tomkp · October 18, 2011 09:43
diff --git a/annotated.js b/annotated.js
 function(
    canvas,                                             // canvas canvas element
    data                                                // an array of values from 0 to 1
 ) {
    with (canvas)                                       // add the canvas to the head of the scope chain
        for (
            var
                context = getContext("2d"),             // get the 2d context
                i,                                      // iterator
                count = i = data.length,                // set the iterator and count to length of the data array
                h = height = offsetHeight,              // ensure we have the height adjusted for the size of the canvas
                w = width,                              // get the canvas width, COMPROMISE: w = canvas.width = canvas.offsetWidth;
                barWidth = w / ~-count                  // calculate the width of the bar chart
                ;
                i--                                     // loop thru the data in reverse, until i === 0
                ;
                context.fillRect(                       // fill a rectangle...
                    i * barWidth,                       // x position
                    h,                                  // y position
                    barWidth - 1,                       // width of bar (subtract 1 to separate bars)
                    h * -data[i]                        // height of bar
                )
        );
 }
diff --git a/index.js b/index.js
 function(a,b){with(a)for(var c=getContext("2d"),d,e=d=b.length,f=height=offsetHeight,g=width,h=g/~-e;d--;c.fillRect(d*h,f,h-1,f*-b[d]));}
diff --git a/LICENSE.txt b/LICENSE.txt
            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.
diff --git a/package.json b/package.json
 {
  "name": "sparkBarChart",

  "description": "Bar chart version of a sparkline",

  "keywords": [
    "sparkline",
    "barchart",
    "canvas"
  ]
 }
diff --git a/test.html b/test.html
 <!DOCTYPE html>
 <html>
 <head>
    <style>
        body {
            font-size: 32px;
        }

        #canvas {
            width: 140px;
            height: 1em;
            background: #fafafa;
        }

    </style>

 </head>
 <body>

 bar chart <canvas id="canvas"></canvas> in less than 140 bytes

 </body>

 <script type="text/javascript">

    var barchart = function(a,b){with(a)for(var c=getContext("2d"),d,e=d=b.length,f=height=offsetHeight,g=width,h=g/~-e;d--;c.fillRect(d*h,f,h-1,f*-b[d]));}

    var canvas = document.getElementById("canvas");
    var data = [.8, 0.6, 0.3, .5, .25, .75, 0.1, 1, 1, 1, 1, 1, 0.4, .9, .2,  .8, .3, .7, .4, .6, .5, 0.7, 0.4, 0.2, 0.5, 0.2, 0.3, 0.4, 0.4, 0, 0.6, 0.2, 0.4, 0.1, 0.3, 0.5, 0.6, 0.8, 0.7];
    barchart(canvas, data);

 </script>

 </html>
	function(
	canvas, // canvas canvas element
	data // an array of values from 0 to 1
	) {
	with (canvas) // add the canvas to the head of the scope chain
	for (
	var
	context = getContext("2d"), // get the 2d context
	i, // iterator
	count = i = data.length, // set the iterator and count to length of the data array
	h = height = offsetHeight, // ensure we have the height adjusted for the size of the canvas
	w = width, // get the canvas width, COMPROMISE: w = canvas.width = canvas.offsetWidth;
	barWidth = w / ~-count // calculate the width of the bar chart
	;
	i-- // loop thru the data in reverse, until i === 0
	;
	context.fillRect( // fill a rectangle...
	i * barWidth, // x position
	h, // y position
	barWidth - 1, // width of bar (subtract 1 to separate bars)
	h * -data[i] // height of bar
	)
	);
	}
	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

	0. You just DO WHAT THE FUCK YOU WANT TO.
	{
	"name": "sparkBarChart",

	"description": "Bar chart version of a sparkline",

	"keywords": [
	"sparkline",
	"barchart",
	"canvas"
	]
	}
	<!DOCTYPE html>
	<html>
	<head>
	<style>
	body {
	font-size: 32px;
	}

	#canvas {
	width: 140px;
	height: 1em;
	background: #fafafa;
	}

	</style>

	</head>
	<body>

	bar chart <canvas id="canvas"></canvas> in less than 140 bytes

	</body>

	<script type="text/javascript">

	var barchart = function(a,b){with(a)for(var c=getContext("2d"),d,e=d=b.length,f=height=offsetHeight,g=width,h=g/~-e;d--;c.fillRect(dh,f,h-1,f-b[d]));}

	var canvas = document.getElementById("canvas");
	var data = [.8, 0.6, 0.3, .5, .25, .75, 0.1, 1, 1, 1, 1, 1, 0.4, .9, .2, .8, .3, .7, .4, .6, .5, 0.7, 0.4, 0.2, 0.5, 0.2, 0.3, 0.4, 0.4, 0, 0.6, 0.2, 0.4, 0.1, 0.3, 0.5, 0.6, 0.8, 0.7];
	barchart(canvas, data);

	</script>

	</html>