Reverse

ordering-functions reverse

syntax

reverse(a)

definition

reverse(a) reverses the sequence of the values of attribute a. The function results in a new attribute with the same values-unit and domain-unit as attribute a and with the values of attribut a in reversed order.

applies to

attributes with Numeric, Point or bool value-type

example

attribute<float32> reverseA (ADomain) := reverse(A);
A reverseA
0 100
1 null
2.5 0
-100 null
999 null
null 999
null -100
0 2.5
null 1
100 0

ADomain, nr of rows = 10

see also