Created
October 12, 2012 17:13
-
-
Save justinkamerman/3880315 to your computer and use it in GitHub Desktop.
D3 force direced graph script
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8"> | |
<script type="text/javascript" src="d3.js"></script> | |
<style> | |
.link { | |
stroke: #ccc; | |
stroke-width: 2 | |
} | |
.node text { | |
pointer-events: none; | |
font: 10px sans-serif; | |
} | |
.originator { | |
fill: none; | |
stroke: red; | |
stroke-width: 2 | |
} | |
.followers { | |
fill: none; | |
stroke: #ccc; | |
stroke-width: 2 | |
} | |
.tweet-text { | |
pointer-events: none; | |
font: 20px sans-serif; | |
fill: black | |
} | |
.tweet-retweetcount { | |
pointer-events: none; | |
font: 15px sans-serif; | |
fill: #ccc | |
} | |
.tweet-reach { | |
pointer-events: none; | |
font: 15px sans-serif; | |
fill: #ccc | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
function getUrlVars() { | |
var vars = {}; | |
var parts = window.location.href.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) { | |
vars[key] = value; | |
}); | |
return vars; | |
} | |
reach = null | |
tweetId = getUrlVars()["id"] | |
console.log(tweetId) | |
d3.json("data/" + tweetId + ".json", function(json){ | |
var width = 960, | |
height = 960; | |
var svg = d3.select('body') | |
.append('svg') | |
.attr('width', width) | |
.attr('height', height); | |
// draw the graph edges | |
var link = svg.selectAll("link") | |
.data(json.links) | |
.enter() | |
.append("line") | |
.attr("class","link"); | |
// draw the graph nodes | |
var node = svg.selectAll("node") | |
.data(json.nodes) | |
.enter() | |
.append("g") | |
.attr("class", "node") | |
// create the layout | |
var force = d3.layout.force() | |
.gravity(0.1) | |
.linkDistance(200) | |
.charge(-800) | |
.size([width, height]) | |
.nodes(json.nodes) | |
.links(json.links) | |
.start(); | |
// define what to do one each tick of the animation | |
force.on("tick", function() { | |
link.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; }); | |
}); | |
// bind the drag interaction to the nodes | |
node.call(force.drag); | |
// Node images | |
node.append("image") | |
.attr("xlink:href", function(d) { return d.profile_image_url }) | |
.attr("x", -20) | |
.attr("y", -20) | |
.attr("width", 40) | |
.attr("height", 40); | |
// Label nodes | |
node.append("text") | |
.attr("dx", 20) | |
.attr("dy", ".35em") | |
.text(function(d) { return d.screen_name }); | |
// Follower count circles | |
node.append("circle") | |
.attr("class", "followers") | |
.attr("r", function(d) { reach += d.followers_count; return 5*Math.log(d.followers_count+2)}) | |
// Mark originator node | |
d3.select (".node").append("circle").attr("class", "originator").attr("r", 20) | |
// Tweet details | |
svg.append("text") | |
.attr("class", "tweet-text") | |
.attr("x", 10) | |
.attr("y", 20) | |
.text(json.tweet.text) | |
svg.append("text") | |
.attr("class", "tweet-retweetcount") | |
.attr("x", 10) | |
.attr("y", 40) | |
.text("Retweet Count: " + json.tweet.retweet_count) | |
svg.append("text") | |
.attr("class", "tweet-reach") | |
.attr("x", 10) | |
.attr("y", 60) | |
.text("Reach: " + reach) | |
}); | |
</script> | |
</body> | |
</html> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment