location_getSingleElevation_USGS {MazamaLocationUtils}

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://epqs.nationalmap.gov/v1/docs

Examples

library(MazamaLocationUtils)

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

  # Wenatchee
  longitude <- -120.325278
  latitude <- 47.423333

  location_getSingleElevation_USGS(longitude, latitude)
  
}, silent = FALSE)