how to increase a column with every for loop

Hello Everyone,

let say for example I have two variables y with 25 data and x1 with 25 data. so for 1st iteration I will calculate x1*y. Than for second iteration I have to include a new variable x2 and than I have to calculate x1*y and also x2*y. and similarly with every iteration I have to calculate till x6*y.

Answer 1

[madhan ravi]

With loop:

N = 7;
xy = zeros(numel(x),N); 
xy(:,1) = x .* y; 
for k = 2:N
    xy(:,k) = xy(:,k-1) .* y;
end

Without loop:

XY = cumprod([x .* y, repmat(y,1,N-1)],2);

Answer 2

[Torsten]

column = x.*y;
iter = 0;
while iter < 6
  [calculate new x-vector];
  column = [column ; x.*y];
  iter = iter + 1;
end