Insert array into matrix within a loop

I have a matrix X (N,100), i have a function which calculate for each column of X another array h(1,50), a would like to calculate for each column of X(N,:) a vector h and making them all in a matrix H(100,50). Can someone help

Answer 1

[Andrei Bobrov]

m = size(X,2);
out = zeros(m,50);
for ii = 1:m
    out(ii,:) = your_function(X(:,ii));
end

[tilfani oussama]

with this code i get only the last value at the array = m for others it still 0

[Jos (10584)]

Andrei made a small mistake:

use out(ii,:) = ...

rather than out(m,:) = ...

[tilfani oussama]

yes i did it works Thank you

[Andrei Bobrov]

Thank you Jos! I am corrected.

Answer 2

[Jos (10584)]

Just to make sure: X has 100 columns, You have a function that takes a column and returns a row-vector of 50 columns. And now you want to do this for each column of X and stack all results in a 100-by-50 array. Something like this will help you:

myfun = @(c) [1:50] * mean(c(:)) ;
% just a function that takes a (column) vector and returns a 1-by-50 vector

C = arrayfun(@(k) myfun(X(:,k)), 1:size(X,2), 'un', 0) ; % apply to each column of X
h = cat(1,C{:}) ; % stack each 1-by-50 cell into an array