luluwuluying · March 21, 2016 00:00
diff --git a/AlcoholConsumption.csv b/AlcoholConsumption.csv
diff --git a/index.html b/index.html
 <!DOCTYPE html>
 <!-- mod of Mike Bostock's block http://bl.ocks.org/mbostock/3020685 -->
 <meta charset="utf-8">
 <link href='https://fonts.googleapis.com/css?family=Montserrat' rel='stylesheet' type='text/css'>
 <style>

 body {
  font: 12px font-family: 'Montserrat', sans-serif;;
  padding: 50px;
 }

 .axis path,
 .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
 }

 button {
  background-color: #4CAF50; /* Green */
    border: none;
    color: white;
    padding: 8px 15px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    border-radius: 4px;
    
 }
 .selected {
  background: #ccc;
 }

 .layer {
  fill: white;
 }

 </style>
 <body>

  <h2>Alcohol consumptionTotal, Litres/capita (aged 15 and over), 1995 – 2012</h2>

  <p> Alcohol use is associated with numerous harmful health and social consequences, including an increased risk of a range of cancers, stroke and liver cirrhosis. Alcohol also contributes to death and disability through accidents and injuries, assault, violence, homicide and suicide.<a href="https://data.oecd.org/healthrisk/alcohol-consumption.htm">OECD</a></p>

  <button id="stream">Stream It!</button><button id="stacked" class="selected">Stack It!</button>

  <div id="chart"></div>

  <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
  <script>

 var originaldata;

 var formatDate = d3.time.format("%Y");
 var years = ["1995", "2013"];

 var fullheight = 500, fullwidth = 960;
 var margin = {top: 20, right: 30, bottom: 30, left: 60},
    width = fullwidth - margin.left - margin.right,
    height = fullheight - margin.top - margin.bottom;

 var xScale = d3.time.scale()
    .range([ 0, width ])
    .domain(
        d3.extent(years, function(d) {
        return formatDate.parse(d);
        }));
      
 var yScale = d3.scale.linear()
    .range([height, 0]);

 var colorScale = d3.scale.category20b();

 var xAxis = d3.svg.axis()
    .scale(xScale)
    .orient("bottom")
    .ticks(10)
    .tickFormat(function(d) {
        return formatDate(d);
    })
    .innerTickSize([0])
    .outerTickSize([0]);

 var yAxis = d3.svg.axis()
    .scale(yScale)
    .orient("left");


 var stack = d3.layout.stack()
    .offset("zero") // try "silhouette" next, that's a streamgraph!
    //.order("inside-out")  // try this and see what you think
    .values(function(d) { return d.values; })
    .x(function(d) { return formatDate.parse(d.Year);})
    .y(function(d) { return +d.Amount; });

  // exactly the same except for offset:

 var stream = d3.layout.stack()
    .offset("silhouette") // try "silhouette" next, that's a streamgraph!
    //.order("inside-out")  // try this and see what you think
    .values(function(d) { return d.values; })
    .x(function(d) { return formatDate.parse(d.Year);})
    .y(function(d) { return +d.Amount; });

 // what's another way we can DRY this out? how about just updating the "offset" when we do the redraw below...

 var area = d3.svg.area()
    .interpolate("cardinal")
    .x(function(d) { return xScale(formatDate.parse(d.Year)); })
    .y0(function(d) { return yScale(d.y0); })
    .y1(function(d) { return yScale(d.y0 + d.y); });

 var svg = d3.select("#chart").append("svg")
    .attr("width", fullwidth)
    .attr("height", fullheight)
    .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

 d3.csv("AlcoholConsumption.csv", setup);


 function setup(error, data) {

  if (error) { console.log(error) };

  originaldata = data; // assign to a global so i can use it in other function

  var dataset =  d3.nest()
    .key(function(d) {
      return d.Country;
    })
    .sortKeys(d3.descending)  // alphabetic order from top layer
    .sortValues(function (a, b) { return formatDate.parse(a.Year) - formatDate.parse(b.Year)})
    .entries(data);

  console.log(dataset);

  // set up the UI function:

  d3.selectAll("button").on("click", function() {
    var method = d3.select(this).attr("id"); // this is stream or stacked
    d3.selectAll("button").classed("selected", false);
    d3.select(this).classed("selected", true);
    redraw(dataset, method);
  });

  // default first view: create the axes, so you transition them in the redraw.

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis);

  redraw(dataset, "stacked");  // method is either stacked or stream

 }

 function redraw(dataset, method) {

  var layers;

  if (method == "stacked") {
    layers = stack(dataset); // this operation also modifies the dataset
  } else {
    layers = stream(dataset); // this operation also modifies the dataset
  }

  console.log("layers", layers);  // it adds a y and y0 to the data values.

  // reset these AFTER doing the layer stacking.

  xScale.domain(d3.extent(originaldata, function(d) { return formatDate.parse(d.Year); }));
  yScale.domain([0, d3.max(originaldata, function(d) { return d.y0 + d.y; })]);


  var layers = svg.selectAll(".layer")
      .data(layers, function(d) {return d.key;});

  layers.enter().append("path")
      .attr("class", "layer")
      .append("title")
      .text(function(d) {
        return d.key; // country is the key
      });

  layers.transition().duration(1000)
    .attr("d", function(d) { return area(d.values); })
    .style("fill", function(d, i) { return colorScale(i); });

  layers.exit().remove();

  // transition your axes.
  d3.select(".x.axis").transition().call(xAxis);
  d3.select(".y.axis").transition().call(yAxis); // there is no visible change actually

 }


 </script>
	<!DOCTYPE html>
	<!-- mod of Mike Bostock's block http://bl.ocks.org/mbostock/3020685 -->
	<meta charset="utf-8">
	<link href='https://fonts.googleapis.com/css?family=Montserrat' rel='stylesheet' type='text/css'>
	<style>

	body {
	font: 12px font-family: 'Montserrat', sans-serif;;
	padding: 50px;
	}

	.axis path,
	.axis line {
	fill: none;
	stroke: #000;
	shape-rendering: crispEdges;
	}

	button {
	background-color: #4CAF50; /* Green */
	border: none;
	color: white;
	padding: 8px 15px;
	text-align: center;
	text-decoration: none;
	display: inline-block;
	font-size: 16px;
	border-radius: 4px;

	}
	.selected {
	background: #ccc;
	}

	.layer {
	fill: white;
	}

	</style>
	<body>

	<h2>Alcohol consumptionTotal, Litres/capita (aged 15 and over), 1995 – 2012</h2>

	<p> Alcohol use is associated with numerous harmful health and social consequences, including an increased risk of a range of cancers, stroke and liver cirrhosis. Alcohol also contributes to death and disability through accidents and injuries, assault, violence, homicide and suicide.<a href="https://data.oecd.org/healthrisk/alcohol-consumption.htm">OECD</a></p>

	<button id="stream">Stream It!</button><button id="stacked" class="selected">Stack It!</button>

	<div id="chart"></div>

	<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
	<script>

	var originaldata;

	var formatDate = d3.time.format("%Y");
	var years = ["1995", "2013"];

	var fullheight = 500, fullwidth = 960;
	var margin = {top: 20, right: 30, bottom: 30, left: 60},
	width = fullwidth - margin.left - margin.right,
	height = fullheight - margin.top - margin.bottom;

	var xScale = d3.time.scale()
	.range([ 0, width ])
	.domain(
	d3.extent(years, function(d) {
	return formatDate.parse(d);
	}));

	var yScale = d3.scale.linear()
	.range([height, 0]);

	var colorScale = d3.scale.category20b();

	var xAxis = d3.svg.axis()
	.scale(xScale)
	.orient("bottom")
	.ticks(10)
	.tickFormat(function(d) {
	return formatDate(d);
	})
	.innerTickSize([0])
	.outerTickSize([0]);

	var yAxis = d3.svg.axis()
	.scale(yScale)
	.orient("left");


	var stack = d3.layout.stack()
	.offset("zero") // try "silhouette" next, that's a streamgraph!
	//.order("inside-out") // try this and see what you think
	.values(function(d) { return d.values; })
	.x(function(d) { return formatDate.parse(d.Year);})
	.y(function(d) { return +d.Amount; });

	// exactly the same except for offset:

	var stream = d3.layout.stack()
	.offset("silhouette") // try "silhouette" next, that's a streamgraph!
	//.order("inside-out") // try this and see what you think
	.values(function(d) { return d.values; })
	.x(function(d) { return formatDate.parse(d.Year);})
	.y(function(d) { return +d.Amount; });

	// what's another way we can DRY this out? how about just updating the "offset" when we do the redraw below...

	var area = d3.svg.area()
	.interpolate("cardinal")
	.x(function(d) { return xScale(formatDate.parse(d.Year)); })
	.y0(function(d) { return yScale(d.y0); })
	.y1(function(d) { return yScale(d.y0 + d.y); });

	var svg = d3.select("#chart").append("svg")
	.attr("width", fullwidth)
	.attr("height", fullheight)
	.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

	d3.csv("AlcoholConsumption.csv", setup);


	function setup(error, data) {

	if (error) { console.log(error) };

	originaldata = data; // assign to a global so i can use it in other function

	var dataset = d3.nest()
	.key(function(d) {
	return d.Country;
	})
	.sortKeys(d3.descending) // alphabetic order from top layer
	.sortValues(function (a, b) { return formatDate.parse(a.Year) - formatDate.parse(b.Year)})
	.entries(data);

	console.log(dataset);

	// set up the UI function:

	d3.selectAll("button").on("click", function() {
	var method = d3.select(this).attr("id"); // this is stream or stacked
	d3.selectAll("button").classed("selected", false);
	d3.select(this).classed("selected", true);
	redraw(dataset, method);
	});

	// default first view: create the axes, so you transition them in the redraw.

	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height + ")")
	.call(xAxis);

	svg.append("g")
	.attr("class", "y axis")
	.call(yAxis);

	redraw(dataset, "stacked"); // method is either stacked or stream

	}

	function redraw(dataset, method) {

	var layers;

	if (method == "stacked") {
	layers = stack(dataset); // this operation also modifies the dataset
	} else {
	layers = stream(dataset); // this operation also modifies the dataset
	}

	console.log("layers", layers); // it adds a y and y0 to the data values.

	// reset these AFTER doing the layer stacking.

	xScale.domain(d3.extent(originaldata, function(d) { return formatDate.parse(d.Year); }));
	yScale.domain([0, d3.max(originaldata, function(d) { return d.y0 + d.y; })]);


	var layers = svg.selectAll(".layer")
	.data(layers, function(d) {return d.key;});

	layers.enter().append("path")
	.attr("class", "layer")
	.append("title")
	.text(function(d) {
	return d.key; // country is the key
	});

	layers.transition().duration(1000)
	.attr("d", function(d) { return area(d.values); })
	.style("fill", function(d, i) { return colorScale(i); });

	layers.exit().remove();

	// transition your axes.
	d3.select(".x.axis").transition().call(xAxis);
	d3.select(".y.axis").transition().call(yAxis); // there is no visible change actually

	}


	</script>