Ggmap from sf to data.frame — ps_sf_ggmap

A wrapper function to quickly get plottable ggmap basemap clipped to padded bbox of sf object.

Usage

ps_sf_ggmap_df(x, pad, source, maptype)

x: A sf object
pad: A numeric vector indicating amount in metres to pad bbox. If vector of length 1, that amount is added to all sides; if vector of length 4 amount is added to left, top, right and bottom, respectively.
source: Google Maps ("google"), OpenStreetMap ("osm"), Stamen Maps ("stamen"), or CloudMade maps ("cloudmade")
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).

A data.frame object which can be plotted using: ggplot2::geom_point(data = x, aes(x = x, y = y, col = rgb(layer.1/255, layer.2/255, layer.3/255))).