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GMLAbstractDiscreteCoverage.R
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GMLAbstractDiscreteCoverage.R
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#' GMLAbstractDiscreteCoverage
#'
#' @docType class
#' @importFrom R6 R6Class
#' @export
#' @keywords ISO GML abstract discrete coverage
#' @return Object of \code{\link{R6Class}} for modelling an GML abstract discrete coverage
#' @format \code{\link{R6Class}} object.
#'
#' @section Methods:
#' \describe{
#' \item{\code{new(xml, element, attrs, defaults)}}{
#' This method is used to instantiate a GML abstract discrete coverage
#' }
#' \item{\code{setCoverageFunction(coverageFunction)}}{
#' Set a coverage function, object of class \code{GMLGridFunction} or
#' \code{GMLCoverageMappingRule}
#' }
#' }
#'
#' @note Class used internally by geometa
#'
#' @references
#' ISO 19136:2007 Geographic Information -- Geographic Markup Language.
#' http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=32554
#' OGC Geography Markup Language. http://www.opengeospatial.org/standards/gml
#'
#' @author Emmanuel Blondel <emmanuel.blondel1@@gmail.com>
#'
GMLAbstractDiscreteCoverage <- R6Class("GMLAbstractDiscreteCoverage",
inherit = GMLAbstractCoverage,
private = list(
xmlElement = "GridAbstractDiscreteCoverage",
xmlNamespacePrefix = "GML"
),
public = list(
coverageFunction = NULL,
initialize = function(xml = NULL, element = NULL, attrs = list(),
defaults = list(), wrap = TRUE){
if(is.null(element)) element <- private$xmlElement
super$initialize(xml, element = element, attrs = attrs,
defaults = defaults, wrap = wrap)
},
#setCoverageFunction
setCoverageFunction = function(coverageFunction){
allowedIsClasses <- c("GMLCoverageMappingRule","GMLGridFunction")
if(!any(sapply(allowedIsClasses, function(x){return(is(coverageFunction, x))}))){
stop("The argument should inherit one of the classes [%s]",
paste(allowedIsClasses, collapse=","))
}
self$coverageFunction <- coverageFunction
}
)
)