isao/LICENSE.txt

## README.md

      
    Raw
  

              README.md
            
          
    140byt.es whoa, sparklines

A tweet-sized, fork-to-play, community-curated collection of JavaScript.
How to play


Click the  button above to fork this gist.
Modify all the files to according to the rules below.
Save your entry and tweet it up!

Keep in mind that thanks to the awesome sensibilities of the GitHub team, gists are just repos. So feel free to clone yours and work locally for a more comfortable environment, and to allow commit messages.
Rules

All entries must exist in an index.js file, whose contents are

an assignable, valid Javascript expression that
contains no more than 140 bytes, and
does not leak to the global scope.

All entries must also be licensed under the WTFPL or equally permissive license.
For more information

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.
To learn about byte-saving hacks for your own code, or to contribute what you've learned, head to the wiki.
140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

  
## annotated.js
function(
    canvas,                                             // a canvas element
    data                                                // an array of values from 0 to 1
) {
    var
        context = canvas.getContext("2d"),              // get the 2d canvas context
        i,                                              // array length
        count = i = data.length,                        // set the iterator and count to the length of the array
        h = canvas.height = canvas.offsetHeight,        // ensure we have the height adjusted for the size of the canvas
        w = canvas.width;                               // get the canvas width, COMPROMISE: w = canvas.width = canvas.offsetWidth;

    for (; i--;                                         // iterate throught the array in reverse
       context.lineTo(
               w * i / (count - 1),                     // set line points
               h - (h * data[i])
       ));

    context.stroke();                                   // draw the line
}

## index.js
function(a,b){var c=a.getContext("2d"),d,e=d=b.length,f=a.height=a.offsetHeight,g=a.width;for(;d--;c.lineTo(g*d/(e-1),f-f*b[d]));c.stroke()}

## 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.

## package.json
{
  "name": "sparkLines",

  "description": "Simple spark line generator using canvas.",

  "keywords": [
    "sparkline",
    "canvas"
  ]
}

## test.html
<!DOCTYPE html>
<html>
<head>
    <style>
        body {
            font-size: 32px;
        }

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

    </style>
</head>
<body>

spark lines
<canvas id="canvas"></canvas>
in 140 bytes

</body>

<script type="text/javascript">

    var spark = function(a,b){var c=a.getContext("2d"),d,e=d=b.length,f=a.height=a.offsetHeight,g=a.width;for(;d--;c.lineTo(g*d/(e-1),f-f*b[d]));c.stroke()}

    var canvas = document.getElementById("canvas");
    var data = [0, .8, 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, 0.1, 0.6, 0.2, 0.4, 0.1, 0.3, 0.5, 0.6, 0.8, 0.7, 0];
    spark(canvas, data);

</script>

</html>
	function(
	canvas, // a canvas element
	data // an array of values from 0 to 1
	) {
	var
	context = canvas.getContext("2d"), // get the 2d canvas context
	i, // array length
	count = i = data.length, // set the iterator and count to the length of the array
	h = canvas.height = canvas.offsetHeight, // ensure we have the height adjusted for the size of the canvas
	w = canvas.width; // get the canvas width, COMPROMISE: w = canvas.width = canvas.offsetWidth;

	for (; i--; // iterate throught the array in reverse
	context.lineTo(
	w * i / (count - 1), // set line points
	h - (h * data[i])
	));

	context.stroke(); // draw the line
	}
	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": "sparkLines",

	"description": "Simple spark line generator using canvas.",

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

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

	</style>
	</head>
	<body>

	spark lines
	<canvas id="canvas"></canvas>
	in 140 bytes

	</body>

	<script type="text/javascript">

	var spark = function(a,b){var c=a.getContext("2d"),d,e=d=b.length,f=a.height=a.offsetHeight,g=a.width;for(;d--;c.lineTo(gd/(e-1),f-fb[d]));c.stroke()}

	var canvas = document.getElementById("canvas");
	var data = [0, .8, 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, 0.1, 0.6, 0.2, 0.4, 0.1, 0.3, 0.5, 0.6, 0.8, 0.7, 0];
	spark(canvas, data);

	</script>

	</html>