Package: traveltime 1.0.0

Gerry Ryan

traveltime: Calculate Travel Times Over Space

Calculate travel time across a landscape from a set of user-specified locations, over a friction surface describing the time taken to cross each cell. Implements the least-cost travel time approach of Weiss et al. (2018) <doi:10.1038/nature25181> and Weiss et al. (2020) <doi:10.1038/s41591-020-1059-1>, and provides convenient access to their global walking and motorised friction surfaces via the 'malariaAtlas' package. Travel times are computed with 'terra'. See Ryan et al. (2025) <doi:10.12688/gatesopenres.16356.1> for further details.

Authors:Gerry Ryan [aut, cre], Daniel Weiss [aut], Nicholas Tierney [ctb]

traveltime_1.0.0.tar.gz
traveltime_1.0.0.zip(r-4.7-any)traveltime_1.0.0.zip(r-4.6-any)
traveltime_1.0.0.tar.gz(r-4.7-any)traveltime_1.0.0.tar.gz(r-4.6-any)
traveltime_1.0.0.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
traveltime/json (API)

# Install 'traveltime' in R:

install.packages('traveltime', repos = c('https://cran.r-universe.dev', 'https://cloud.r-project.org'))

Bug tracker:https://github.com/idem-lab/traveltime/issues

Pkgdown/docs site:https://idem-lab.github.io

Datasets:

stations - Singapore MRT and LRT data

On CRAN:

3.46 score 58 scripts 5 exports 79 dependencies

Last updated from:a9e8f75ca5. Checks:6 OK. Indexed: yes.

Target	Result	Time
linux-devel	OK	146
source / vignettes	OK	221
linux-release	OK	184
windows-devel	OK	90
windows-release	OK	108
wasm-release	OK	154

Exports:calculate_travel_time ext_from_terra ext_matrix ext_vect_to_matrix get_friction_surface

Dependencies:askpass bit bit64 class classInt cli clipr codetools cpp11 crayon curl data.table DBI digest dplyr e1071 farver filelock future future.apply generics geometa ggnewscale ggplot2 globals glue gridExtra gtable hms httr isoband jsonlite KernSmooth keyring labeling lifecycle listenv lubridate magrittr malariaAtlas mime openssl ows4R parallelly pillar pkgconfig prettyunits progress proxy purrr R6 RColorBrewer Rcpp readr rlang s2 S7 scales sf stringi stringr sys terra tibble tidyr tidyselect tidyterra timechange tzdb units utf8 vctrs viridisLite vroom withr wk XML xml2 yaml

A practical example: walking from public transport in Singapore

Rendered fromsingapore.Rmdusingknitr::rmarkdown

Last update: 2026-10-31
Started: 2026-10-31

Help page	Topics
Calculate travel time	calculate_travel_time
Extent from 'SpatRaster' or 'SpatVector'	ext_from_terra
Convert extent to matrix	ext_matrix
Extent vector to matrix	ext_vect_to_matrix
Get friction surface	get_friction_surface
Singapore MRT and LRT data	stations

Package: traveltime 1.0.0

traveltime: Calculate Travel Times Over Space

Citation

Readme and manuals

Help Manual

Usage by other packages (reverse dependencies)