Rendering Incremental Points on Maps with Ruby and Rails

Rendering Incremental Points on Maps with Ruby and Rails

January 30, 2026

When working with maps in Ruby or Ruby on Rails applications, most solutions assume that all geospatial data must be prepared upfront — usually as GeoJSON layers. While this works well for static datasets, it becomes inefficient when dealing with event-driven data such as sales, visits, calls, or real-time activity.

In many Rails applications, new coordinates arrive one by one through an API. Rebuilding or reprocessing a full GeoJSON layer for each update is unnecessary overhead.

To address this, I added a new API to libgd-gis : add_point.

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https://rubystacknews.com/2026/01/30/rendering-incremental-points-on-maps-with-ruby-and-rails/