I know this is probably one of the easiest thing to do, but right now, I am stuck at it. I have got 2 Arrays. One is 55618x4 (A) and the other one is 1819x1 (B).
2 -20.8047047000000 -9 -9
According to the number in the first column, the information from the three other columns should be written from array A to array B. So I need something like this:
I can find the rows I need, but how can I fill the array?