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syntax

  • log(a)

definition

log(a) is defined as ln(a) or elog a (natural logarithm). log(a) results in null values for negative or zero values of data item a.

applies to

Data item with float32 or float64 value type

since version

5.15

example

attribute<float32> lnA (ADomain) := log(A);
A   lnA
1 0
2 0.69
3.5 1.25
5 1.61
10 2.30
ADomain, nr of rows = 5

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