rowPrev
Syntax
rowPrev(X)
Please see Row-Based Functions for the parameters and calculation rules.
Details
For each row in X, rowPrev
shifts the elements to the right for one position.
Examples
$ m=matrix([4.5 2.6 1.5, 1.5 4.8 5.9, 4.9 2.0 NULL])
$ rowPrev(m)
col1 col2 col3
4.5 1.5
2.6 4.8
1.5 5.9
$ a=array(INT[], 0, 10).append!([1 2 3, 4 5, 6 7 8]);
$ rowPrev(a)
[[00i,1,2],[00i,4],[00i,6,7]]
$ tp = [[1.3,2.5,2.3], [4.1,5.3,6.2]]
$ tp.setColumnarTuple!()
$ rowPrev(tp)
[[00F,1.3,2.5],[00F,4.1,5.3]]