# App: Marker clustering **URL:** \ **Category:** Implemented features\ **Tags:** implemented\ **Created:** [April 30, 2020, 5:47pm UTC](https://forum.kurviger.com/t/app-marker-clustering/3114 "2020-04-30T17:47:50Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![devemux86](https://forum.kurviger.com/user_avatar/forum.kurviger.com/devemux86/32/6239_2.png) [@devemux86](https://forum.kurviger.com/u/devemux86)\ **Post date:** [April 30, 2020, 5:47pm UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/1 "2020-04-30T17:47:50Z")
By clustering the markers, we can put a large number of markers on the map without making the map hard to read and hurting app performance. Useful with bookmarks, GPX waypoints, offline search, etc. 1. GPX-Datei mit vollen Namen from [Alpenrouten](https://alpenrouten.de/) (1635 waypoints) 2. [Offline search](https://forum.kurviger.com/t/app-offline-search/2118) with Berlin POI displaying all 20898 amenities > **[Cluster analysis](https://en.wikipedia.org/wiki/Cluster_analysis)** > > Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some specific sense defined by the analyst) to each other than to those in other groups (clusters). It is a main task of exploratory data analysis, and a common technique for statistical data analysis, used in many fields, including pattern recognition, image analysis, information retrieval, bioinformatics, data compression, computer graphics... ![Kurviger1](https://forum.kurviger.com/uploads/default/original/2X/7/703e58b87a31741a450f6580333363008fc6c648.jpeg) ![Kurviger2](https://forum.kurviger.com/uploads/default/original/2X/c/c34d4af8a51e24e08da7dbbbac537dadb72851b6.png) ![Kurviger3](https://forum.kurviger.com/uploads/default/original/2X/f/fa1af762e2efcdd175f5bf8d68c688a4b1f31b17.png) ![Kurviger4](https://forum.kurviger.com/uploads/default/original/2X/0/04658963d0358f255c372da3be14a262af6bbde7.png) ---
**Author:** ![radek.rehorek](https://forum.kurviger.com/user_avatar/forum.kurviger.com/radek.rehorek/32/1054_2.png) [@radek.rehorek](https://forum.kurviger.com/u/radek.rehorek)\ **Post date:** [April 30, 2020, 6:27pm UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/2 "2020-04-30T18:27:41Z")
Great! I have disabled most of POIs now because of this problem. ---
**Author:** ![devemux86](https://forum.kurviger.com/user_avatar/forum.kurviger.com/devemux86/32/6239_2.png) [@devemux86](https://forum.kurviger.com/u/devemux86)\ **Post date:** [April 30, 2020, 6:30pm UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/3 "2020-04-30T18:30:01Z")
The clustering is about marker overlays on the map. Not POI symbols in the map (i.e. Map layers). The solution there is show POI on larger zoom. ---
**Author:** ![devemux86](https://forum.kurviger.com/user_avatar/forum.kurviger.com/devemux86/32/6239_2.png) [@devemux86](https://forum.kurviger.com/u/devemux86)\ **Post date:** [May 5, 2020, 2:32pm UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/4 "2020-05-05T14:32:38Z")
Available in [Kurviger 1.13.16 (Beta)](https://forum.kurviger.com/t/kurviger-1-13-6-beta/2855). Adjustable in “Settings | Map | Maximum zoom level of marker groups”. ---
**Author:** ![devemux86](https://forum.kurviger.com/user_avatar/forum.kurviger.com/devemux86/32/6239_2.png) [@devemux86](https://forum.kurviger.com/u/devemux86)\ **Post date:** [May 6, 2020, 10:55am UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/5 "2020-05-06T10:55:40Z")
Next version will have an enhanced “Settings | Map | Maximum zoom level of marker groups” preference with more zoom levels and will be able to completely disable the marker groups. ---
**Author:** ![devemux86](https://forum.kurviger.com/user_avatar/forum.kurviger.com/devemux86/32/6239_2.png) [@devemux86](https://forum.kurviger.com/u/devemux86)\ **Post date:** [July 3, 2020, 7:42am UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/6 "2020-07-03T07:42:16Z")
Implemented in [Kurviger 1.13.17](https://forum.kurviger.com/t/kurviger-1-13-13/3705). ---
**Author:** ![boldtrn](https://forum.kurviger.com/user_avatar/forum.kurviger.com/boldtrn/32/360_2.png) [@boldtrn](https://forum.kurviger.com/u/boldtrn)\ **Post date:** [October 9, 2024, 10:28am UTC](https://forum.kurviger.com/t/app-marker-clustering/3114/7 "2024-10-09T10:28:23Z")