listw2sn | R Documentation |

The function makes a `"spatial neighbour"`

object representation
(similar to the S-PLUS spatial statististics module representation of a
`"listw"`

spatial weights object. `sn2listw()`

is the inverse function to `listw2sn()`

, creating a `"listw"`

object from a `"spatial neighbour"`

object.

listw2sn(listw) sn2listw(sn)

`listw` |
a |

`sn` |
a |

`listw2sn()`

returns a data frame with three columns, and with class `spatial.neighbour`

:

`from` |
region number id for the start of the link (S-PLUS row.id) |

`to` |
region number id for the end of the link (S-PLUS col.id) |

`weights` |
weight for this link |

Roger Bivand Roger.Bivand@nhh.no

`nb2listw`

columbus <- st_read(system.file("shapes/columbus.shp", package="spData")[1], quiet=TRUE) col.gal.nb <- read.gal(system.file("weights/columbus.gal", package="spData")[1]) col.listw <- nb2listw(col.gal.nb) col.listw$neighbours[[1]] col.listw$weights[[1]] col.sn <- listw2sn(col.listw) str(col.sn)

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