SPAG: Indexes of spatial agglomeration

#' Exemplary map for calculating an Index of Spatial agglomeration
#'
#' This object is a \code{SpatialPolygonsDataFrame} obtained via using \code{readOGR} function from rgdal package on a shapefile.
#' The data frame represents a map of Poland divided into voivodeships.
#'
#' @docType data
#' @keywords datasets
#' @name MapPoland
#' @usage MapPoland
#'
#' @format \code{MapPoland} is a \code{SpatialPolygonsDataFrame} object representing a map of Poland.
#'
#' @source \href{http://www.codgik.gov.pl/}{\code{Centralny Osrodek Dokumentacji Geodezyjnej i Kartograficznej}}
#' @seealso \code{\link{SpatialPolygonsDataFrame}}
#'
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