I would like to konw which method give the best result for the matrix with the number between 0 et 1:
==> I have two matrix A and B, 0<=Aij<=1, 0<= Bij<=1
Which metho gives the best results :
1- IML Proc
2- proc sql
do i=1 to L;
create table prod as
select (...)+(....) as Vi
t1 m ,Tran_t2 n;
Any documentation for that are welcomed
For matrix computations, use IML.
Your title says "matrix product," by which I assume you want the standard matrix multiplication:
C = A*B;
However, read this article "Ways to multiply in the SAS/IML language" if you want a different product.
As I said, you should use IML for matrix computations.
All SAS procedures use double precision computations. If your numbers are so small that you think the computation will result in a numerical overflow or underflow, it probably doesn't make a difference how you perform the computation. If you post the data and a sample program, we might be able to say more.
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