:warning: This project is old and poorly tested! If it seems like something you might need, check out Turf.js, which does most of what Geoff aimed to do and much, much more.

Geoff: GeoJSON Feature Functions for JavaScript

Geoff is a collection of functions for working with GeoJSON features. Among its many talents:

• creating and manipulating GeoJSON features
• sorting and aggregating GeoJSON feature properties
• manipulating dynamic (but non-destructive) feature collections
• augmenting Polymaps with awesome, new capabilities