geocode: Georeferencing with Google

In mapmisc: Utilities for Producing Maps

Georeferencing with Google

Description

Uses the dismo package to geocode with Google

Usage

	geocode(x, extent,
	  lang = gsub("(_|[:]).*", "", Sys.getenv('LANGUAGE')))
	

Arguments

x	Vector of character strings to search for
extent	Currently unused. an Extent object, or any object from which an Extent can be obtained.
lang	Language for place names in result.

Details

If the option getOption('mapmiscCachePath') is set, it will be used to specify the folder to save downloaded data. getOption('mapmiscVerbose') for printing progress.

Data are retreived from Openstreetmap.org, see https://wiki.openstreetmap.org/wiki/Nominatim.

Value

A SpatialPointsDataFrame with coordinates in the projection of extent if possible, or long-lat otherwise.

Examples

cities=try(geocode('Ulan batar'), silent=TRUE)
data('worldMap')
worldMap = terra::unwrap(worldMap)

if(!all(class(cities) == 'try-error') ) { 
citiesT = project(cities, crs(worldMap))
oldpar=map.new(citiesT, buffer=5000*1000)
plot(worldMap, add=TRUE)
points(citiesT, col='red')
suppressWarnings(text(citiesT, labels=citiesT$name, col='red',pos=4))
## Not run: 
	# uses unicode symbols
	text(citiesT, labels=citiesT$display_name, col='red',pos=1))

## End(Not run)
par(oldpar)
}

mapmisc documentation built on Nov. 21, 2023, 5:09 p.m.