Absolute value: abs

Syntax

abs ( op )

Input parameters

op	the operand

Examples of valid syntaxes

abs ( DS_1 )
abs ( -5 )

Semantics for scalar operations

The operator abs calculates the absolute value of a number. For example:

abs ( -5.49 ) gives 5.49

abs ( 5.49 ) gives 5.49

Input parameters type

op

dataset { measure<number> _+ }
| component<number>
| number

Result type

result

dataset { measure<number [ value >= 0 ]> _+ }
| component<number [ value >= 0 ]>
| number [ value >= 0 ]

Additional Constraints

None.

Behavior

The operator has the behaviour of the “Operators applicable on one Scalar Value or Data Set or Data Set Component” (see the section “Typical behaviours of the ML Operators”).

Examples

Given the operand dataset DS_1:

Input DS_1 (see structure)

Id_1	Id_2	Me_1	Me_2
10	A	0.484183	0.7545
10	B	-0.515817	-13.45
11	A	-1.000000	187.0

Example 1

DS_r := abs ( DS_1 );

results in (see structure):

DS_r
Id_1	Id_2	Me_1	Me_2
10	A	0.484183	0.7545
10	B	0.515817	13.45
11	A	1.000000	187

Example 2

DS_r := DS_1 [ calc Me_10 := abs(Me_1) ];

results in (see structure):

DS_r
Id_1	Id_2	Me_1	Me_2	Me_10
10	A	0.484183	0.7545	0.484183
10	B	-0.515817	-13.45	0.515817
11	A	-1.000000	187.0	1.000000