get_cloudmademap: Get a CloudMade map.

Description

get_cloudmademap() accesses a tile server for Stamen Maps and downloads/stitches map tiles/formats a map image. This function requires an api key which can be obtained for free from http://cloudmade.com/user/show, now defunct. Thousands of maptypes ("styles"), including create-your-own options, are available from http://maps.cloudmade.com/editor (defunct).

Usage

get_cloudmademap(
  bbox = c(left = -95.80204, bottom = 29.38048, right = -94.92313, top = 30.14344),
  zoom = 10,
  api_key,
  maptype = 1,
  highres = TRUE,
  crop = TRUE,
  messaging = FALSE,
  urlonly = FALSE,
  filename = NULL,
  color = c("color", "bw"),
  ...
)

Value

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

Arguments

bbox: a bounding box in the format c(lowerleftlon, lowerleftlat, upperrightlon, upperrightlat).
zoom: a zoom level
api_key: character string containing cloud made api key, see details
maptype: an integer of what cloud made calls style, see details
highres: double resolution
crop: crop raw map tiles to specified bounding box
messaging: turn messaging on/off
urlonly: return url only
filename: destination file for download (file extension added according to format). Default NULL means a random tempfile().
color: color or black-and-white
...: ...

Author

David Kahle david@kahle.io

Examples

Run this code



#api_key <- ''
#api_key <- 'b23b0358e87c4ff99f81029eda25c903'

#map <- get_cloudmademap(api_key = api_key)
#ggmap(map)

#map <- get_cloudmademap(maptype = 997, api_key = api_key)
#ggmap(map)