spChFIDs-methods {sp} | R Documentation

## change feature IDs in spatial objects

### Description

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(s)

Roger Bivand

### See Also

`spCbind-methods`, `spRbind-methods`

### Examples

    ## Not run:
    require(maptools)
    xx <- readShapePoly(system.file("shapes/sids.shp", package="maptools")[1],
      IDvar="FIPSNO", proj4string=CRS("+proj=longlat +ellps=clrk66"))
    row.names(as(xx, "data.frame"))
    xx1 <- spChFIDs(xx, as.character(xx$CNTY_ID))
    row.names(as(xx1, "data.frame"))

    ## End(Not run)

[Package sp version 1.2-5 Index]