Time geographic analysis of wildlife telemetry data

Download wildlifeTG from Github

The wildlifeTG package was developed to provide open access to the PPA home range, and associated methods, developed in our papers (see references). The PPA method has been subsequently extended to include a dynamic version which is able to account for changes in movement behaviour phases, and thus models the vmax parameter dynamically. Currently, we are working on additional functions to compute a measure of joint space use, termed jPPA, that will be useful for mapping areas of potential interaction in wildlife telemetry datasets when multiple animals are tracked simultaneously.

We welcome any and all feedback concerning these tools.

Tools in wildlifeTG

  1. potential path area (PPA) home ranges
  2. joint potential path area (jPPA) measures of spatial temporal ovelap
  3. 3D potential path area (3DPPA)
  4. time geographic kernel density estimation (TGKDE)
  5. field-based time geographic utilization distribution (FBTGUD)
  6. randomized shortest path utilization distrubution (rspUD)


The wildlifeTG package has been developed for use within the statistical software R. The functions rely heavily on the data structures and methods developed in the adehabitat suite of packages developed by C. Calenge and for the field-based time geography function the gdistance package by J. van Etten.

The wildlifeTG package is still in development, but you can download the latest version directly from GITHUB into R. 

Also, be sure to check out the documentation associated with the wildlifeTG package for more detailed instructions.