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The Counted: simple example
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
svg { width:100%; height: 100% } | |
circle { | |
opacity: 0.5; | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
// Feel free to change or delete any of the code you see! | |
var svg = d3.select("body").append("svg") | |
var url = "https://numeracy.co/projects/382368K6Bkx/data?format=csv"; | |
d3.csv(url) | |
.row(function(d) { | |
return { | |
name: d.name, | |
age: parseFloat(d.age), | |
date: new Date(d.month + "/" + d.day + "/" + d.year) | |
} | |
}) | |
.get(function(err, data) { | |
console.log("data:", data) | |
var counted = []; | |
data.forEach(function(d) { | |
if(d.age) { | |
counted.push(d) | |
} | |
}) | |
console.log("counted", counted) | |
var maxAge = d3.max(counted, function(d) { | |
return d.age | |
}) | |
console.log("max age:", maxAge) | |
var avgAge = d3.mean(counted, function(d) { | |
return d.age | |
}) | |
console.log("mean age", avgAge); | |
var yscale = d3.scale.linear() | |
.domain([0, maxAge]) | |
.range([400, 10]) | |
var dateExtent = d3.extent(counted, function(d) { | |
return d.date | |
}) | |
var xscale = d3.time.scale() | |
.domain(dateExtent) | |
.range([10, 900]) | |
var circles = svg.selectAll("circle") | |
.data(counted) | |
circles.enter() | |
.append("circle") | |
.attr({ | |
cx: function(d,i) { | |
return xscale(d.date) | |
} , | |
cy: function(d,i) { | |
return yscale(d.age) | |
}, | |
r: 5 | |
}) | |
.on("click", function(d,i) { | |
console.log("clicked", d.age, yscale(d.age)) | |
}) | |
}) | |
</script> | |
</body> |
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