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get_map {ggmap}

Grab a map.
Package: 
ggmap
Version: 
2.6.1

Description

get_map is a smart wrapper that queries the Google Maps, OpenStreetMap, Stamen Maps or Naver Map servers for a map.

Usage

get_map(location = c(lon = -95.3632715, lat = 29.7632836), zoom = "auto",
  scale = "auto", maptype = c("terrain", "terrain-background", "satellite",
  "roadmap", "hybrid", "toner", "watercolor", "terrain-labels", "terrain-lines",
  "toner-2010", "toner-2011", "toner-background", "toner-hybrid",
  "toner-labels", "toner-lines", "toner-lite"), source = c("google", "osm",
  "stamen", "cloudmade"), force = ifelse(source == "google", TRUE, TRUE),
  messaging = FALSE, urlonly = FALSE, filename = "ggmapTemp",
  crop = TRUE, color = c("color", "bw"), language = "en-EN", api_key)

Arguments

location
an address, longitude/latitude pair (in that order), or left/bottom/right/top bounding box
zoom
map zoom, an integer from 3 (continent) to 21 (building), default value 10 (city). openstreetmaps limits a zoom of 18, and the limit on stamen maps depends on the maptype. "auto" automatically determines the zoom for bounding box specifications, and is defaulted to 10 with center/zoom specifications. maps of the whole world currently not supported.
scale
scale argument of get_googlemap or get_openstreetmap
maptype
character string providing map theme. options available are "terrain", "terrain-background", "satellite", "roadmap", and "hybrid" (google maps), "terrain", "watercolor", and "toner" (stamen maps), or a positive integer for cloudmade maps (see ?get_cloudmademap)
source
Google Maps ("google"), OpenStreetMap ("osm"), Stamen Maps ("stamen"), or CloudMade maps ("cloudmade")
force
force new map (don't use archived version)
messaging
turn messaging on/off
urlonly
return url only
filename
destination file for download (file extension added according to format)
crop
(stamen and cloudmade maps) crop tiles to bounding box
color
color ("color") or black-and-white ("bw")
language
language for google maps
api_key
an api key for cloudmade maps

Values

a ggmap object (a classed raster object with a bounding box attribute)

See Also

ggmap, GetMap in package RgoogleMaps

Examples

map <- get_map()
map
str(map)
ggmap(map)
 
 
## Not run:
# not run by check to reduce time; also,
# osm may error due to server overload
 
(map <- get_map(maptype = "roadmap"))
(map <- get_map(source = "osm"))
(map <- get_map(source = "stamen", maptype = "watercolor"))
 
map <- get_map(location = "texas", zoom = 6, source = "stamen")
ggmap(map, fullpage = TRUE)
 
## End(Not run)

Author(s)

David Kahle david.kahle@gmail.com

Documentation reproduced from package ggmap, version 2.6.1. License: GPL-2