geoconvert: Convert latitude and longitude

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

Description

Convert between different representations of latitude and longitude, namely degrees-minutes-decimal minutes and decimal degrees.

Usage

geoconvert(data, inverse = F, col.names = c("lat", "lon"))

Arguments

data	Dataframe with coordinates in two columns
inverse	Which conversion should be undertaken, default from degrees-minutes-decimal minutes (DDMMmm) to decimal degrees (DD.dd)
col.names	Colnames in data with coordinates to convert, default lat, lon

Value

Returns data with converted values in the coordinate columns.

Note

Functions calling geoconvert do so in a branch that is probably rarely used. Implement conversion from other representations of lat and lon in future?

See Also

Called by a number of functions, i.e. d2mr, mr2d, geogrid, geoidentify, geolines, geopoints, geopolygon and geotext, perhaps unncessarily in some. Wraps around functions geoconvert.1 and geoconvert.2, depending on which conversion to undertake.

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