BayesX: nbAndGraConversion – R documentation

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nbAndGraConversion

Convert nb and gra format into each other

Description

Convert neighborhood structure objects of class "nb" from R-package spdep to graph objects of class "gra" from R-package BayesX and vice versa.

Usage

nb2gra(nbObject)
gra2nb(graObject)

Arguments

`nbObject`	neighborhood structure object of class "nb"
`graObject`	graph object of class "gra"

Value

Equivalent object in the other format.

Author(s)

Daniel Sabanes Bove

Examples

## first nb to gra:
library(spdep)
library(maptools)
columbus <- readShapePoly(system.file("etc/shapes/columbus.shp", package="spdep")[1])
colNb <- poly2nb(columbus)
## ... here manual editing is possible ...
## then export to graph format
colGra <- nb2gra(colNb)

## and save in BayesX file
graFile <- tempfile()
write.gra(colGra, file=graFile)

## now back from gra to nb:
colGra <- read.gra(graFile)
newColNb <- gra2nb(colGra)
newColNb
## compare this with the original
colNb
## only the call attribute does not match (which is OK):
all.equal(newColNb, colNb,
          check.attributes=FALSE)
attr(newColNb, "call")
attr(colNb, "call")

BayesX

R Utilities Accompanying the Software Package BayesX

v0.3-1

GPL-2 | GPL-3

Authors

Nikolaus Umlauf [aut, cre], Thomas Kneib [aut], Nadja Klein [aut], Felix Heinzl [ctb], Andreas Brezger [ctb], Daniel Sabanes Bove [ctb]

Initial release

2019-08-23