Calculates the natural logarithm of the sum of field's value and 1. For
small values of 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).
Function Traits: FieldComputationFunction
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
as | string | optional | _log1p | The name of the output field. |
field[a] | string | required | The name of the input field. | |
The parameter name for field can be omitted; the following forms are equivalent:
logscale
math:log1p("value")and:
logscale
math:log1p(field="value")