Pie chart options The options of pie chart is all within the series.pie. In order to make chart come out as pie chart, you have to set series.pie.show to true. We also do some customization with the labels, by default, the legend will show up, but if you want pie chart to show labels instead of the legend, you can set legend.show to false. Label.radius is to set radius at which to place the labels, if the value is between 0 and 1, then it will use that value as a percentage of available space, otherwise it will be used as a direct pixel length. We also use label.formatter to customize the labels. And label.background.opacity is used to set opacity of background, and label.background.color is used to set background color.