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Last active December 6, 2018 21:28
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Ch. 10, Fig. 3 - D3.js in Action
license: mit
<html>
<head>
<title>D3 in Action Chapter 10 - Example 1</title>
<meta charset="utf-8" />
<script src="http://d3js.org/colorbrewer.v1.min.js" type="text/JavaScript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
</head>
<style>
svg {
height: 500px;
width: 500px;
border: 1px solid gray;
}
</style>
<body>
<div id="viz">
<svg></svg>
</div>
</body>
<footer>
<script>
d3.json("tweets.json", function(error, data) {
makeAGrid(data);
})
function makeAGrid(data) {
var scale = d3.scale.linear().domain([0,5]).range([100,400]);
var grid = d3.layout.grid()
var griddedData = grid(data.tweets);
d3.select("svg").selectAll("circle").data(griddedData)
.enter()
.append("circle")
.attr("cx", function(d) {return scale(d.x)})
.attr("cy", function(d) {return scale(d.y)})
.attr("r", 20)
.style("fill", "tomato")
var doubledArray = null;
setTimeout(()=>{
var fakeTweets = []
for (x = 0;x<12;x++) {
var tweet = {id: x, content: "Fake Tweet #" + x};
fakeTweets.push(tweet);
}
var newData = doubledArray || data
doubledArray = newData.tweets.concat(fakeTweets);
var newGriddedData = grid(doubledArray);
d3.select("svg").selectAll("circle").data(newGriddedData)
.enter()
.append("circle")
.attr("cx", 0)
.attr("cy", 0)
.attr("r", 20)
.style("fill", "darkred");
d3.select("svg").selectAll("circle")
.transition()
.duration(1000)
.attr("cx", function(d) {return scale(d.x)})
.attr("cy", function(d) {return scale(d.y)})
}, 2000)
}
d3.layout.grid = function() {
var gridSize = [10,10];
var gridColumns;
var gridRows;
function processGrid(data) {
var rows = Math.ceil(Math.sqrt(data.length));
var columns = Math.ceil(Math.sqrt(data.length));
var x = 0;
for (i = 0; i < rows; i++) {
for (j = 0; j < columns; j++) {
if (data[x]) {
data[x].x = j;
data[x].y = i;
x++;
}
else {
break;
}
}
}
return data;
}
processGrid.size = function(newSize) {
if (!arguments.length) return gridSize;
gridSize = newSize;
return this;
}
return processGrid;
}
</script>
</footer>
</html>
{
"tweets": [
{"user": "Al", "content": "I really love seafood.", "timestamp": " Mon Dec 23 2013 21:30 GMT-0800 (PST)", "retweets": ["Raj","Pris","Roy"], "favorites": ["Sam"]},
{"user": "Al", "content": "I take that back, this doesn't taste so good.", "timestamp": "Mon Dec 23 2013 21:55 GMT-0800 (PST)", "retweets": ["Roy"], "favorites": []},
{"user": "Al", "content": "From now on, I'm only eating cheese sandwiches.", "timestamp": "Mon Dec 23 2013 22:22 GMT-0800 (PST)", "retweets": [], "favorites": ["Roy","Sam"]},
{"user": "Roy", "content": "Great workout!", "timestamp": " Mon Dec 23 2013 7:20 GMT-0800 (PST)", "retweets": [], "favorites": []},
{"user": "Roy", "content": "Spectacular oatmeal!", "timestamp": " Mon Dec 23 2013 7:23 GMT-0800 (PST)", "retweets": [], "favorites": []},
{"user": "Roy", "content": "Amazing traffic!", "timestamp": " Mon Dec 23 2013 7:47 GMT-0800 (PST)", "retweets": [], "favorites": []},
{"user": "Roy", "content": "Just got a ticket for texting and driving!", "timestamp": " Mon Dec 23 2013 8:05 GMT-0800 (PST)", "retweets": [], "favorites": ["Sam", "Sally", "Pris"]},
{"user": "Pris", "content": "Going to have some boiled eggs.", "timestamp": " Mon Dec 23 2013 18:23 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]},
{"user": "Pris", "content": "Maybe practice some gymnastics.", "timestamp": " Mon Dec 23 2013 19:47 GMT-0800 (PST)", "retweets": [], "favorites": ["Sally"]},
{"user": "Sam", "content": "@Roy Let's get lunch", "timestamp": " Mon Dec 23 2013 11:05 GMT-0800 (PST)", "retweets": ["Pris"], "favorites": ["Sally", "Pris"]}
]
}
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