math:log1p( ) Query Function

Calculates the natural logarithm of the sum of field’s value and 1. For small values x, the result of log1p(x) is much closer to the true result of ln(1 + x) than the floating-point evaluation of log(1.0+x)

Parameters

Name Type Required Default Description
field string Yes The name of the input field.
as string No _log1p The name of the output field.

field is the unnamed parameter.