how to store vectors into matrix

I have a vector which takes different values ​​at each iteration I would like to store the result of the vectors in a matrix example iteration 1 A = [1 2 3 4] iteration 2 A = [5 6 7 8] so I will want a result matrix: result = [1 2 3 4; 5 6 7 8]

Answer 1

[KSSV]

m = 10 ; n = 4 ;
A = zeros(m,n) ; 
for i = 1:m
    A(i,:) = rand(1,n) ; 
end

Answer 2

[David Hill]

for k=1:100
    A(k,:)=randi(100,1,4);%your vectors
end

Answer 3

[Image Analyst]

Try this:

result = zeros(numIterations, 4);
for k = 1 : numIterations
    % Get A somehow, then
    result(k, :) = A;
end

Answer 4

[Ruger28]

A = [1 2 3 4];
B = [5 6 7 8];
C = [A;B]

In a loop:

Sum_Matrix = []; % pre-allocate if you know how many total elements in array you'll have
A = [1 2 3 4];
for ii = 1:100 % number of iterations
    % whatever math to get you your vector
    B = A * ii; % example 
    Sum_Matrix = [Sum_Matrix;B];
end

[amina amzgh]

it works perfectly , i just donc need to multiply ii by A ....

i really thank u a lot...........

[Ruger28]

You're welcome.

Answer 5

[Image Analyst]

If the "A" is really as predictable as you implied in your comment to Ruger28 (and not general as I assumed in my Answer), and you want a vectorized way to do it, you can use reshape:

numIterations = 5; % Whatever you want/need.
result = reshape([1 : numIterations*4]', 4, [])'

You get:

result =

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

17 18 19 20

Of course, this vectorized version is the more MATLAB-y way to do it. No for loops are needed at all. (This way also uses your preferred and better variable name of "result".)