gridCoords: Get the x, y coordinates from a grid reference

In gcfrench/store: Store commonly used functions and lookups

Get the x, y coordinates from a grid reference

Description

Given an OSGB or OSNI grid reference string, get the x, y coordinates of the OSGB or OSNI grid for the bottom, left-hand corner of the grid square. The units parameter controls the units (metres m or kilometres km) in which the coordinates should be returned.

Usage

gridCoords(x, ...)

Arguments

grid_reference	A Great British or Irish grid reference character string with class gridref.
units	Should the returned coordinates be in metres (m) or kilometres (km).

Value

A list of class gridref with the following contents:

• grid_reference: the original grid reference.

• system: the grid reference projection system, either "OSGB" or "OSNI".

• x: the easting coordinate in requested units.

• y: the northing coordinate in requested units.

• units: the requested units either metres (m) or kilometres (km).

• precision: the precision of the original grid reference in metres

Author(s)

Stuart Ball.

See Also

Function taken from archived rnbn package.

gcfrench/store documentation built on May 17, 2024, 5:52 p.m.