knitr, magrittr, rgdal, rgeos, rmarkdown, testthat (>=
2.1.0), covr

knitr, magrittr, rgdal, rgeos, rmarkdown, testthat (>=
2.1.0), covr, units

Provides an interface to the 'Mapzen' API for geographic search
and geocoding, isochrone calculation, and vector data to draw map tiles.
See <https://mapzen.com/documentation/> for more information.
tibble, httr, jsonlite, maps, dplyr, assertthat, geojsonio,
tidyr, purrr, sp, rgdal, digest, maptools, sf

Client for 'Mapzen' and Related Map APIs
c(
person("Tarak", "Shah", email = "tarak_shah@berkeley.edu", role = c("aut", "cre")),
person("Daniel","Possenriede", role = "ctb"))
Provides an interface to 'Mapzen'-based APIs (including
geocode.earth, Nextzen, and NYC GeoSearch) for geographic search
and geocoding, isochrone calculation, and vector data to draw map tiles.
See <https://mapzen.com/documentation/> for more information. The original
Mapzen has gone out of business, but 'rmapzen' can be set up to work with
any provider who implements the Mapzen API.
Tarak Shah [aut, cre],
Daniel Possenriede [ctb]

tibble, httr, jsonlite, maps, dplyr, assertthat, geojsonio,
tidyr, purrr, sp, rgdal, digest, maptools, sf (>= 0.6-2)

c(
person("Tarak", "Shah", email = "tarak.shah@gmail.com", role = c("aut", "cre")),
person("Daniel","Possenriede", role = "ctb"))

tibble, httr, jsonlite, maps, dplyr, assertthat, geojsonio,
tidyr, purrr, sp, rgdal, digest, maptools, sf (>= 0.6-2), utils

Provides an interface to 'Mapzen'-based APIs (including
geocode.earth, Nextzen, and NYC GeoSearch) for geographic search
and geocoding, isochrone calculation, and vector data to draw map tiles.
See <https://www.mapzen.com/documentation/> for more information. The original
Mapzen has gone out of business, but 'rmapzen' can be set up to work with
any provider who implements the Mapzen API.
tibble, httr, jsonlite, maps, dplyr, assertthat, geojsonio,
tidyr, purrr, sp, rgdal, digest, maptools, sf (>= 1.0.0), utils

Calculate 3D Contour Meshes Using the Marching Cubes Algorithm
S. H. Wilks <sw463@cam.ac.uk> [aut, cre],
Thomas Lewiner <lewiner@gmail.com> [aut]
A port of the C++ routine for applying the marching cubes algorithm written by
Thomas Lewiner et al. (2012) <doi:10.1080/10867651.2003.10487582> into an R package.
The package supplies the contour3d() function, which takes a 3-dimensional array of voxel
data and calculates the vertices, vertex normals, and faces for a 3d mesh representing
the contour(s) at a given level.