Created
September 5, 2013 19:40
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Two sided horizontal bar chart
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<!DOCTYPE html> | |
<html> | |
<head> | |
<title>Bar Chart</title> | |
<script type="text/javascript" src="javascript/d3.v2.min.js"></script> | |
<style type="text/css"> | |
.chart { | |
background: #00ccff; | |
margin: 10px; | |
padding-top: 10px; | |
} | |
.chart .right { | |
stroke: white; | |
fill: indianred; | |
} | |
.chart .left { | |
stroke: white; | |
fill: steelblue; | |
} | |
.chart rect:hover { | |
fill: #64707d; | |
} | |
.chart text { | |
fill: white; | |
} | |
.chart text.name { | |
fill: black; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Two sided horiztontal bar chart</h1> | |
<script type="text/javascript"> | |
var randomNumbers = function() { | |
var numbers = []; | |
for (var i = 0; i < 20; i++) { | |
numbers.push(parseInt(Math.random() * 19) + 1); | |
} | |
return numbers; | |
}; | |
var randomNames = function() { | |
var names = []; | |
for (var i = 0; i < 20; i++) { | |
names.push(String.fromCharCode(65 + Math.random() * 25) + String.fromCharCode(65 + Math.random() * 25) + String.fromCharCode(65 + Math.random() * 25)); | |
} | |
return names; | |
}; | |
var names = randomNames(); | |
var leftData = randomNumbers(); | |
var rightData = randomNumbers(); | |
for (var i= 0; i< names.length; i++) { | |
console.log(names[i] + " from: " + leftData[i] + " to: " + rightData[i]); | |
} | |
var labelArea = 160; | |
var chart, | |
width = 400, | |
bar_height = 20, | |
height = bar_height * (names.length); | |
var rightOffset = width + labelArea; | |
var chart = d3.select("body") | |
.append('svg') | |
.attr('class', 'chart') | |
.attr('width', labelArea + width + width) | |
.attr('height', height); | |
var xFrom = d3.scale.linear() | |
.domain([0, d3.max(leftData)]) | |
.range([0, width]); | |
var y = d3.scale.ordinal() | |
.domain(names) | |
.rangeBands([10, height]); | |
var yPosByIndex = function(d, index){ return y(index); } | |
chart.selectAll("rect.left") | |
.data(leftData) | |
.enter().append("rect") | |
.attr("x", function(pos) { return width - xFrom(pos); }) | |
.attr("y", yPosByIndex) | |
.attr("class", "left") | |
.attr("width", xFrom) | |
.attr("height", y.rangeBand()); | |
chart.selectAll("text.leftscore") | |
.data(leftData) | |
.enter().append("text") | |
.attr("x", function(d) { return width - xFrom(d); }) | |
.attr("y", function(d, z){ return y(z) + y.rangeBand()/2; } ) | |
.attr("dx", "20") | |
.attr("dy", ".36em") | |
.attr("text-anchor", "end") | |
.attr('class', 'leftscore') | |
.text(String); | |
chart.selectAll("text.name") | |
.data(names) | |
.enter().append("text") | |
.attr("x", (labelArea / 2) + width) | |
.attr("y", function(d){ return y(d) + y.rangeBand()/2; } ) | |
.attr("dy", ".20em") | |
.attr("text-anchor", "middle") | |
.attr('class', 'name') | |
.text(String); | |
var xTo = d3.scale.linear() | |
.domain([0, d3.max(rightData)]) | |
.range([0, width]); | |
chart.selectAll("rect.right") | |
.data(rightData) | |
.enter().append("rect") | |
.attr("x", rightOffset) | |
.attr("y", yPosByIndex) | |
.attr("class", "right") | |
.attr("width", xTo) | |
.attr("height", y.rangeBand()); | |
chart.selectAll("text.score") | |
.data(rightData) | |
.enter().append("text") | |
.attr("x", function(d) { return xTo(d) + rightOffset; }) | |
.attr("y", function(d,z){ return y(z) + y.rangeBand()/2; } ) | |
.attr("dx", -5) | |
.attr("dy", ".36em") | |
.attr("text-anchor", "end") | |
.attr('class', 'score') | |
.text(String); | |
</script> | |
</body> | |
</html> |
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