TeachingDemos (version 2.7)

project.Map: Apply projections to Map objects (from maptools package)

Description

This function is depricated, use project from the rgdal package instead. Apply the mapproject function from the mapproj library to Map objects from the maptools library.

Usage

project.Map(Map, projection = "", parameters = NULL, orientation = c(90, 0, 0))

Arguments

Map

A Map object.

projection

See mapproject

parameters

See mapproject

orientation

See mapproject

Value

• An object of class Map with the coordinates transformed.

Details

This function takes a Map object and applies mapproject from the mapproject library to it.

See Also

mapproject from the mapproj library.

Examples

library(mapproj)
# assumes that the time zone shape files have been downloaded
# from: http://openmap.bbn.com/data/shape/timezone/

tz <- maptools:::read.shape('WRLDTZA')
plot(Map2poly(project.Map(tz,'bonne',param=45)))

plot(Map2poly(project.Map(tz,'bonne',param=45)),
  col=rainbow(48)[tz$att.data$OFFSET])

plot(Map2poly(project.Map(tz,'albers',param=c(30,40))))