latlong2km: Convert latitude and longitude to Northings and Eastings

Description Usage Arguments Details Value Author(s)

View source: R/latlong2km.R

Description

Convert longitude and latitude co-ordinates to kilometres west-east and south-north from axes through (lon0,lat0) using the "spherical law of cosines".

Usage

1
latlong2km(lon, lat, lon0 = sum(range(lon))/2, lat0 = sum(range(lat))/2)

Arguments

lon

longitude

lat

latitude

lon0

longitude reference point (defaults to mean longitude)

lat0

latitude reference point (defaults to mean latitude)

Details

WARNING: This is an approximate procedure for converting between latitude/ longitude and Northing/Easting. Consider using projection conversions available in packages sp and rgdal for better results.

Value

list with elements km.e and km.n.

Author(s)

Simon N. Wood


dsm documentation built on July 1, 2018, 9:06 a.m.