . . . . .
 . . . . . . 
  . . . . . .

Answer 3

[Andrei Bobrov]

out = A(randi(numel(A),256,256));

or

m = 256;
n = 256;
A1 = repmat(A,1,ceil((m+n-1)/numel(A)));
out = hankel(A1(1:m),A1(m:m+n));