$ npm install binary-shannon-entropyCalculate the shannon entropy of a buffer.
var calc = require('binary-shannon-entropy');
calc(Buffer('aaaaa')); // => 0
calc(Buffer('fffff')); // => 0
calc(Buffer('aafaa')); // => 0.7219280948873623
calc(Buffer('abcdef')); // => 2.584962500721156
$ npm install binary-shannon-entropy
Return a number between 0 and 8, giving the Shannon entropy to the base of 2.
Optionally limit the area in the buffer to inspect by start and end.
H = -Sum(P_i * log2(P_i))
MIT