title: highcharts graph no show yaxis values
body: <p>The graph does not show the y-axis values​​.  Could anyone help me with this? thanks.</p>
  
  <p>If I put the value of <code>prueba</code> in the series data, everything worsk correctly
  the <code>prueba</code> array and the <code>dinero</code> array are displayed correctly.</p>
  
  <p>Thanks,</p>
  
  <pre><code>$.getJSON('http://localhost/jquery/grafica4.php', function(data) {
  
      var dinero = [];
      var categories = [];
      var prueba = [79, 71, 66,44,42,38,32,10];
  
      $.each(data, function(index, value) {
          categories.push(data[index].producto_id);
          dinero.push(data[index].cantidad);
          alert("hola");
      });
      alert(dinero);
      alert(prueba);
  
      chart4 = new Highcharts.Chart({
          chart: {
              renderTo: 'container3',
              type: 'column'
          },
          title: {
              text: 'Productos más vendidos'
          },
          xAxis: {
              categories: categories
          },
          yAxis: {
              min: 0,
              title:
              text: 'Cantidad'
          },
          labels: {
              formatter: function() {
                  return this.value; // clean, unformatted
              }
          }
      },
      legend: {
          layout: 'vertical',
          backgroundColor: '#FFFFFF',
          align: 'left',
          verticalAlign: 'top',
          x: 100,
          y: 70,
          floating: true,
          shadow: true
      },
      tooltip: {
          formatter: function() {
              return ''+
              '&lt;b&gt;'+'Producto:'+this.x +'&lt;/b&gt;'+'&lt;br/&gt;'+ this.y+ ' unidades';
          }
      },
      plotOptions: {
          column: {
              pointPadding: 0.3,
              borderWidth: 0
          }
      },
      series: [{
          name: 'Cantidad',
          data: dinero
      }],
      exporting: {
          filename: 'Facturacion-de-empleados'
      }
  });
  });
  </code></pre>