anchor.diff:                  ["rppa_protein_level_vs_mrna", "RPPA Protein Level vs. mRNA"]
               ];
       var data_type_copy_no, data_type_mrna, xLegend, yLegend;
  +
   </script>
   <%
       String cancer_study_id = (String)request.getParameter("cancer_study_id");
  
positive.code:             if ((xData[i] == "NaN") || (yData[i] == "NaN")) {
                  continue;
              }
              dataset[index] = [xData[i], yData[i], zData[i]];
              index += 1;
          }
      } else if (type == 3) {  //rppa_protein_level_vs_mrna
  
negative.code:     var yLegend = axisTitles[1];
      var tmp_plot_type = document.getElementById("plot_type").value;
      if (tmp_plot_type == plot_type_list[0][0]) {    //"mrna_vs_copy_no"
          drawScatterPlots(copy_no, mrna, mutations, xLegend, yLegend, 1, mutations);
      } else if (tmp_plot_type == plot_type_list[1][0]) {  //"mrna_vs_dna_mythelation"
          drawScatterPlots(dna_methylation, mrna, copy_no, xLegend, yLegend, 2, mutations);
      } else if (tmp_plot_type == plot_type_list[2][0]) {  //"rppa_protein_level_vs_mrna"
          drawScatterPlots(mrna, rppa, copy_no, xLegend, yLegend, 3, mutations);
      }
  }
  
  
  function drawScatterPlots(xData, yData, zData, xLegend, yLegend, type, mutations) {
      var dataset = [];
      //Create Canvas
      $('#plots_tab').empty();
      var w = 700;
  