sp2WB: Export SpatialPolygons object as S-Plus map for WinBUGS

In maptools: Tools for Handling Spatial Objects

Description

The function exports an sp SpatialPolygons object into a S-Plus map format to be import by WinBUGS.

Usage

sp2WB(map, filename, Xscale = 1, Yscale = Xscale, plotorder = FALSE)

Arguments

map	a SpatialPolygons object
filename	file where output is written
Xscale, Yscale	scales to be written in the output file
plotorder	default=FALSE, if TRUE, export polygons in plotting order

Author(s)

Virgilio Gómez Rubio, partly derived from earlier code by Thomas Jagger

References

http://www.mrc-bsu.cam.ac.uk/wp-content/uploads/geobugs12manual.pdf

Examples

xx <- readShapePoly(system.file("shapes/sids.shp", package="maptools")[1],
 IDvar="FIPSNO", proj4string=CRS("+proj=longlat +ellps=clrk66"))
plot(xx, border="blue", axes=TRUE, las=1)
tf <- tempfile()
sp2WB(as(xx, "SpatialPolygons"), filename=tf)
xxx <- readSplus(tf, proj4string=CRS("+proj=longlat +ellps=clrk66"))
all.equal(xxx, as(xx, "SpatialPolygons"), tolerance=.Machine$double.eps^(1/4),
 check.attributes=FALSE)
## Not run: 
x <- readAsciiGrid(system.file("grids/test.ag", package="maptools")[1])
xp <- as(x, "SpatialPixelsDataFrame")
pp <- as(xp, "SpatialPolygons")
td <- tempdir()
sp2WB(pp, filename=file.path(td, "test.map"))

## End(Not run)

Example output

Loading required package: sp
Checking rgeos availability: FALSE
 	Note: when rgeos is not available, polygon geometry 	computations in maptools depend on gpclib,
 	which has a restricted licence. It is disabled by default;
 	to enable gpclib, type gpclibPermit()
Warning message:
readShapePoly is deprecated; use rgdal::readOGR or sf::st_read 
[1] "Names: 100 string mismatches"

maptools documentation built on Feb. 7, 2021, 3:01 p.m.