zone_from_ll: Find the UTM zone for a given location
In bsmity13/ADePTR: Acoustic Detection Processing and Visualization Tool in R

Description Usage Arguments Details Value References Examples

This function returns the UTM zone for a given set of latitude/longitude.

1	zone_from_ll(lon, lat)

`lon`	A numeric vector of longitudes
`lat`	A numeric vector of latitudes

This function takes a point and calculates the correct UTM zone in which that point falls. It was developed based on answers to a Stack Overflow post (see below).

Returns an integer vector of UTM zones the same length as the inputs lon and lat

Based on the answers to the Stack Overflow post found here:
https://stackoverflow.com/questions/9186496/determining-utm-zone-to-convert-from-longitude-latitude

#UTM grid for Ft. Lauderdale, FL, USA
zone_from_ll(lon = -80.15, lat = 26.133333)

#UTM grid for Rome, Italy; Paris, France; London, UK
ll_df <- data.frame(city = c("Rome", "Paris", "London"),
                    lon = c(12.5, 2.3508, -0.1275),
                    lat = c(41.9, 48.8567, 51.507222))
zone_from_ll(lon = ll_df$lon, lat = ll_df$lat)