Calculates a entropy measure from a string of characters.

ParameterTypeRequiredDefaultDescription
asstringfalse_shannonentropyThe output name of the field to set.
fieldstringtrue The name of the input field. [a]

[a] When you provide only one parameter, the implied parameter is 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)