Slippy Map Tile Tools
bbox_tile_extent
bbox_tile_query
tile_bbox
tile_grid_bboxes
tilenum_to_lonlat
within_mercator_extent
raster_to_png
bbox_to_tile_grid
compose_tile_grid
Transform between spherical Mercator and longitude/latitude
lonlat_to_tilenum
merc_truncate
Provides functions for performing common tasks when working with slippy map tile service APIs e.g. Google maps, Open Street Map, Mapbox, Stamen, among others. Functionality includes converting from latitude and longitude to tile numbers, determining tile bounding boxes, and compositing tiles to a georeferenced raster image.
Useful links