## Borrowed verbatim from geojsonio:
## https://github.com/ropensci/geojsonio/blob/321c679057e2dde282e564f3c845dea7f280ccf9/R/as_spatial_methods.R
## SpatialPoints to SpatialPointsDataFrame
as.SpatialPointsDataFrame.SpatialPoints <- function(from) {
if (!requireNamespace("sp", quietly = TRUE)) {
stop("Package sp required. Please install.")
}
ids <- rownames(slot(from, "coords"))
if (is.null(ids)) {
ids <- 1:NROW(slot(from, "coords"))
}
df <- data.frame(dummy = rep(0, length(ids)), row.names = ids)
sp::SpatialPointsDataFrame(from, df)
}
setAs(
"SpatialPoints", "SpatialPointsDataFrame",
as.SpatialPointsDataFrame.SpatialPoints
)
## SpatialLines to SpatialLinesDataFrame
as.SpatialLinesDataFrame.SpatialLines <- function(from) {
if (!requireNamespace("sp", quietly = TRUE)) {
stop("Package sp required. Please install.")
}
IDs <- sapply(slot(from, "lines"), function(x) slot(x, "ID"))
df <- data.frame(dummy = rep(0, length(IDs)), row.names = IDs)
sp::SpatialLinesDataFrame(from, df)
}
setAs(
"SpatialLines", "SpatialLinesDataFrame",
as.SpatialLinesDataFrame.SpatialLines
)
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