plot_tiles: Plot slippy map tiles

In ceramic: Download Online Imagery Tiles

Plot slippy map tiles

Description

Create a new plot of tile rectangles, or add to an existing plot.

Usage

plot_tiles(
  x,
  ...,
  add = FALSE,
  label = TRUE,
  cex = 0.6,
  add_coast = TRUE,
  include_zoom = TRUE
)

tiles_to_polygon(x)

Arguments

x	tiles as create by ceramic_tiles()
...	arguments passed to graphics::rect()
add	add to an existing plot?
label	include text label?
cex	relative size of text label if drawn (see text())
add_coast	include a basic coastline on the plot?
include_zoom	include zoom level with text label if drawn?

Details

The extent ('xmin', 'xmax', 'ymin', 'ymax') is used directly to draw the tiles so must be in the native Mercator coordinate system used by most tile servers.

Value

plot_tiles() is called for its side-effect, a plot, and returns NULL invisibly. tiles_to_polygon returns a wk rct vector

Examples

if (!is.null(get_api_key())) {
  get_tiles_zoom(zoom = 1)
  tiles <- ceramic_tiles(zoom = 1)
  plot_tiles(tiles)
}

ceramic documentation built on April 22, 2023, 1:12 a.m.