anchor.diff:                          $('#oncoprint .loader_img').hide();
                           $('#oncoprint #everything').show();
   
  -                        oncoprintZoomSetup(oncoprint, $('#oncoprint_controls #zoom'));
  +                        oncoprintZoomSetup($('#oncoprint_controls #zoom'));
                       }
                   });
   
                   var select_clinical_attributes_id = '#select_clinical_attributes';
                   var oncoprintClinicals;
  -
                   var sortBy = $('#oncoprint_controls #sort_by');
   
  +                // handler for when user selects a clinical attribute to visualization
                   var clinicalAttributeSelected = function() {
                       oncoprint.remove_oncoprint();
                       $('#oncoprint_body .loader_img').show();
  
positive.code:                                     clinical_attrs: response.attributes()
                                  });
  
                                  $(sortBy.add('option[value="clinical"]')[1]).prop('disabled', false);
  
                                  sortBy.val('genes');
                              }
                          });
                      }
                  };
                  $(select_clinical_attributes_id).change(clinicalAttributeSelected);
  
                  $('#oncoprint_controls #sort_by').change(function() {
                      oncoprint.sortBy(sortBy.val());
                  });
  
negative.code:                             genes: geneDataColl.genes.split(" ")
                          });
  
                          // disable the option to sort by clinical data
                          $(sortBy.add('option[value="clinical"]')[1]).prop('disabled', true);
                      } else {
                          oncoprintClinicals = new ClinicalColl({
  