oce (version 0.9-5)

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

latitude

latitudes of points to be plotted

greatCircle

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

...

optional arguments passed to lines.

Bugs

This should use approx to fill in multiple segments within the line, so that e.g. great circle lines will be curved.

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)
longitude <- coastlineWorld[['longitude']]
latitude <- coastlineWorld[['latitude']]
mapPlot(longitude, latitude, type='l',
        longitudelim=c(-80,10), latitudelim=c(0,120),
        projection="orthographic", orientation=c(45,-100,0))
lon <- c(-63.5744, 0.1062)             # Halifax CA to London UK
lat <- c(44.6479, 51.5171)
mapLines(lon, lat, col='red')