amcharts.getCategoryName

amcharts.getCategoryName(rawData: Object): String

Returns the name of a field that represents a category in the data for the chart.

The category is chosen as follows:

If the slice.rows array contains some fields, the first field from slice.rows is chosen as the category.
If the slice.rows array is empty and the slice.columns array contains some fields, the first field from slice.columns is chosen as the category.
If the slice.rows and slice.columns arrays are empty, then no category is available.

Parameters

Parameter/Type	Description
rawData Object	Raw data that contains the category. Check out the structure of rawData.

A string with a category name or null when no category is available.

1) Setting the categoryField for the pie series:

am5percent.PieSeries.new(root, {
  categoryField: pivot.amcharts.getCategoryName(rawData),
  // ...
});

2) Setting the categoryField for the category axis in a radar chart:

let xAxis = chart.xAxes.push(am5xy.CategoryAxis.new(root, {
  categoryField: pivot.amcharts.getCategoryName(rawData),
  renderer: xRenderer
}));

Setting the name for the amCharts 4 category axis:

let categoryAxis = chart.xAxes.push(new am4charts.CategoryAxis());
categoryAxis.dataFields.category = pivot.amcharts.getCategoryName(rawData);