Skip to main content
U.S. flag

An official website of the United States government

Track Segmentation: Stops and Movements

July 9, 2025

This R script inputs animal tracking data and segments the time series for each individual animal into sequential periods of stops and movements. The algorithm identifies stops based on two influential user-defined thresholds: 1) a distance threshold (hereafter 'Dist') that defines the upper limit of spatial displacement permissible while occupying a stop, and 2) a duration threshold (hereafter 'Dur') that defines the minimum amount of time a stop is required to persist. Values for the Dist and Dur should be chosen in a manner that targets animal behavior(s) of interest while also accommodating the spatial accuracy and temporal frequency of the location data under analysis. Locations not classified as stops are classified as movements. A "User Guide" is included in the software package.

Publication Year 2025
Title Track Segmentation: Stops and Movements
DOI 10.5066/P13QURM9
Authors David C Douglas
Product Type Software Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Alaska Science Center
Rights This work is marked with CC0 1.0 Universal
Was this page helpful?