View source: R/latlong_to_qk_functions.R
latlong_to_quadkey | R Documentation |
Converts a point from latitude/longitude WGS-84 coordinates (in degrees) into a Quadkey at a specified zoom level. For further information, refer to the Microsoft Bing Maps Tile System documentation.
latlong_to_quadkey(lat, lon, zoom)
lat |
Latitude of the point, in degrees. |
lon |
Longitude of the point, in degrees. |
zoom |
Zoom or level of detail, from 1 (lowest detail) to 23 (highest detail). |
Converting latitude/longitude coordinates into a QuadKey and then back to latitude/longitude won't yield identical values, unless the initial latitude/longitude coordinates correspond to the upper-left Quadkey's pixel and tile XY coordinates at the same zoom level.
Understanding this distinction is crucial for the accurate use of these functions in coordinate conversions.
For a detailed explanation on how to use this
and other similar quadkeyr
functions,
read the the vignette:
https://docs.ropensci.org/quadkeyr/articles/quadkey_to_sf_conversion.html
A dataframe with latitude (lat), longitude (lon), zoom level (zoom) and the QuadKey as a string (quadkey).
https://learn.microsoft.com/en-us/bingmaps/articles/bing-maps-tile-system
latlong_to_quadkey(
lat = 35.63051,
lon = 139.69116,
zoom = 20
)
latlong_to_quadkey(
lat = c(-4, -25.33, -25.66),
lon = c(-53, -60.33, -70.66),
zoom = 4
)
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