#' Function to erase pieces of a polygon based on another polygon.
#'
#' \code{sp_erase} can be thought as the inverse of \code{sp_punch}.
#'
#' @param sp_1 Geometry one.
#'
#' @param sp_2 Geometry two,
#'
#' @param features Should the function keep features?
#'
#' @author Stuart K. Grange
#'
#' @export
sp_erase <- function(sp_1, sp_2, features = FALSE)
rgeos::gIntersection(sp_1, sp_2, byid = features)
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