Rows vs Columns
In this book we use the following convention for 2D arrays: “row” refers to the first index of the array and “column” refers to the second. So for a 2D array A, A(i,j) is the element in row i and column j. The PM command makes this easy to visualize:
a = INTARR( 4, 8 ) & a(2,5) = 1 & PM, a
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |