LatLon2XY

zoom

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. 
Thanks to Neil Young (see <url>http://groups.google.com/group/Google-Maps-API/browse_thread/thread/d2103ac29e95696f?hl=en</url>) for providing the formulae used.

This package serves two purposes: (i) Provide a
        comfortable R interface to query the Google server for static
        maps, and (ii) Use the map as a background image to overlay
        plots within R. This requires proper coordinate scaling.

LatLon2XY: computes the coordinate transformation from lat/lon to map tile coordinates

Description

Usage

Arguments

Value

Examples