data


    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);
  

overview


  -->
    
    <ol>
    <li>enter - incoming actors, entering the stage.</li>
    
    <li>update - persistent actors, staying on stage.</li>
    
    <li>exit - outgoing actors, exiting the stage.</li>
    </ol>
  <!--
  

script


    (function() {
      var svg = d3.select("#chart-13").append("svg")
          .attr("width", w)
          .attr("height", h);
  
  

select


      var gd = svg.selectAll(".data")
          .data([32, 57, 293])
        .enter().append("g")
          .attr("class", "data")
          .attr("transform", function(d, i) { return "translate(" + 20 * (i + 1) + ",20)"; });
    
  

filter(s)


      var ed = gd.filter(function(d, i) { return i == 2; }),
          ud = gd.filter(function(d, i) { return i != 2; });
    
      ed.append("circle")
          .attr("class", "little")
          .attr("r", 1e-6);
    
      gd.append("rect")
          .attr("x", -10)
          .attr("y", -10)
          .attr("width", 20)
          .attr("height", 20);
    
      gd.append("text")
          .attr("dy", ".35em")
          .attr("text-anchor", "middle")
          .text(String);
    
  

select


      var ge = svg.selectAll(".element")
          .data(data)
        .enter().append("g")
          .attr("class", "element")
          .attr("transform", function(d) { return "translate(" + d + ",90)"; });
    
  

append


      ge.append("circle")
          .attr("class", "little")
          .attr("r", Math.sqrt);
    
      ge.append("text")
          .attr("dy", ".35em")
          .attr("text-anchor", "middle")
          .text(String);
    
      ed.select("rect")
          .style("fill", "lightgreen")
          .style("stroke", "green");
    
  

circle


      var xe = ge.filter(function(d, i) { return i == 2; });
    
      xe.select("circle")
          .style("fill", "lightcoral")
          .style("stroke", "red");
    
  

button


      d3.select("#chart-13 button").on("click", function() {
        gd
            .attr("transform", function(d, i) { return "translate(" + 20 * (i + 1) + ",20)"; })
          .transition()
            .duration(750)
            .attr("transform", function(d) { return "translate(" + d + ",90)"; });
  

transition


    
        gd.select("rect")
            .style("opacity", 1)
          .transition()
            .duration(750)
            .style("opacity", 1e-6);
    
        ed.select("circle")
            .attr("r", 1e-6)
          .transition()
            .duration(750)
            .attr("r", Math.sqrt);
    
        xe.select("circle")
            .attr("r", Math.sqrt)
          .transition()
            .duration(750)
            .attr("r", 1e-6);
    
        xe.select("text")
            .style("opacity", 1)
          .transition()
            .duration(750)
            .style("opacity", 1e-6);
      });
    })();