geo (version 1.4-3)

mercator: Mercator projection

Description

Mercator projection.

Usage

mercator(lat, lon, scale = "km", b0 = 65)

Arguments

lat,lon

Coordinates as latitude and longitude vectors

scale

Scale of the output, "km" default, all other values imply nautical miles.

b0

Latitude defining the projection.

Value

List of components:

lat, lon

Coordinates in latitude and longitude

x, y

Input coordinates (projected)

scale

Scale

projection

Projection (stated redunantly)

b0, L0

Defining lat and a null value ???

is returned invisibly.

See Also

Called by geoarea, gridaxes and Proj.