get_opentopo

Either a <code>data.frame</code> of x (long) and y (lat), an 
<code>sp</code>, an <code>sf</code>, or <code>raster</code> object as input.

locations

A numeric value of a distance, in map units, used to expand the
bounding box that is used to fetch the SRTM data.

expand

Extra configuration parameters to be passed to httr::GET. Common 
usage is to adjust timeout. This is done as 
<code>config=timeout(x)</code> where <code>x</code> is a numeric value in 
seconds. Multiple configuration functions may be passed as a 
vector.

This function uses the Open Topography SRTM Version 3 files.

internal

Several web services are available that provide access to elevation
data. This package provides access to several of those services and
returns elevation data either as a SpatialPointsDataFrame from
point elevation services or as a raster object from raster
elevation services. 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://nationalmap.gov/epqs/>.

Jeffrey W Hollister

get_opentopo: Get a digital elevation model from the Open Topography SRTM Version 3

Description

Usage

Arguments