Friday, 15 January 2016

web mapping - Visualizing large datasets with Leaflet


When using Leaflet to visualize a large dataset (GeoJSON with 10,000 point features), not surprisingly the browser crashes or hangs. A sub-sample of 1000 features from the same dataset works flawlessly. Unfortunately I can't share the dataset for others to try out.


Does anybody have better solutions for visualizing such large datasets? (ultimate aim is to scale this to 2 million features) I'm even willing to consider offline visualization frameworks in case browser based alternatives such as Polymaps or d3.js etc. are deemed incapable.



Edit: Forgot to mention, the user needs to be able to filter the dataset by attributes. So out of N features, only the matching n <= N features might need to be dynamically rendered.




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