FirstCols, FirstRows -- submatrix of the first N cols or rows |
Syntax |
FirstCols(M: MAT, N: INT): MAT FirstRows(M: MAT, N: INT): MAT |
Description |
Example |
/**/ M := mat([[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15]]); /**/ FirstCols(M, 3); -- same as submat(M, 1..3, 1..3); matrix(QQ, [[1, 2, 3], [6, 7, 8], [11, 12, 13]]) /**/ FirstRows(M, 2); -- same as submat(M, 1..2, 1..5); matrix(QQ, [[1, 2, 3, 4, 5], [6, 7, 8, 9, 10]]) |
See Also |