trajr: An R package for characterisation of animal trajectories
Donald James McLean , Marta Skowron Volponi
AbstractQuantitative characterisation of the trajectories of moving animals is an important component of many behavioural and ecological studies, however methods are complicated and varied, and sometimes require well-developed programming skills to implement. Here, we introduce trajr, an R package that serves to analyse animal paths, from unicellular organisms, through insects to whales. It makes a variety of statistical characterisations of trajectories, such as tortuosity, speed and changes in direction, available to biologists who may not have a background in programming. We discuss a range of indices that have been used by researchers, describe the package in detail, then use movement observations of whales and clearwing moths to demonstrate some of the capabilities of trajr. As an open-source R package, trajr encourages open and reproducible research. It supports the implementation of additional methods by providing access to trajectory analysis “building blocks,” allows the full suite of R statistical analysis tools to be applied to trajectory analysis, and the source code can be independently validated.
|Journal series||Ethology, ISSN 0179-1613, (A 30 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||behaviour, locomotor mimicry, navigation, speed, tortuosity, whales|
|License||Other; published final; ; with publication|
|Score|| = 30.0, 11-11-2018, ArticleFromJournal|
= 30.0, 11-11-2018, ArticleFromJournal
|Publication indicators||: 2016 = 1.398 (2) - 2016=1.575 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.