location_getSingleElevation_USGS: Get elevation data from a USGS web service

In MazamaLocationUtils: Manage Spatial Metadata for Known Locations

Get elevation data from a USGS web service

Description

USGS APIs are used to determine the elevation in meters associated with the longitude and latitude.

Note: The conversion factor for meters to feet is 3.28084.

Usage

location_getSingleElevation_USGS(
  longitude = NULL,
  latitude = NULL,
  verbose = TRUE
)

Arguments

longitude	Single longitude in decimal degrees E.
latitude	Single latitude in decimal degrees N.
verbose	Logical controlling the generation of progress messages.

Value

Numeric elevation value.

References

https://nationalmap.gov/epqs/

Examples

library(MazamaLocationUtils)

# Fail gracefully if any resources are not available
try({

  # Wenatchee
  lon <- -120.325278
  lat <- 47.423333

  location_getSingleElevation_USGS(lon, lat)
  
}, silent = FALSE)

MazamaLocationUtils documentation built on Aug. 25, 2022, 1:07 a.m.