Access Elevation Data from Various APIs
Assumes geographic projection sf bbox to poly
function to clip the DEM
Access elevation data from the web
Estimate download size of DEMs
Get point elevation data from the AWS Terrain Tiles
Get a digital elevation model from the AWS Terrain Tiles
Get Point Elevation
Get Raster Elevation
Get point elevation data from the USGS Elevation Point Query Service
Get a digital elevation model from the Open Topography SRTM Version 3
OpenTopo Key
function to get a data.frame of all xyz tiles to download
function to convert lat long to xyz tile with decimals rounding to til...
function to check input type and projection. All input types convert t...
Merge Rasters
function to project bounding box and if needed expand it
Store OpenTopography Key
Several web services are available that provide access to elevation data. This package provides access to many of those services and returns elevation data either as an 'sf' simple features object from point elevation services or as a 'raster' object from raster elevation services. In future versions, 'elevatr' will drop support for 'raster' and will instead return 'terra' objects. Currently, the package supports access to the Amazon Web Services Terrain Tiles <https://registry.opendata.aws/terrain-tiles/>, the Open Topography Global Datasets API <https://opentopography.org/developers/>, and the USGS Elevation Point Query Service <https://apps.nationalmap.gov/epqs/>.