R: computes the coordinate transformation from lat/lon to map...

LatLon2XY {RgoogleMaps} | R Documentation

## computes the coordinate transformation from lat/lon to map tile coordinates

### Description

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.

### Usage

    LatLon2XY(lat, lon, zoom)

### Arguments

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

### Value

A list with values

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

### Note

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

### Author(s)

Markus Loecher

### Examples

    LatLon2XY(38.45, -122.375, 11)

[Package RgoogleMaps version 1.4.1 Index]