 
   indRect
     .on("mouseover", (d) ->
-              d3.select(this).attr("opacity", "1")
+              d3.select(this)
+                 .attr("opacity", "1")
               d3.select("#histline")
                  .datum(data.counts[d])
                  .attr("d", histline)

       .attr("stroke-width", "2")


  lowsvg.append("text")
        .datum(randomInd)
        .attr("x", w/2)

       .attr("width", 2)
       .attr("id", d)
       .attr("height", yScale(data.quant[0][d]) - yScale(data.quant[nQuant-1][d]))
       .attr("opacity", 0)
       .attr("stroke", "none")

  # vertical rectangles representing each array
  indRectGrp = svg.append("g")
