http://blogs.ft.com/ftdata/2013/10/10/breaking-down-the-pressures-on-energy-bills/
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Breaking down the pressures on energy bills
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Item | 2013 | 2014 | Change % | |
---|---|---|---|---|
Government schemes | 127 | 144 | 13 | |
Network Costs | 319 | 350 | 10 | |
VAT | 64 | 69 | 21 | |
Wholesale costs | 637 | 662 | 8 | |
Other supplier costs and margins | 127 | 154 | 4 |
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<html> | |
<head> | |
<meta http-equiv="content-type" content="application/xhtml+xml; charset=utf-8" /> | |
<title>Energy Bill Breakdown</title> | |
<style type="text/css"> | |
.baseline{ | |
stroke:#333; | |
stroke-width: 1; | |
shape-rendering: crispEdges; | |
} | |
.changeline{ | |
stroke:#333; | |
stroke-width: 0.5; | |
stroke-dasharray:1,3; | |
} | |
text{ | |
font-family: sans-serif; | |
fill: #666; | |
} | |
text.value{ | |
font-size: 0.65rem; | |
fill:#777; | |
} | |
rect{ | |
fill:#aaa; | |
stroke:#999; | |
stroke-width:1; | |
shape-rendering: crispEdges; | |
} | |
</style> | |
</head> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<body> | |
</body> | |
<script> | |
d3.csv('BillBreakdown.csv', function(data){ | |
console.log(data); | |
var svg = d3.select('body').append('svg').attr('width',600).attr('height',600).append('g').attr('id','chart'); | |
svg.attr('transform', 'translate(300, 0)') | |
var rowSpacing = 10; | |
var yScale = d3.scale.linear().range([0,400]).domain([0,2000]); | |
var yPos = 0; | |
var enter = svg.selectAll('g.cost-item') | |
.data(data) | |
.enter(); | |
var blockWidth = 40; | |
var centralColumnWidth = 50; | |
var groups = enter.append('g') | |
.attr('class',function(d){ return 'cost-item ' + 'group-'+toID(d.Item); }) | |
.attr('transform', function(d){ | |
yPos += (yScale(Math.max(d[2013], d[2014])) + rowSpacing) | |
return 'translate(0,' + yPos + ')'; | |
}) | |
groups.append('rect') | |
.attr('class', function(d){ | |
return 'rect-'+toID(d.Item); | |
}) | |
.attr('height', function(d){ | |
return yScale(d[2013]); | |
}) | |
.attr('y', function(d){ | |
return -yScale(d[2013]); | |
}) | |
.attr('width', blockWidth); | |
groups.append('rect') | |
.attr('class', function(d){ | |
return 'rect-'+toID(d.Item); | |
}) | |
.attr('height', function(d){ | |
return yScale(d[2014]); | |
}) | |
.attr('y', function(d){ | |
return -yScale(d[2014]); | |
}) | |
.attr('x', centralColumnWidth + blockWidth) | |
.attr('width', blockWidth); | |
groups.append('line').attr('class', 'baseline') | |
.attr('x1', 0) | |
.attr('x2', blockWidth*2 + centralColumnWidth) | |
.attr('y1', 0) | |
.attr('y2', 0); | |
groups.append('line').attr('class', 'changeline') | |
.attr('x1', blockWidth) | |
.attr('x2', blockWidth + centralColumnWidth) | |
.attr('y1', function(d){ | |
return -yScale(d[2013]); | |
}) | |
.attr('y2', function(d){ | |
return -yScale(d[2014]); | |
}); | |
groups.append('text') | |
.text(function(d){ | |
return d.Item + ' ( +'+d['Change %']+'%)'; | |
}) | |
.attr('x', -10) | |
.attr('y', -3) | |
.attr('text-anchor','end'); | |
groups.append('text') | |
.text(function(d){ | |
return '£' + d[2013]; | |
}) | |
.attr('x', blockWidth + 3) | |
.attr('y', -3) | |
.attr('class','value'); | |
groups.append('text') | |
.text(function(d){ | |
return '£' + d[2014]; | |
}) | |
.attr('y', -3) | |
.attr('x', blockWidth*2 + centralColumnWidth + 3) | |
.attr('class','value'); | |
}); | |
function toID(s){ | |
return s.split(' ').join('-'); | |
} | |
</script> | |
</html> |
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