anchor.diff:        .append("text")
           .attr("class", "label")
           .attr("transform", "rotate(-90)")
  -        .attr("y", 6)
  +        .attr("y1", 6)
           .attr("dy", ".71em")
           .style("text-anchor", "end")
           .text("collaborator")
  
positive.code: </div>
  <style>
  
  .bar rect {
    fill: steelblue;
  }
  
  .bar text {
    fill: #fff;
    font: 10px sans-serif;
  }
  
  </style>
  
  <script src="https://d3js.org/d3.v3.min.js"></script>
  
negative.code:         .data(data)
        .enter().append("circle")
          .attr("class", "dot")
          .attr("r", 10)
          .attr("cx", function(d) { 
            console.log("cont "+d.cont)
            return x1(d.cont); })
          .attr("cy", function(d) { 
            console.log("collab "+d.collab)
            return y1(d.collab); })
          .style("fill", "black")
  
      // var legend = svg.selectAll(".legend")
      //     .data(color.domain())
  