https://www.brh.ht/Chart/samples/utils.js

1'use strict';window.chartColors={red:'rgb(255, 99, 132)',orange:'rgb(255, 159, 64)',yellow:'rgb(255, 205, 86)',green:'rgb(75, 192, 192)',blue:'rgb(54, 162, 235)',purple:'rgb(153, 102, 255)',grey:'rgb(201, 203, 207)'};(function(global){var Months=['January','February','March','April','May','June','July','August','September','October','November','December'];var COLORS=['#4dc9f6','#f67019','#f53794','#537bc4','#acc236','#166a8f','#00a950','#58595b','#8549ba'];var Samples=global.Samples||(global.Samples={});var Color=global.Color;Samples.utils={srand:function(seed){this._seed=seed;},rand:function(min,max){var seed=this._seed;min=min===undefined?0:min;max=max===undefined?1:max;this._seed=(seed*9301+49297)%233280;return min+(this._seed/233280)*(max-min);},numbers:function(config){var cfg=config||{};var min=cfg.min||0;var max=cfg.max||1;var from=cfg.from||[];var count=cfg.count||8;var decimals=cfg.decimals||8;var continuity=cfg.continuity||1;var dfactor=Math.pow(10,decimals)||0;var data=[];var i,value;for(i=0;i<count;++i){value=(from[i]||0)+this.rand(min,max);if(this.rand()<=continuity){data.push(Math.round(dfactor*value)/dfactor);}else{data.push(null);}}
2return data;},labels:function(config){var cfg=config||{};var min=cfg.min||0;var max=cfg.max||100;var count=cfg.count||8;var step=(max-min)/count;var decimals=cfg.decimals||8;var dfactor=Math.pow(10,decimals)||0;var prefix=cfg.prefix||'';var values=[];var i;for(i=min;i<max;i+=step){values.push(prefix+Math.round(dfactor*i)/dfactor);}
3return values;},months:function(config){var cfg=config||{};var count=cfg.count||12;var section=cfg.section;var values=[];var i,value;for(i=0;i<count;++i){value=Months[Math.ceil(i)%12];values.push(value.substring(0,section));}
4return values;},color:function(index){return COLORS[index%COLORS.length];},transparentize:function(color,opacity){var alpha=opacity===undefined?0.5:1-opacity;return Color(color).alpha(alpha).rgbString();}};window.randomScalingFactor=function(){return Math.round(Samples.utils.rand(-100,100));};Samples.utils.srand(Date.now());if(document.location.hostname.match(/^(www\.)?chartjs\.org$/)){

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4}}(this));