spCbind-methods {maptools} | R Documentation

## cbind for spatial objects

### Description

`spCbind` provides cbind-like methods for Spatial*DataFrame objects in addition to the `$`, `[<-` and `[[<-` methods already available.

### Methods

obj = "SpatialPointsDataFrame", x = "data.frame"

  cbind a data frame to the data slot of a SpatialPointsDataFrame object

obj = "SpatialPointsDataFrame", x = "vector"

  cbind a vector to the data slot of a SpatialPointsDataFrame object

obj = "SpatialLinesDataFrame", x = "data.frame"

  cbind a data frame to the data slot of a SpatialLinesDataFrame object; the data frame argument must have row names set to the Lines ID values, and should be re-ordered first by matching against a shared key column

obj = "SpatialLinesDataFrame", x = "vector"

  cbind a vector to the data slot of a SpatialLinesDataFrame object

obj = "SpatialPolygonsDataFrame", x = "data.frame"

  cbind a data frame to the data slot of a SpatialPolygonsDataFrame object; the data frame argument must have row names set to the Polygons ID values, and should be re-ordered first by matching against a shared key column

obj = "SpatialPolygonsDataFrame", x = "vector"

  cbind a vector to the data slot of a SpatialPolygonsDataFrame object

### Author(s)

Roger Bivand

### See Also

`spChFIDs-methods`, `spRbind-methods`

### Examples

    xx <- readShapePoly(system.file("shapes/sids.shp", package="maptools")[1],
      IDvar="FIPSNO", proj4string=CRS("+proj=longlat +ellps=clrk66"))
    library(foreign)
    xtra <- read.dbf(system.file("share/nc_xtra.dbf", package="maptools")[1])
    o <- match(xx$CNTY_ID, xtra$CNTY_ID)
    xtra1 <- xtra[o,]
    row.names(xtra1) <- xx$FIPSNO
    xx1 <- spCbind(xx, xtra1)
    names(xx1)
    identical(xx1$CNTY_ID, xx1$CNTY_ID.1)

[Package maptools version 0.9-2 Index]