GPX

From IndieWeb

GPX (or the GPX Exchange Format) is an XML format for storing GPS tracklogs. It is used by most consumer GPS devices including handheld hiking, cycling and car-mount navigation systems, and is supported by apps for most smartphones.

The GPX file contains "track points" which are individual readings of location combined with optional elevation data and a timestamp (in ISO 8601 format). Put together, these can be used to produce a visualisable trace which can be rendered on top of a map.

Photo tagging

Apple's Aperture software allows you to add geographical metadata to images using a GPX trace by matching timestamps between the camera and the location in the tracklog stored in the GPX file.

See also