invmerc: Inverse Mercator Projection

In geo: Draw and Annotate Maps, Especially Charts of the North Atlantic

Description

Inverse Mercator Projection.

Usage

invmerc(x, y, scale = "km", b0 = 65)

Arguments

x,y	The input data to be inversely projected as two vectors
scale	Scale of the input data, "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.

Note

Needs elaboration and perhaps documenting with mercator in the same doc-file.

See Also

Called by invProj.

geo documentation built on May 29, 2017, 5:36 p.m.