An R package for accessing elevation data from various sources
The elevatr package currently provides access to
elevation data from AWS Open Data Terrain Tiles
and the Open Topography Global datasets API
for raster digital elevation models. For point elevation data,the USGS Elevation Point Query
Service) may be used or the point elevations may be derived from the
AWS Tiles. Additional elevation data sources may be added as they come
available.
Currently this package includes just two primary functions to access elevation web services:
get_elev_point(): Get point elevations using the USGS
Elevation Point Query Service (for the US Only) or using the AWS Terrian
Tiles (global). This will accept a data frame of x (long) and y (lat), a
SpatialPoints/SpatialPointsDataFame, or a Simple Features object as
input. A SpatialPointsDataFrame or Simple Features object is returned,
depending on the class of the input locations.get_elev_raster(): Get elevation data as a raster
(e.g. a Digital Elevation Model) from the AWS Open Data Terrain Tiles.
Other sources may be added later. This will accept a data frame of of x
(long) and y (lat) or any sp or raster object
as input and will return a raster object of the elevation
tiles that cover the bounding box of the input spatial data.Version 0.4.1 of this package is currently available from CRAN and may be installed by:
install.packages("elevatr")The development version (this repo) may installed with
devtools:
library(devtools)
install_github("jhollist/elevatr")As elevatr is getting more widely used, there have been
some great contributions, use cases, and additional packages that have
come from the user community. If you have one you’d like to share, let
me know and I will gladly add it. Here are some of the ones that I have
seen. Thank you all!
rayshader and elevatr
cheatsheetrayvista package uses rayshader,
maptiles, and elevatr to create some cool
visualizationsMapzen terrain tiles (which supply the AWS source) contain 3DEP, SRTM, and GMTED2010 content courtesy of the U.S. Geological Survey and ETOPO1 content courtesy of U.S. National Oceanic and Atmospheric Administration. The Open Topography API provide access to the SRTM and the ALOS World 3D datasets. See https://opentopography.org/ for details.
The source code for this repository is maintained at https://github.com/jhollist/elevatr which is also mirrored at https://github.com/usepa/elevatr
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