slopes: Calculate Slopes of Roads, Rivers and Trajectories

Calculates the slope (longitudinal gradient or steepness) of linear geographic features such as roads (for more details, see Ariza-López et al. (2019) <doi:10.1038/s41597-019-0147-x>) and rivers (for more details, see Cohen et al. (2018) <doi:10.1016/j.jhydrol.2018.06.066>). It can use local Digital Elevation Model (DEM) data or download DEM data via the 'ceramic' package. The package also provides functions to add elevation data to linestrings and visualize elevation profiles.

Version:	1.0.1
Depends:	R (≥ 2.10)
Imports:	sf, raster, methods, pbapply, geodist, colorspace
Suggests:	terra, knitr, rmarkdown, ceramic, bookdown, covr, testthat, osmextract, stplanr, dplyr, tmap, leaflet, bench, rlang
Published:	2025-06-23
DOI:	10.32614/CRAN.package.slopes
Author:	Robin Lovelace [aut, cre, cph], Rosa Félix [aut], Joey Talbot [aut], Gonçalo Matos [aut], Dan Olner [rev] (Dan reviewed the package for rOpenSci, see https://github.com/ropensci/software-review/issues/420#issuecomment-857662657), Andy Teucher [rev] (Andy reviewed the package for rOpenSci, see https://github.com/ropensci/software-review/issues/420#issuecomment-858231647)
Maintainer:	Robin Lovelace <rob00x at gmail.com>
BugReports:	https://github.com/ropensci/slopes/issues
License:	GPL-3
URL:	https://github.com/ropensci/slopes/, https://docs.ropensci.org/slopes/
NeedsCompilation:	no
Materials:	README NEWS
CRAN checks:	slopes results

Documentation:

Reference manual:	slopes.pdf
Vignettes:	Benchmarking slopes calculation (source, R code) An introduction to slopes (source, R code) Example: gradients of a road network for a given city (source, R code) Get started (source, R code) Verification of slopes (source, R code)

Downloads:

Package source:	slopes_1.0.1.tar.gz
Windows binaries:	r-devel: not available, r-release: not available, r-oldrel: not available
macOS binaries:	r-release (arm64): slopes_1.0.1.tgz, r-oldrel (arm64): slopes_1.0.1.tgz, r-release (x86_64): slopes_1.0.1.tgz, r-oldrel (x86_64): slopes_1.0.1.tgz

Linking:

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