Creating a matrix one row at a time

In each iteration of a loop I create a row vector

Y = [1,2,3,4,5];

then I want to add the Y's to a matrix one line at a time;

A(i) = Y;

How do I do this and why can't I find an example on line?

Thanks

Answer 1

[TADA]

A(i,:) = Y;

Don't Forget To Preallocates Your Matrix:

A = zeros(n, m);

Where n Would Be The Number Of Rows ( Iterations) And m Is The Length Of The Rows (5 In Your Example)

Another Approach Is To Concat The Rows At The End Of He Matrix:

A = [A;Y];

This Would Reallocate The Entire Matrix Each Iteration, so For Larger Datasets It Would Take Forever, so It's Better To Avoid This Practice.

Asfor Not Finding An Example, https://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html