mapText: Add Text to a Map

In oce: Analysis of Oceanographic Data

Add Text to a Map

Description

Plot text on an existing map, by analogy to text().

Usage

mapText(longitude, latitude, labels, ...)

Arguments

longitude	numeric vector of longitudes of text to be plotted.
latitude	numeric vector of latitudes of text to be plotted.
labels	vector of labels of text to be plotted.
...	optional arguments passed to text(), e.g. adj, pos, etc.

Author(s)

Dan Kelley

See Also

A map must first have been created with mapPlot().

Other functions related to maps: formatPosition(), lonlat2map(), lonlat2utm(), map2lonlat(), mapArrows(), mapAxis(), mapContour(), mapCoordinateSystem(), mapDirectionField(), mapGrid(), mapImage(), mapLines(), mapLocator(), mapLongitudeLatitudeXY(), mapPlot(), mapPoints(), mapPolygon(), mapScalebar(), mapTissot(), oceCRS(), oceProject(), shiftLongitude(), usrLonLat(), utm2lonlat()

Examples

library(oce)
data(coastlineWorld)
longitude <- coastlineWorld[["longitude"]]
latitude <- coastlineWorld[["latitude"]]
mapPlot(longitude, latitude,
    type = "l", grid = 5,
    longitudelim = c(-70, -50), latitudelim = c(45, 50),
    projection = "+proj=merc"
)
lon <- -63.5744 # Halifax
lat <- 44.6479
mapPoints(lon, lat, pch = 20, col = "red")
mapText(lon, lat, "Halifax", col = "red", pos = 1, offset = 1)

oce documentation built on Sept. 11, 2024, 7:09 p.m.