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A simple line chart example using D3.js
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<html> | |
<meta http-equiv="Content-type" content="text/html;charset=UTF-8"> | |
<head> | |
<title>D3.js Dashboard Introduction</title> | |
<script src="http://d3js.org/d3.v2.js"></script> | |
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> | |
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.21/jquery-ui.min.js"></script> | |
<script> | |
function getMaxObjectValue(this_array, element) { | |
var values = []; | |
for (var i = 0; i < this_array.length; i++) { | |
values.push(Math.ceil(parseFloat(this_array[i][""+element]))); | |
} | |
values.sort(function(a,b){return a-b}); | |
return values[values.length-1]; | |
} | |
function getMinObjectValue(this_array, element) { | |
var values = []; | |
for (var i = 0; i < this_array.length; i++) { | |
values.push(Math.floor(parseFloat(this_array[i][""+element]))); | |
} | |
values.sort(function(a,b){return a-b}); | |
return values[0]; | |
} | |
$(document).ready(function() { | |
var data = []; | |
// this is our data array | |
var startingDate = new Date(2012, 8, 18); | |
// this is a date object. each of our data objects is attached to a date | |
for (var i = 0; i < 10; i++) { | |
// loop 10 times to create 10 data objects | |
var tmpObj = {}; | |
// this is a temporary data object | |
tmpObj.date = new Date(startingDate.getFullYear(), startingDate.getMonth(), startingDate.getDate()+i); | |
// the data for this data object. Increment it from the starting date. | |
tmpObj.DAU = Math.round(Math.random() * 300); | |
// random value. Round it to a whole number. | |
data.push(tmpObj); | |
// push the object into our data array | |
} | |
var width = 300, height = 300; | |
var margin = {top: 30, right: 10, bottom: 40, left: 60}, width = width - margin.left - margin.right, height = height - margin.top - margin.bottom; | |
// these are graph size settings | |
var minDate = (data[0].date), | |
maxDate = data[data.length-1].date; | |
minObjectValue = getMinObjectValue(data, 'DAU'); | |
maxObjectValue = getMaxObjectValue(data, 'DAU'); | |
//create the graph object | |
var vis= d3.select("#metrics").append("svg") | |
.data(data) | |
.attr("class", "metrics-container") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
var y = d3.scale.linear().domain([ minObjectValue - (.1 * minObjectValue) , maxObjectValue + (.1 * maxObjectValue) ]).range([height, 0]), | |
x = d3.time.scale().domain([minDate, maxDate]).range([0, width]); | |
var yAxis = d3.svg.axis() | |
.scale(y) | |
.orient("left") | |
.ticks(5); | |
var xAxis = d3.svg.axis() | |
.scale(x) | |
.orient("bottom") | |
.ticks(5); | |
vis.append("g") | |
.attr("class", "axis") | |
.call(yAxis); | |
vis.append("g") | |
.attr("class", "axis") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
//add the axes labels | |
vis.append("text") | |
.attr("class", "axis-label") | |
.attr("text-anchor", "end") | |
.attr("x", 20) | |
.attr("y", height + 34) | |
.text('Date'); | |
vis.append("text") | |
.attr("class", "axis-label") | |
.attr("text-anchor", "end") | |
.attr("y", 6) | |
.attr("dy", "-3.4em") | |
.attr("transform", "rotate(-90)") | |
.text('Daily Active Users'); | |
var line = d3.svg.line() | |
.x(function(d) { return x(d["date"]); }) | |
.y(function(d) { return y(d["DAU"]); }) | |
vis.append("svg:path") | |
.attr("d", line(data)) | |
.style("stroke", function() { | |
return "#000000"; | |
}) | |
.style("fill", "none") | |
.style("stroke-width", "2.5"); | |
var dataCirclesGroup = vis.append('svg:g'); | |
var circles = dataCirclesGroup.selectAll('.data-point') | |
.data(data); | |
circles | |
.enter() | |
.append('svg:circle') | |
.attr('class', 'dot') | |
.attr('fill', function() { return "red"; }) | |
.attr('cx', function(d) { return x(d["date"]); }) | |
.attr('cy', function(d) { return y(d["DAU"]); }) | |
.attr('r', function() { return 3; }) | |
.on("mouseover", function(d) { | |
d3.select(this) | |
.attr("r", 8) | |
.attr("class", "dot-selected") | |
.transition() | |
.duration(750); | |
}) | |
.on("mouseout", function(d) { | |
d3.select(this) | |
.attr("r", 3) | |
.attr("class", "dot") | |
.transition() | |
.duration(750); | |
}); | |
}); | |
</script> | |
<style> | |
.axis path, .axis line { | |
fill: none; | |
stroke: #000; | |
shape-rendering: crispEdges; | |
} | |
.line { | |
fill: none; | |
stroke-width: 1.5px; | |
} | |
body { | |
background: #FFFFFF; | |
background-repeat:repeat-x; | |
text-align: center; | |
font: 10px sans-serif; | |
} | |
.dot { | |
stroke-width: 1.5px; | |
} | |
.dot-selected { | |
fill: #B0C4DE; | |
stroke: #B0C4DE; | |
stroke-width: 1.5px; | |
} | |
.metrics-container { | |
width: auto; | |
height: auto; | |
padding: 10px 10px 10px 10px; | |
border-style: solid; | |
border-width: 1px; | |
float: left; | |
margin-left: 20px; | |
margin-top: 20px; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>A D3.js Dashboard</h1> | |
<div id="metrics"> | |
</div> | |
</body> | |
</html> |
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