andrehigher/index.html

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px sans-serif;
}

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

.dot {
  stroke: #000;
}

div.tooltip {
    position: absolute;
    text-align: center;
    width: 80px;
    height: 48px;
    padding: 2px;
    font: 12px sans-serif;
    background: lightsteelblue;
    border: 0px;
    border-radius: 8px;
    pointer-events: none;
}

</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>

var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var x = d3.scale.linear()
    .range([0, width]);

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

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

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

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var color = d3.scale.category10();

d3.tsv("worldcup.tsv", function(error, data) {
  if (error) throw error;

  data.forEach(function(d) {
    d.Age = +d.Age;
    d.Selections = +d.Selections;
  });

  x.domain(d3.extent(data, function(d) { return d.Selections; }));
  y.domain(d3.extent(data, function(d) { return d.Age; })).nice();

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
    .append("text")
      .attr("class", "label")
      .attr("x", width)
      .attr("y", -6)
      .style("text-anchor", "end")
      .text("Selections");

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("class", "label")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Age");

  // Define the div for the tooltip
var div = d3.select("body").append("div")
    .attr("class", "tooltip")
    .style("opacity", 0);

  svg.selectAll(".dot")
      .data(data)
    .enter().append("circle")
      .attr("class", "dot")
      .attr("r", 6.5)
      .attr("cx", function(d) { return x(d.Selections); })
      .attr("cy", function(d) { return y(d.Age); })
      .attr("fill", function(d, i) {
            return color(d.Country);
        })
      .on("mouseover", function(d, i) {
          console.log(d);
            d3.select(this)
            	.attr("fill", "red");
            div.transition()
                .duration(200)
                .style("opacity", .9);
            div	.html("<b>" + d.Country + "</b><br/>"  + d.Player)
                .style("left", (d3.event.pageX) + "px")
                .style("top", (d3.event.pageY - 28) + "px");
        })
        .on("mouseout", function(d, i) {
            d3.select(this).attr("fill", function() {
                return color(d.Country);
            });
            div.transition()
                .duration(500)
                .style("opacity", 0);
        });

  var legend = svg.selectAll(".legend")
      .data(color.domain())
    .enter().append("g")
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(30," + i * 20 + ")"; });

  legend.append("rect")
      .attr("x", width - 18)
      .attr("width", 18)
      .attr("height", 18)
      .style("fill", color);

  legend.append("text")
      .attr("x", width - 24)
      .attr("y", 9)
      .attr("dy", ".35em")
      .style("text-anchor", "end")
      .text(function(d) { return d; });

});

</script>
</body>
</html>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	body {
	font: 10px sans-serif;
	}

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

	.dot {
	stroke: #000;
	}

	div.tooltip {
	position: absolute;
	text-align: center;
	width: 80px;
	height: 48px;
	padding: 2px;
	font: 12px sans-serif;
	background: lightsteelblue;
	border: 0px;
	border-radius: 8px;
	pointer-events: none;
	}

	</style>
	<body>
	<script src="https://d3js.org/d3.v3.min.js"></script>
	<script>

	var margin = {top: 20, right: 20, bottom: 30, left: 40},
	width = 960 - margin.left - margin.right,
	height = 500 - margin.top - margin.bottom;

	var x = d3.scale.linear()
	.range([0, width]);

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

	var xAxis = d3.svg.axis()
	.scale(x)
	.orient("bottom");

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

	var svg = d3.select("body").append("svg")
	.attr("width", width + margin.left + margin.right)
	.attr("height", height + margin.top + margin.bottom)
	.append("g")
	.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

	var color = d3.scale.category10();

	d3.tsv("worldcup.tsv", function(error, data) {
	if (error) throw error;

	data.forEach(function(d) {
	d.Age = +d.Age;
	d.Selections = +d.Selections;
	});

	x.domain(d3.extent(data, function(d) { return d.Selections; }));
	y.domain(d3.extent(data, function(d) { return d.Age; })).nice();

	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height + ")")
	.call(xAxis)
	.append("text")
	.attr("class", "label")
	.attr("x", width)
	.attr("y", -6)
	.style("text-anchor", "end")
	.text("Selections");

	svg.append("g")
	.attr("class", "y axis")
	.call(yAxis)
	.append("text")
	.attr("class", "label")
	.attr("transform", "rotate(-90)")
	.attr("y", 6)
	.attr("dy", ".71em")
	.style("text-anchor", "end")
	.text("Age");

	// Define the div for the tooltip
	var div = d3.select("body").append("div")
	.attr("class", "tooltip")
	.style("opacity", 0);

	svg.selectAll(".dot")
	.data(data)
	.enter().append("circle")
	.attr("class", "dot")
	.attr("r", 6.5)
	.attr("cx", function(d) { return x(d.Selections); })
	.attr("cy", function(d) { return y(d.Age); })
	.attr("fill", function(d, i) {
	return color(d.Country);
	})
	.on("mouseover", function(d, i) {
	console.log(d);
	d3.select(this)
	.attr("fill", "red");
	div.transition()
	.duration(200)
	.style("opacity", .9);
	div .html("<b>" + d.Country + "</b><br/>" + d.Player)
	.style("left", (d3.event.pageX) + "px")
	.style("top", (d3.event.pageY - 28) + "px");
	})
	.on("mouseout", function(d, i) {
	d3.select(this).attr("fill", function() {
	return color(d.Country);
	});
	div.transition()
	.duration(500)
	.style("opacity", 0);
	});

	var legend = svg.selectAll(".legend")
	.data(color.domain())
	.enter().append("g")
	.attr("class", "legend")
	.attr("transform", function(d, i) { return "translate(30," + i * 20 + ")"; });

	legend.append("rect")
	.attr("x", width - 18)
	.attr("width", 18)
	.attr("height", 18)
	.style("fill", color);

	legend.append("text")
	.attr("x", width - 24)
	.attr("y", 9)
	.attr("dy", ".35em")
	.style("text-anchor", "end")
	.text(function(d) { return d; });

	});

	</script>
	</body>
	</html>