The Map widget supports overlays in the form of layers.
A dedicated shape layer
deals with vector shapes and provides built-in data binding to GeoJSON. It can render as SVG, Canvas or VML depending on browser capabilities.
We intend to make it easier to draw any shapes without going through GeoJSON, but that still requires a bit of work on our side.
Note that Point geometries
will be automatically converted to markers. We also provide a dedicated marker layer
I hope this helps.
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