moving-median

Computes a running median from a stream of values. Useful for filtering noisy signals.

Example

var createMedianFilter = require('moving-median')
var median = createMedianFilter(5)
 
var sequence = [1, 2, 5, 2, 1, 1, 1, 2, 1000, 2, NaN, 3, NaN, 3, 3]
 
for(var i=0; i<sequence.length; ++i) {
  console.log(median(sequence[i]))
}

Install

npm i moving-median

API

var median = require('moving-median')(windowSize)

Creates a new median filter

• windowSize is the number of samples in the median

Returns A function which accepts samples

var m = median(sample)

Compute the running median of the last windowSize samples.

• sample is the next sample to add

Returns The median of the last windowSize samples

License

(c) 2015 Mikola Lysenko. MIT License