rowMove

Syntax

rowMove(X, steps)

Please see Row-Based Functions for the parameters and calculation rules.

Arguments

steps is an integer indicating the length to shift the row elements of X.

  • if steps is positive, the elements in each row are shifted to the right by steps position(s).

  • if steps is negative, the elements in each row are shifted to the left by steps position(s).

  • if steps is 0, X is not shifted.

Details

The rowMove function shifts the elements in each row of X left or right by a specified number of steps.

Examples

$ m=matrix([4.5 2.6 1.5, 1.5 4.8 5.9, 4.9 2.0 NULL])
$ rowMove(m, 2)
col1        col2    col3
                                    4.5
                                    2.6
                                    1.5

$ rowMove(m, -2)
col1        col2    col3
4.9
2
    NULL    NULL   NULL

$ a=array(INT[], 0, 10).append!([1 2 3, 4 5, 6 7 8]);
$ rowMove(a, 2)
[[00i,00i,1],[00i,00i],[00i,00i,6]]

$ tp = [[1.3,2.5,2.3], [4.1,5.3,6.2]]
$ tp.setColumnarTuple!()
$ rowMove(tp, -2)
[[2.3,00F,00F],[6.200000000000001,00F,00F]]