| mapLongitudeLatitudeXY {oce} | R Documentation |
Find (x, y) values corresponding to (longitude, latitude) values, using the present projection.
mapLongitudeLatitudeXY(longitude, latitude)
longitude |
vector of the longitudes of points, or an object from which
both latitude and longitude can be inferred (e.g. a coastline file, or the
return value from |
latitude |
vector of latitudes of points, needed only if they cannot be inferred from the first argument. |
This is mainly a wrapper around lonlat2map.
A list containing x and y.
Dan Kelley
A map must first have been created with mapPlot.
Other functions related to maps: lonlat2map,
lonlat2utm, map2lonlat,
mapArrows, mapAxis,
mapContour,
mapDirectionField, mapGrid,
mapImage, mapLines,
mapLocator, mapPlot,
mapPoints, mapPolygon,
mapScalebar, mapText,
mapTissot, oceCRS,
shiftLongitude, usrLonLat,
utm2lonlat
## Not run: library(oce) data(coastlineWorld) par(mfrow=c(2, 1), mar=rep(2, 4)) mapPlot(coastlineWorld, projection="+proj=moll") # sets a projection xy <- mapLongitudeLatitudeXY(coastlineWorld) plot(xy, type='l', asp=1) ## End(Not run)