anchor.diff:              } else {
                   jQuery("#cl-km").attr('disabled', 'disabled');
               }
  -            hm_cl.clusterVariables(); // clustering method will call draw action within it.
  +            if (feature_count <= 50) {
  +                hm_cl.clusterVariables(); // clustering method will call draw action within it.
  +            }
               // cx_cellline.kmeansVariables();
               hm_cl.draw();
   
  
positive.code:                                                   }}
                                           );
  
              if (feature_count > 3 && feature_count < 300) {
                  hm_ds.clusterSamples();
                  hm_ds.kmeansSamples();
  
  
negative.code:                jQuery("#description").toggle("slow");
              });
  
  
             // hm - heatmap; cl - cellline; ds - developmentalstage; hc - hierarchical clustering; km - kmeans
              var hm_cl = new CanvasXpress('canvas_cl',
                                           ${expressionScoreJSONCellLine},
  