Creating a matrix index

I have a 10 by 1 matrix of numbers between 1 and 10, lets call it Z. I want to create a matrix, where say it is 5 by 10, where it takes the number from the first row in Z, say 5, and then creates a row in the new 5 by 10 matrix where the first row would be 0 0 0 0 1 0 0 0 0 0 , basically placing a 1 in the column dictated by the number from the Z matrix, can anyone help me?

Cheers, Edward

[KALYAN ACHARJYA]

Explain: Consider a Matrix as an example and what result you are expecting?

Answer 1

[Cesar Antonio Lopez Segura]

Hi Edward,

Here your question is answered:

Z = [ 5,1,3,6,7,8,9,10,4,6]'; 
size(Z)  % check matrix size
Matrix5by10 = zeros(5,10); % create a zero matrix
% Your question is answered here:
Matrix5by10( 1,Z( 1 ) ) = 1 % write matrix 5 by 10 been Z a colum indicator

If you need a loop, here you can find the solution:

% Iterative example
for i = 1:5;  Matrix5by10( i ,Z( i ) ) = 1; end; Matrix5by10