ds

<!DOCTYPE html>
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
  <meta charset="utf-8">
  <title>Data Science books</title>

</head>
<body>

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

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 + ")");

d3.tsv("https://gist.githubusercontent.com/aaizemberg/b683ef1f1f153bc2b260/raw/03e98b8c8d718f5a5a4acef48964258f09a01f49/ds.tsv", function(error, data) {
  if (error) throw error;

data.forEach(function(d) {
    d.x = +d.year;
    d.y = +d.pages;
  });

x.domain([2012.5,2015.5]);
  y.domain([0,500]);

svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.svg.axis().ticks(3).scale(x).orient("bottom"));

svg.append("g")
      .attr("class", "y axis")
      .call(d3.svg.axis()
            .ticks(5)
            .scale(y)
            .orient("left"));

svg.selectAll(".point")
      .data(data)
    .enter()
      .append("image")
      .attr("class","out")
      .attr("x", function(d) { return x(d.x)-(75/2); })
      .attr("width","75px")
      .attr("y", function(d) { return y(d.y)-(100/2); })
      .attr("height","100px")
      .attr("xlink:href", function(d) { return d.img;} )
      .on("mouseover", function() { d3.select(this).attr("class", "over");  })
      .on("mouseout" , function() { d3.select(this).attr("class", "out"); })
      .append("title")
        .html(function(d) {return d.title + "<br>" + d.subtitle;} );
  });
  
  svg.append("text")
     .attr("text-anchor", "middle")  
     .attr("transform", "translate(-20,13)" )  
     .text("pages");
     
  svg.append("text")
     .attr("text-anchor", "middle")  
     .attr("transform", "translate("+ (width-10) +","+(height+16)+")")  
     .text("year");
     
</script>  
  
</body>
</html>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js