Histogram.js

npmihistogramjsvarhist=require('histogramjs')

Frequency sort an array of data. Ripped from d3.js. this histogram function is fully self contained and can be dropped easily into project.

It was created originally for use with webworkers.

histogram({
data : Array,
bins : Array
})

Example.

varhistogram=require('./histogram')varlinspace=functionlinspace(a,b,n){if(typeofn==="undefined")n=Math.max(Math.round(b-a)+1,1);if(n<2){returnn===1?[a]:[];}vari,ret=Array(n);n--;for(i=n;i>=0;i--){ret[i]=(i*b+(n-i)*a)/n;}returnret;}varx=linspace(0,12,100),y=[],num;for(vari=0;i<2000;i++){num=-Math.log(Math.random())y.push(num)}vardata=histogram({data : y,bins : x})for(vari=0;i<data.length;i++){console.log('['+data[i].x+','+data[i].y+'],')}

Run in node, it produces this distribution.