Trajectory Analysis in R
An R package for analysing animal trajectories, which represent the
movements of animals through space and time. It provides functions to
easily calculate various quantitative measures of trajectories such as
speed and straightness or tortuosity. It also provides a range of other
trajectory operations such as resampling to fixed step lengths
(rediscretization), determining turning angles and step
lengths, and so on. While mainly focussed on 2-dimensional trajectories,
trajr does have some functionality for analysing
3-dimensional trajectories. If you use trajr in your
research, please cite McLean, D. J., & Skowron
Volponi, M. A. (2018). trajr: An R package for characterisation of
animal trajectories. Ethology, 124(6), 440-448.
https://doi.org/10.1111/eth.12739.
trajr does not provide functionality to create
trajectories; it operates on existing trajectories that are sequences of
(x, y, time) coordinates. It does, however, provide some
functionality to generate random or constrained trajectories for
simulations or for testing of analyses.
Refer to NEWS.md for a list of changes in each
version. The article trajr:
An R package for characterisation of animal trajectories described
trajr version 1.0.0. Please refer to NEWS.md for a brief summary of what has changed since
the article was written.
$ install.packages("trajr")Or to install the latest development version directly from Github:
$ install.packages("devtools")
$ devtools::install_github("JimMcL/trajr")Or else, to install from Github and get the user documentation (vignette):
$ install.packages("devtools")
$ devtools::install_github("JimMcL/trajr", build_vignettes = TRUE)Unfortunately, installing vignettes can be time-consuming.
The best way to start is to read our paper and the package
vignette. After installation from CRAN (or from github including
vignettes), the vignette can be accessed by running
browseVignettes(package = "trajr"). The vignette for the
CRAN version is available on CRAN at
https://cran.r-project.org/web/packages/trajr/vignettes/trajr-vignette.html.
A vignette demonstrating trajectory simulation is available online at https://cran.r-project.org/web/packages/trajr/vignettes/simulations.html.
─ Session info ────────────────────────────────────────────────────────────────────────────────────────────────────────────
setting value
version R version 4.2.2 (2022-10-31 ucrt)
os Windows 10 x64 (build 22631)
system x86_64, mingw32
ui RStudio
language (EN)
collate English_Australia.utf8
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tz Australia/Sydney
date 2023-11-28
rstudio 2023.09.1+494 Desert Sunflower (desktop)
pandoc 2.9.2.1 @ C:\\Users\\87054612\\AppData\\Local\\Pandoc\\pandoc.exe
─ Packages ────────────────────────────────────────────────────────────────────────────────────────────────────────────────
package * version date (UTC) lib source
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callr 3.7.3 2022-11-02 [1] CRAN (R 4.2.2)
cli 3.6.0 2023-01-09 [1] CRAN (R 4.2.2)
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magrittr 2.0.3 2022-03-30 [1] CRAN (R 4.2.0)
MASS 7.3-58.1 2022-08-03 [2] CRAN (R 4.2.2)
memoise 2.0.1 2021-11-26 [1] CRAN (R 4.2.0)
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miniUI 0.1.1.1 2018-05-18 [1] CRAN (R 4.2.2)
pkgbuild 1.4.0 2022-11-27 [1] CRAN (R 4.2.2)
pkgload 1.3.2 2022-11-16 [1] CRAN (R 4.2.2)
prettyunits 1.1.1 2020-01-24 [1] CRAN (R 4.2.0)
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profvis 0.3.7 2020-11-02 [1] CRAN (R 4.2.1)
promises 1.2.0.1 2021-02-11 [1] CRAN (R 4.2.0)
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purrr 1.0.1 2023-01-10 [1] CRAN (R 4.2.2)
R6 2.5.1 2021-08-19 [1] CRAN (R 4.2.0)
Rcpp 1.0.10 2023-01-22 [1] CRAN (R 4.2.2)
remotes 2.4.2 2021-11-30 [1] CRAN (R 4.2.0)
rlang 1.1.0 2023-03-14 [1] CRAN (R 4.2.3)
rstudioapi 0.14 2022-08-22 [1] CRAN (R 4.2.2)
sessioninfo 1.2.2 2021-12-06 [1] CRAN (R 4.2.0)
shiny 1.7.4 2022-12-15 [1] CRAN (R 4.2.2)
signal 0.7-7 2021-05-25 [1] CRAN (R 4.2.0)
stringi 1.7.12 2023-01-11 [1] CRAN (R 4.2.2)
stringr 1.5.0 2022-12-02 [1] CRAN (R 4.2.2)
urlchecker 1.0.1 2021-11-30 [1] CRAN (R 4.2.2)
usethis 2.1.6 2022-05-25 [1] CRAN (R 4.2.2)
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xtable 1.8-4 2019-04-21 [1] CRAN (R 4.2.2)