rowPrev

Syntax

rowPrev(X)

Please see rowFunctions for the parameters and calculation rules.

Details

For each row in X, rowPrev shifts the elements to the right for one position.

Returns

An object with the same data type and form as X.

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)
// output: [[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)
// output: [[00F,1.3,2.5],[00F,4.1,5.3]]