make a continuous array

My program is running an operation in loop(i=1,2,3,4....) and let the output for

1st value of i =[1 4 7]

2nd value of i =[3 7 4]

3rd value of I =[4 8 2]

I need an output in a row matrix which arranges these values as [1 4 7 3 7 4 4 8 2..........],ie, each output is made in a row, and so on

How can I implement this?

Answer 1

[Rik]

Pre-allocate one row (or preferably the entire matrix), and the use the colon to index the output:

output_mat=zeros(4,3);
for i=1:4
    data=rand(1,3);%generate random values for this example
    output_mat(i,:)=data;
end