Demo of of Echo Nest playlist generation with variety and distribution
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!DOCTYPE html> | |
<html> | |
<head> | |
<title>Playlist Distribution Demo</title> | |
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js"></script> | |
<script type="text/javascript" src="https://www.google.com/jsapi"></script> | |
<link type="text/css" href="demo_styles.css" rel="stylesheet" /> | |
</head> | |
<body> | |
<h1 id='title'> Playlist Distribution Demo</h1> | |
<div class ='info'> | |
This is a demonstration of how the | |
<a href="http://developer.echonest.com/docs/v4/playlist.html#static">Echo Nest playlist API </a> | |
gives you control over the the number and type of artists appearing in a playlist. | |
</div> | |
<br> | |
<span class='box'> Seed artist: | |
<input title="Artist" type="text" size=24 id="artist" | |
onkeydown="if (event.keyCode == 13) newArtist()" name="artist" value='weezer'/> | |
</span> | |
<span class='box'> Variety: | |
<span id='range'> min <input type="range" name="variety" id=variety value='3' min="1" max="10" /> max | |
</span> | |
</span> | |
<span class='box'> Distribution: | |
<input type="radio" name="distribution" id="wandering" value="wandering" checked /> wandering | |
<input type="radio" name="distribution" id="focused" value="focused" /> focused | |
</span> | |
<button value="go" id="go" name="go" disabled onclick="newArtist()"> Go </button> | |
<div id="info"> </div> | |
<div id="all_results"> | |
<div id='artists'> | |
<div id="histogram2"> </div> | |
</div> | |
<div id='tracks'> | |
<h2> The Playlist</h2> | |
<ol id="results"> </ol> | |
</div> | |
</div> | |
</body> | |
<script type="text/javascript"> | |
$("#all_results").hide(); | |
google.load("visualization", "1", {packages:["corechart"]}); | |
function fetchArtistPlaylist(artist, wandering, variety) { | |
var url = 'http://developer.echonest.com/api/v4/playlist/static?api_key=GETYOUROWNKEY&callback=?'; | |
$("#all_results").hide(); | |
info("Creating the playlist ..."); | |
$.getJSON(url, { 'artist': artist, 'format':'jsonp', | |
'results': 100, 'type':'artist-radio', 'variety' : variety, | |
'distribution' : wandering ? 'wandering' : 'focused' }, function(data) { | |
info(""); | |
$("#results").empty(); | |
$("#all_results").show(); | |
var artists = {}; | |
for (var i = 0; i < data.response.songs.length; i++) { | |
var song = data.response.songs[i]; | |
if (! (song.artist_name in artists) ) { | |
artists[song.artist_name] = 0; | |
} | |
artists[song.artist_name]++; | |
var li = $("<li>").html("<span class='title'>" + song.title + "<span>" | |
+ " by <span class='artist'>" + song.artist_name + "</span>"); | |
$("#results").append(li); | |
} | |
showArtistHistogram(artists); | |
}); | |
} | |
function showArtistHistogramTable(artist) { | |
$("#histogram").empty(); | |
var keys = []; | |
for (a in artists) { | |
console.log(a); | |
keys.push(a); | |
} | |
keys.sort(function(a,b) { return artists[b] - artists[a]; }); | |
var ul = $("<ul>"); | |
console.log(keys); | |
for (var i in keys) { | |
var artist = keys[i]; | |
var li = $("<li>").html(artists[artist] + " " + "<span class='artist'>" + artist + "</span>"); | |
$("#histogram").append(li); | |
} | |
} | |
function showArtistHistogram(artists) { | |
var keys = []; | |
for (a in artists) { | |
keys.push(a); | |
} | |
keys.sort(function(a,b) { return artists[b] - artists[a]; }); | |
var rows = []; | |
for (var i in keys) { | |
var name = keys[i]; | |
var count = artists[name]; | |
rows.push( [name, count] ); | |
} | |
var data = new google.visualization.DataTable(); | |
data.addColumn('string', 'Artist'); | |
data.addColumn('number', 'Count'); | |
data.addRows(rows); | |
var options = { | |
title: 'Artist Histogram', | |
height: rows.length * 32, | |
width: 500, | |
fontSize: 12, | |
vAxis: {title: 'Artist', titleTextStyle: {color: 'blue'}}, | |
titleTextStyle: {fontSize:18}, | |
chartArea: { top: 32 }, | |
legend: { position: 'none' }, | |
}; | |
var chart = new google.visualization.BarChart(document.getElementById('histogram2')); | |
chart.draw(data, options); | |
} | |
function newArtist() { | |
var artist = $("#artist").val(); | |
var wandering = $("#wandering").is(':checked'); | |
var variety = $("#variety").val() / 10.0; | |
fetchArtistPlaylist(artist, wandering, variety); | |
} | |
function info(txt) { | |
$("#info").text(txt); | |
} | |
$(document).ready(function() { | |
$("#go").removeAttr("disabled"); | |
}); | |
</script> | |
</html> |
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