pixelXY_to_latlong: Convert pixel XY coordinatess into lat/long coordinates.

In quadkeyr: Generate Raster Images from QuadKey-Identified Datasets

Convert pixel XY coordinatess into lat/long coordinates.

Description

Converts a pixel from pixel XY coordinates at a specified zoom level into latitude/longitude WGS-84 coordinates (in degrees). For further information, refer to the Microsoft Bing Maps Tile System documentation.

Usage

pixelXY_to_latlong(pixelX, pixelY, zoom)

Arguments

pixelX	X coordinate of the point, in pixels.
pixelY	Y coordinates of the point, in pixels.
zoom	Zoom or level of detail, from 1 (lowest detail) to 23 (highest detail).

Details

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

Value

A list with the longitude and latitude.

References

https://learn.microsoft.com/en-us/bingmaps/articles/bing-maps-tile-system

Examples

pixelXY_to_latlong(
  pixelX = 768,
  pixelY = 1280,
  zoom = 3
)

quadkeyr documentation built on April 3, 2025, 8:52 p.m.