Calculates a entropy measure from a string of characters.
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
as | string | false | _shannonentropy | The output name of the field to set. |
field | string | true | The name of the input field. |
Examples
Shows how to calculate a shannon entropy value for the string in a field. An input event with the field "dns_name" with the value "example.com" results in the field "entropy" having the rounded value 3.095795.
humio
entropy := shannonEntropy(dns_name)