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#' ISOBoundingPolygon
#'
#' @docType class
#' @importFrom R6 R6Class
#' @export
#' @keywords ISO bounding polygon
#' @return Object of \code{\link{R6Class}} for modelling an ISO BoundingPolygon
#' @format \code{\link{R6Class}} object.
#'
#' @note Experimental
#'
#' @references
#' ISO 19115:2003 - Geographic information -- Metadata
#'
#' @author Emmanuel Blondel <emmanuel.blondel1@@gmail.com>
#'
ISOBoundingPolygon <- R6Class("ISOBoundingPolygon",
inherit = ISOGeographicExtent,
private = list(
xmlElement = "EX_BoundingPolygon",
xmlNamespacePrefix = "GMD"
),
public = list(
#'@field polygon list of polygons
polygon = list(),
#'@description Initializes object
#'@param xml object of class \link{XMLInternalNode-class}
initialize = function(xml = NULL){
super$initialize(xml = xml)
},
#'@description Adds polygon
#'@param x geometry object from \pkg{sf} or object of class inheriting \link{GMLAbstractGeometry}
#'@return \code{TRUE} if added, \code{FALSE} otherwise
addPolygon = function(x){
if(is(x,"sfg")) x <- GMLAbstractGeometry$fromSimpleFeatureGeometry(x)
if(!inherits(x, "GMLAbstractGeometry")){
stop("Input is not a geometry")
}
return(self$addListElement("polygon", x))
},
#'@description Deletes polygon
#'@param x geometry object from \pkg{sf} or object of class inheriting \link{GMLAbstractGeometry}
#'@return \code{TRUE} if deleted, \code{FALSE} otherwise
delPolygon = function(x){
if(is(x,"sfg")) x <- GMLAbstractGeometry$fromSimpleFeatureGeometry(x)
if(!inherits(x, "GMLAbstractGeometry")){
stop("Input is not a geometry")
}
return(self$delListElement("polygon", x))
}
)
)
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