Æliens

    var data = [32, 57, 112],
        dataEnter = data.concat(293),
        dataExit = data.slice(0, 2),
        w = 360,
        h = 180,
        x = d3.scale.ordinal().domain([57, 32, 112]).rangePoints([0, w], 1),
        y = d3.scale.ordinal().domain(data).rangePoints([0, h], 2);
  

    (function() {
      var svg = d3.select("#chart-3").append("svg")
          .attr("width", w)
          .attr("height", h);
    
  

      var circle = svg.selectAll(".little")
          .data(data)
        .enter().append("circle")
          .attr("class", "little")
          .attr("cx", x)
          .attr("cy", y)
          .attr("r", 12);
    
  

      d3.select("#chart-3 button").on("click", function() {
        circle.style("fill", "#aaa").attr("r", 12).attr("cy", y);
        circle.transition().duration(500).delay(0).style("fill", "steelblue");
        circle.transition().duration(500).delay(500).attr("cy", 90);
        circle.transition().duration(500).delay(1000).attr("r", 30);
      });
    })();