UVdose (version 0.1.1)

latitude: Un-project Transverse Mercator Eastings and Northings back to latitude and longitude.

Description

These functions convert OSGB (Ordnance Survey of Great Britain) coordinates, i.e. Transverse Mercator easting and northing coordinates, for example, as provided by the UK Biobank. latitude returns latitude values and longitude returns longitude values.

Usage

latitude(data, easting, northing)
longitude(data, easting, northing)

Value

A numeric vector of latitude or longitude values.

Arguments

data

a data frame containing OSGB coordinates

easting

a numeric vector of easting coordinates

northing

a numeric vector of northing coordinates

Examples

osgb <- data.frame(east = c(393000, 461000, 438000), north = c(287000, 223000, 565000))
latitude(osgb, east, north)
longitude(osgb, east, north)