Turf.js is a JavaScript library for client-side programming

It includes a set of functions for geoprocessing tasks

The basic data type that turf.js works with is GeoJSON

To use the library in a web page, import it from CDN https://cdnjs.../turf.min.js using script element

Leaflet needs coordinates as [[lat0, lon0], [lat1, lon1]] form

Turf.js needs coordinates as [lon0, lat0, lon1, lat1] form

Bitbucket: Turf.js - turf.greatCircle function

Home: Turf.js - turf.greatCircle function

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Queries about this Lesson, please send them to: jmwaura@jkuat.ac.ke

*References*

• Google Maps; Power Tools for Maximizing the API, 2014 Evangelos Petroutsos
• D3 Tips and Tricks; Interactive Data Visualization in a Web Browser, 2013 Malcolm Maclean
• Interactive Data Visualization for the Web, 2013 Scott Murray
• Web Programming with HTML5, CSS, and JavaScript, 2019 John Dean
• Leaflet Documentation Leaflet Team
• Google Documentation for developers Google Team