AI-generated Key Takeaways
-
The Maps SDK for iOS Utility Library is an open-source library providing advanced features for your maps.
-
This library offers utilities for marker clustering, quadtrees, KML parsing, GeoJSON rendering, heatmaps, custom markers, and geometry operations.
-
The library includes a demo app demonstrating the use of each class.
-
Access the Maps SDK for iOS Utility Library and its documentation on GitHub.
Looking for advanced features to add to your maps? The Maps SDK for iOS Utility Library on GitHub is an open-source library of classes that are useful for a range of applications. The GitHub repository includes the utility classes and a demo app that illustrates the use of each class.
The utilities

Marker Clustering
The GMUClusterManager
helps you manage multiple markers at
different zoom levels. This means you can put a large number of markers
on a map without making the map hard to read. When a user views the map
at a high zoom level, the individual markers show on the map. When the
user zooms out to a lower zoom level, the markers gather together into
clusters, to make viewing the map easier.
For details, see the documentation on the Marker Clustering .
Quadtree
A quadtree is a data structure that's useful for finding points near a single point, by searching inside an area surrounding the point of interest.
For details, see the documentation on the Quadtree .

KML
KML is a popular format for rendering geographic data such as
points, lines, and polygons. The GMUKMLParser
lets you parse and render geographic data in the KML format.
For details, see the documentation on the KML .


Heatmaps
Heatmaps make it easy for viewers to understand the distribution and relative intensity of data points on a map. Rather than placing a marker at each location, heatmaps use color and shape to represent the distribution of data.
For details, see the documentation on the Heatmaps .

Custom markers
Use the delegate GMUClusterRendererDelegate
on GMUDefaultClusterRenderer
to customize the properties of a marker before and
after it is added to the map.

Geometry utilities
A set of Swift spherical geometry utility functions of the GMSGeometryUtils
module of the Maps SDK for iOS. Use these extensions to perform many types of geometric
operations, including:
- Determine the great circle distance between coordinates
- Determine if a coordinate is inside a polygon
- Determine if a coordinate lies on or near a path within a specified tolerance
- Determine the area of this polygon
- many others

