write map data for Mondrian

The function outputs a SpatialPolygonsDataFrame object to be used by Mondrian

sp2Mondrian(SP, file, new_format=TRUE)

Arguments

SP

a SpatialPolygonsDataFrame object

file

file where output is written

new_format

default TRUE, creates a text data file and a separate map file; the old format put both data sets in a single file - the map file is named by inserting "MAP_" into the file= argument after the rightmost directory separator (if any)

Author

Patrick Hausmann and Roger Bivand

Note

At this release, the function writes out a text file with both data and polygon(s) identified as belonging to each row of data.

Examples

if (FALSE) {
td <- tempdir()
xx <- readShapePoly(system.file("shapes/columbus.shp", package="maptools")[1])
sp2Mondrian(xx, file=file.path(td, "columbus1.txt"))
xx <- readShapePoly(system.file("shapes/sids.shp", package="maptools")[1])
sp2Mondrian(xx, file=file.path(td, "sids1.txt"))
}