or
series: [
{
type: "pie",
field: "value",
categoryField: "category",
aggregate: "sum",
padding: 10,
overlay: {
gradient: "none",
},
categoryAxis: {
baseUnit: "months",
maxDivisions: 5,
rangeLabels: {
visible: true,
format: "M"
},
labels: {
format: "d-M"
}
},]