ZoomCharts Documentation

Hierarchy

Pie Chart uses identifiers to support hierarchical data display. Each pie and slice has it's own identifier, stored in the id field.

When user clicks on a slice the corresponding slice identifier is used to load a new sub-pie with the same identifier. A new data request is made and data source must return data for that pie.

If you want to just have a simple flat Pie Chart, just skip the ID field.