adding 100 rows in a matrix from different 100 matrices

[Saloni Khurana]

Hello,
I am trying to make a column matrix (100X1) using different 100 matrices? What is the best possible way to do it?

If I write individually for each row, it will be like:
mat A = b1\b2\b3\b4 ........ so on till b100
Is there any way to make it simpler to write?

Thanks in advance

[John Mullahy]

Something like this might work for you

matrix A=J(100,1,.)
forval j=1(1)100 {
 matrix A[`j',1]=b`j'
}
matrix list A

[Mike Lacy]

John may well be right here, but I'm not sure of what your problem is because you did not tell us anything about the dimensions of your "100 different matrices." You presumably know that, but we can only guess.

[John Mullahy]

Mike raises a good point. I took it from the scenario as described in #1 that each of the bj matrixes was 1x1. Probably a better and more general solution (assuming that all the bj matrixes have the same column dimension) is

matrix A=b1
forval j=2(1)100 {
 matrix A=A\b`j'
}
matrix list A

[Saloni Khurana]

Yes. It's 1x1.
Thanks it worked.