LatLon2XY: computes the coordinate transformation from lat/lon to map...
In RgoogleMaps: Overlays on Static Maps

The function LatLon2XY(lat,lon,zoom) computes the coordinate transformation from lat/lon to map tile coordinates given a zoom level.

It returns the tile coordinates as well as the pixel coordinates within the Tile itself.

1	LatLon2XY(lat, lon, zoom)

`lat`	latitude values to transform
`lon`	longitude values to transform
`zoom`	zoom level.lat,lon,zoom

A list with values

`Tile`	integer numbers specifying the tile
`Coords`	pixel coordinate within the Tile

The fractional part times 256 is the pixel coordinate within the Tile itself.

Markus Loecher

1	LatLon2XY(38.45, -122.375, 11)

RgoogleMaps documentation built on May 2, 2019, 5:03 p.m.

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