# Welcome to the Highcharts Maps JS (highmaps) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

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# series.heatmap.mapData

An array of objects containing a `geometry` or `path` definition and optionally additional properties to join in the `data` as per the `joinBy` option. GeoJSON and TopoJSON structures can also be passed directly into `mapData`.