maximumZ
The maximum zoom level that the tiles of this overlay object support.
Declaration
var maximumZ: Int { get set }Discussion
If you use different overlay objects to represent different tiles at different zoom levels, use this property to specify the maximum zoom level that this overlay’s tiles support. At zoom level 0, tiles cover the entire world map; at zoom level 1, tiles cover 1/4 of the world; at zoom level 2, tiles cover 1/16 of the world, and so on. The map doesn’t attempt to load tiles for a zoom level greater than the value that this property specifies.
The default value of this property is 21. Setting the value of this property to a number greater than the default doesn’t ensure the use of those extra zoom levels.