anchor.diff:                  .call(force.drag().on("dragstart", dragstart));
   
           nodeEnter.append("circle")
  -                .attr("r", function(d) {return scaleNode(d);});
  +                .attr("r", function(d) {return scaleNodes(d);});
  +                //.attr("r", 10);
   
           var taxon_link = nodeEnter.append("text")
                   .attr("dy", ".35em")
  
positive.code:         d3.select(this).classed("fixed", d.fixed = true);
      }
  
      function scaleNode(d) {
          var radius_size = 5;
  
          if (d.especies_inferiores_conteo > 0)
          {
              /*if (d.especies_inferiores_conteo >= 10000 && d.especies_inferiores_conteo <= 19999) radius_size = d.especies_inferiores_conteo/10000;
              if (d.especies_inferiores_conteo >= 20000 && d.especies_inferiores_conteo <= 29999) radius_size = d.especies_inferiores_conteo/20000;
              if (d.especies_inferiores_conteo >= 30000 && d.especies_inferiores_conteo <= 39999) radius_size = d.especies_inferiores_conteo/30000;
              if (d.especies_inferiores_conteo >= 40000 && d.especies_inferiores_conteo <= 49999) radius_size = d.especies_inferiores_conteo/40000;
              if (d.especies_inferiores_conteo >= 50000 && d.especies_inferiores_conteo <= 59999) radius_size = d.especies_inferiores_conteo/10000;*/
  
              if (d.especies_inferiores_conteo >= 10000) radius_size = d.especies_inferiores_conteo/10000;
              if (d.especies_inferiores_conteo >= 1000 && d.especies_inferiores_conteo <= 9999) radius_size = d.especies_inferiores_conteo/1000;
              if (d.especies_inferiores_conteo >= 100 && d.especies_inferiores_conteo <= 999) radius_size = d.especies_inferiores_conteo/100;
              if (d.especies_inferiores_conteo <= 100 && d.especies_inferiores_conteo >= 10) radius_size = 10;
          }
          return radius_size;
      }
  </script>
  
negative.code:         if (error) throw error;
  
          root = json;
          max_value = root.especies_inferiores_conteo;
          update();
      });
  
  