plotmap function

easy to use wrapper function

note the similarity in name to PBSmapping::plotMap This function is the workhorse of the package RgoogleMaps. It overlays plot on background image of map tile.

plotmap(lat, lon, map, zoom = NULL, API = c("google", 
    "OSM", "bing", "google2")[1], maptype = c("roadmap", 
    "mobile", "satellite", "terrain", "hybrid", "mapmaker-roadmap", 
    "mapmaker-hybrid")[2], destfile, data, alpha = 1, 
    col = 1, apiKey = NULL, verbose = 0, ...)

Arguments

• lat: latitude values to be overlaid OR string to be geocoded OR named vector (lat,lon)!
• lon: longitude values to be overlaid
• map: optional map object
• zoom: Google maps zoom level
• API: choice of map tile API
• maptype: defines the type of map to construct. There are several possible maptype values, including satellite, terrain, hybrid, and mobile.
• destfile: File to save the map image to
• data: data to look up variables in
• alpha: opacity
• col: plot color
• apiKey: optional API key (allows for higher rate of downloads for Google); mandatory for Bing maps
• verbose: level of verbosity
• ...: further arguments to be passed to PlotOnStaticMap

Author(s)

Markus Loecher

Examples

if (0){
  #####################Google maps#############################
  mapBG1 = plotmap("Brandenburg Gate, Berlin", zoom = 15)

  #####################bing maps#############################
  
  #for bing maps you will need your own API key, 
  #sign up at https://msdn.microsoft.com/en-us/library/ff428642.aspx
  apiKey = scan("bingAPIkey.txt",what="")
  mapBG2 = plotmap("Brandenburg Gate, Berlin", zoom = 15, API = "bing", apiKey=apiKey)
  
  latlon <- cbind.data.frame(lat = c(38.898648,38.889112, 38.880940), 
                              lon = c(-77.037692, -77.050273, -77.03660));
  
  
  map3 = plotmap(lat = latlon$lat, lon = latlon$lon, API = "bing", apiKey=apiKey,
                 col = "purple", pch="X",cex=1.5)
  
  
  #####################OSM maps#############################
  map4 = plotmap(lat = latlon$lat, lon = latlon$lon, API = "OSM", zoom=15,
                 col = "purple", pch="X",cex=1.5)
}