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@googlemaps/markerclusterer
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The library creates and manages per-zoom-level clusters for large amounts of markers.
See the history section and migration section for how this library relates to @google/markerclusterer and @googlemaps/markerclustererplus.
Available via npm as the package @googlemaps/markerclusterer.
npm i @googlemaps/markerclusterer
Alternativly you may add the umd package directly to the html document using the unpkg link.
<script src="https://unpkg.com/@googlemaps/markerclusterer/dist/index.min.js"></script>
When adding via unpkg, the MarkerClusterer
can be accessed at markerClusterer.MarkerClusterer
.
This library uses the official TypeScript typings for Google Maps Platform, @types/google.maps.
npm i -D @types/google.maps
The reference documentation is generated from the TypeScript definitions.
import { MarkerClusterer } from "@googlemaps/markerclusterer";
// use default algorithm and renderer
const markerCluster = new MarkerClusterer({ map, markers });
View the package in action:
Algorithm Comparisons - This example demonstrates the different algorithms. Please note that spacing and many other options can be changed for each algorithm.
Renderer Usage - This example demonstrates different renderers similar to the image below.
This library has a heritage in @google/markerclusterer and @googlemaps/markerclustererplus, originally made available on code.google.com and then transferred to GitHub at https://github.com/googlemaps/v3-utility-library. The following is an approximate timeline.
The API of @googlemaps/markerclusterer has changed in a number of ways from @googlemaps/markerclustererplus.
MarkerClusterer
class now accepts an algorithm
and renderer
parameter to allow for more flexibility. The interface looks like the following:{
algorithm?: Algorithm;
map?: google.maps.Map;
markers?: google.maps.Marker[];
renderer?: Renderer;
onClusterClick?: onClusterClickHandler;
}
MarkerClusterer
accepts a single options argument instead of positional parameters.GridAlgorithm
is still supported, but is not the default. The default is supercluster which uses k-d trees for improved performance.MarkerClusterer
class is still an instance of google.maps.OverlayView
, but uses google.maps.Marker
s instead of google.maps.Overlay
to render the clusters. This solves issues related to the usage of map panes and click handlers.FAQs
Creates and manages per-zoom-level clusters for large amounts of markers.
We found that @googlemaps/markerclusterer demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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