change feature IDs in spatial objects

When the feature IDs need to be changed in SpatialLines* or SpatialPolygons* objects, these methods may be used. The new IDs should be a character vector of unique IDs of the correct length.

Methods

obj = "SpatialLines", x = "character"

replace IDs in a SpatialLines object

obj = "SpatialLinesDataFrame", x = "character"

replace IDs in a SpatialLinesDataFrame object

obj = "SpatialPolygons", x = "character"

replace IDs in a SpatialPolygons object

obj = "SpatialPolygonsDataFrame", x = "character"

replace IDs in a SpatialPolygonsDataFrame object

Note

It is usually sensible to keep a copy of the original feature IDs in the object, but this should be done by the user.

Author

Roger Bivand

Examples

if (FALSE) { # \dontrun{
if(require(sf)) {
xx <- as(st_read(system.file("shape/nc.shp", package="sf")[1]), "Spatial")
row.names(xx) <- as.character(xx$"FIPSNO")
row.names(as(xx, "data.frame"))
xx1 <- spChFIDs(xx, as.character(xx$CNTY_ID))
row.names(as(xx1, "data.frame"))
}} # }