\name{osmtile_bbox}

\alias{osmtile_bbox}

\title{compute the bounding box of an OpenStreetmap tile}

\description{inspired by \code{osmtile} from the package \code{OpenStreetmap}

returns the Mercator projection bounding box}

\usage{osmtile_bbox(x = 61, y = 41, zoom = 7, minim = -20037508)}

\arguments{

  \item{x}{x tile coordinate}

  \item{y}{x tile coordinate}

  \item{zoom}{zoom level}

  \item{minim}{parameter for OSM projection}

}



\value{bounding box, Mercator projection }



\author{Markus Loecher}











