modernizr-2.0.6.js
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vis.coffee
SmallMults = () ->
width = 200
height = 160
graphWidth = 180
graphHeight = 140
yPadding = 12
data = []
xScale = d3.scale.ordinal()
.rangeRoundBands([0, graphWidth], 0.1)
colorScale = d3.scale.ordinal()
.range(["#ff7f0e", "#1f77b4", "#2ca02c", "#d62728", "#8c564b", "#9467bd"])
yScale = d3.scale.linear()
.range([0, graphHeight - yPadding])
scaleFactor = 4
chart = (selection) ->
selection.each (rawData) ->
data = rawData
setScales()
createLegend()
pre = d3.select(this).select("#previews")
.selectAll(".preview").data(data)
pre.enter()
.append("div")
.attr("class", "preview")
.attr("width", width)
.attr("height", height)
svgs = pre.append("svg")
.attr("width", width)
.attr("height", height)
previews = svgs.append("g")
previews.each(drawChart)
previews.append("rect")
.attr("width", graphWidth)
.attr("height", graphHeight)
.attr("class", "mouse_preview")
.on("click", showDetail)
drawChart = (d,i) ->
base = d3.select(this)
base.append("rect")
.attr("width", graphWidth)
.attr("height", graphHeight)
.attr("class", "background")
graph = base.append("g")
graph.selectAll(".bar")
.data((d) -> d.values)
.enter().append("rect")
.attr("x", (d) -> xScale(d.name))
.attr("y", (d) -> (graphHeight - yScale(d.value) - yPadding))
.attr("width", xScale.rangeBand())
.attr("height", (d) -> yScale(d.value))
.attr("fill", (d) -> colorScale(d.name))
.on("mouseover", showAnnotation)
.on("mouseout", hideAnnotation)
graph.append("text")
.text((d) -> d.year)
.attr("class", "title")
.attr("text-anchor", "middle")
.attr("x", graphWidth / 2)
.attr("dy", "1.3em")
drawDetails = (d,i) ->
graph = d3.select(this)
graph.selectAll(".name")
.data(d.values).enter()
.append("text")
.attr("class", "name")
.text((d) -> d.name)
.attr("text-anchor", "middle")
.attr("y", graphHeight - yPadding)
.attr("dy", "1.3em")
.attr("x", (d) -> xScale(d.name) + xScale.rangeBand() / 2)
.attr("font-size", 8)
graph.selectAll(".amount")
.data(d.values).enter()
.append("text")
.attr("class", "amount")
.text((d) -> if d.value == 0 then "No Data" else shortenNumber(d.value))
.attr("text-anchor", "middle")
.attr("y", (d) -> (graphHeight - yScale(d.value) - yPadding))
.attr("dy", (d) -> if yScale(d.value) < 10 then "-0.3em" else "1.1em")
.attr("x", (d) -> xScale(d.name) + xScale.rangeBand() / 2)
.attr("font-size", 5)
showDetail = (d,i) ->
toggleHidden(true)
detailView = d3.select("#detail_panel")
detailView.selectAll('svg').remove()
detailG = detailView.selectAll('svg').data([d,data[data.length-1]]).enter()
main = detailG.append("svg")
.attr("width", 800 )
.attr("height", 800 )
.append("g")
.attr("class", "main")
.attr("id",(d,i) -> "detail"+i)
.style('opacity',0)
main.each(drawChart)
main.each(drawDetails)
main.on("click", () -> hideDetail(d,i))
d3.select("#detail").on("click", () -> hideDetail(d,i))
pos = getPosition(i)
scrollTop = $(window).scrollTop()
d3.select("#detail0")
.attr('transform', "translate(#{pos.left},#{pos.top - scrollTop})")
.style('opacity',100)
main.transition()
.delay(500)
.duration(500)
.attr('transform', "translate(#{40},#{0}) scale(#{scaleFactor/2.2})")
detailView.selectAll('svg').transition()
.delay(1000)
.attr("width", width * scaleFactor / 2 )
.attr("height", height * scaleFactor / 2 )
main.transition()
.delay(1200)
.style('opacity',100)
hideDetail = (d,i) ->
pos = getPosition(i)
scrollTop = $(window).scrollTop()
d3.selectAll('#detail1').style("opacity",0)
d3.select("#detail_panel").selectAll('svg')
.attr("width", 800 )
.attr("height", 800 )
d3.selectAll('#detail0').transition()
.duration(500)
.attr('transform', "translate(#{pos.left},#{pos.top - scrollTop})")
.each 'end', () ->
toggleHidden(false)
toggleHidden = (show) ->
d3.select("#previews").classed("hidden", show).classed("visible", !show)
d3.select("#detail").classed("hidden", !show).classed("visible", show)
showAnnotation = (d,i) ->
d3.selectAll(".main").selectAll(".subtitle").remove()
makesubtitle = (a) ->
graph = d3.select("#detail" + a)
g = data.filter((e) -> e.year==Number(d3.select("#detail" + a + " .title").text()))[0].values.filter((f) -> f.code==d.code)[0]
graph.selectAll(".subtitle").data([g]).enter()
.append("text")
.text("#{formatNumber(g.percent_world * 100)}% of Worldwide Emissions")
.attr("class", "subtitle")
.attr("fill", (d) -> colorScale(d.name))
.attr("text-anchor", "middle")
.attr("dy", "3.8em")
.attr("x", (d) -> graphWidth / 2)
.attr("font-size", 8)
makesubtitle a for a in [0,1]
hideAnnotation = (d) ->
graph = d3.selectAll("#detail_panel .main")
graph.selectAll(".subtitle").remove()
setScales = () ->
yMax = d3.max(data, (d) -> d3.max(d.values, (e) -> e.value))
yScale.domain([0,yMax + 500000])
names = data[0].values.map (d) -> d.name
xScale.domain(names)
colorScale.domain(names)
getPosition = (i) ->
el = $('.preview')[i]
pos = $(el).position()
pos
createLegend = () ->
legend = d3.select("#legend")
.append("svg")
.attr("width", 100)
.attr("height", 300)
keys = legend.selectAll("g")
.data(data[0].values)
.enter().append("g")
.attr("transform", (d,i) -> "translate(#{0},#{40 * (i + 1)})")
keys.append("rect")
.attr("width", 30)
.attr("height", 30)
.attr("fill", (d) -> colorScale(d.name))
keys.append("text")
.text((d) -> d.name)
.attr("text-anchor", "left")
.attr("dx", "2.2em")
.attr("dy", "1.2em")
return chart
addCommas = (number) ->
number += ''
values = number.split('.')
num = values[0]
dec = if values.length > 1 then '.' + values[1] else ''
rgx = /(\d+)(\d{3})/
while rgx.test(num)
num = num.replace(rgx, '$1' + ',' + '$2')
num + dec
roundNumber = (number, decimals) ->
Math.round(number * Math.pow(10, decimals)) / Math.pow(10, decimals)
formatNumber = (number) ->
addCommas(roundNumber(number,0))
shortenNumber = (number) ->
if number > 1000000
addCommas(roundNumber(number / 1000000,1)) + "M"
else if number > 1000
addCommas(roundNumber(number / 1000,0)) + "K"
else
addCommas(roundNumber(number,0))
plotData = (selector, data, plot) ->
d3.select(selector)
.datum(data)
.call(plot)
$ ->
plot = SmallMults()
display = (data) ->
plotData("#vis", data, plot)
d3.json("co2_kt_data.json", display)