![]() ![]() For these examples, we canĬreate a dataset to use. Global and also include estimates of depth for oceans.Įxample usage of each is included below. ![]() SpatialPoints, SpatialPointsDataFrame, or a two-column data frame withĬolumn one containing the x (e.g. longitude) coordinates and the secondĬolumn containing the y coordinates (e.g. latitude). Usage of get_elev_point() requires an input Using get_elev_point() to Access The USGS Elevation ![]() Currently, elevatr supports the SRTMG元, SRTMGL1, AW3D30, Raster elevation data (i.e., Digital Elevation Models orĭEMs) are available from the AWS Terrain Tiles or from the Web Services (AWS) Terrain Tiles from which point elevations areĮxtracted. For point elevation data it uses USGSĮlevation Point Query Service (United States only) as well as the Amazon Provides a bit of detail on the source data it accesses.Īs of version 0.4.2, there are several endpoints thatĮlevatr accesses. This introductory vignette providesĭetails on how to use elevatr to access elevation data and TheĮlevatr package was written to standarize access toĮlevation data from web APIs. This is no longer required as a variety of APIs nowĮxist that provide programmatic access to elevation data. GainingĪccess to these data in R has not had a single interface, is madeĪvailable through functions across many packages, or requires localĪccess to the data. Elevation data is used for a wide array of applications, including,įor example, visualization, hydrology, and ecological modelling. ![]()
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