lon2utmZone: Determine UTM Zone from Longitude

In JVAdams/EchoNet2Fish: Estimate Fish Abundance from Acoustic Echoes and Net Catch

Description

Determine the Universal Transverse Mercator zone that contains the given longitude coordinates.

Usage

lon2utmZone(lon, lat = NULL)

Arguments

lon	Numeric vector of longitudes.
lat	Numeric vector of latitudes, same length as lon, default NULL.

Value

A numeric vector giving the UTM zones (integers) containing the lon. If lat is not NULL, then zones are corrected to account for the special cases of Svalbard and parts of Norway.

References

Based on a function posted by Josh O'Brien on 8 Feb 2012 on stackoverflow [link]. and code for exceptions posted by wittrup on 13 Sep 2013 on stackoverflow [link].

Examples

mylon <- c(-82.27, NA, -122.44, 21.97, 21.97)
mylat <- c(44.76, 37.77, 37.77, NA, 78.64)
lon2utmZone(mylon)
lon2utmZone(mylon, mylat)

JVAdams/EchoNet2Fish documentation built on Feb. 15, 2021, 4:27 a.m.