oce (version 0.9-18)

mapLines: Plot lines on a existing map

Description

Plot lines on an existing map

Usage

mapLines(longitude, latitude, greatCircle=FALSE, ...)

Arguments

longitude

longitudes of points to be plotted, or an object from which longitude and latitude can be inferred (e.g. a coastline file, or the return value from mapLocator), in which case the

latitude

latitudes of points to be plotted

greatCircle

logical indicating whether to render line segments as great circles. (Ignored at present.)

...

optional arguments passed to lines.

Details

Adds lines to an existing map, by analogy to lines.

See Also

See mapPlot for general information on plotting maps, including other functions.

Examples

library(oce)
data(coastlineWorld)
mapPlot(coastlineWorld, type='l',
        longitudelim=c(-80,10), latitudelim=c(0,120),
        projection="+proj=ortho +lon_0=-40")
lon <- c(-63.5744, 0.1062)             # Halifax CA to London UK
lat <- c(44.6479, 51.5171)
mapPoints(lon, lat, col='red')
mapLines(lon, lat, col='red')