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Google Maps supports various types of overlays, ranging from markers with associated info windows, through polylines, all the way to circles, rectangles, squares and other kinds of polygons.

<aside> πŸ”‘ Disambiguation: overlays discussed in this chapter will also be called artifacts to differentiate them from 5. Data Layers & Overlays.


You would typically:

Unless customized, all these artifacts are vectorized β€” meaning that when you move or zoom the map, the overlays move and scale up/down without pixelation and in sync with the map canvas.

<aside> πŸ’‘ The following concepts require elementary knowledge of geographic coordinates, as presented in the previous chapter.



I’d like to display my chain of restaurants on a Google Map and display 0.5mi circles around each location: