ade4 (version 1.01)

irishdata: Geary's Irish Data

Description

This data set contains geographic informations about 25 counties of Ireland.

Usage

data(irishdata)

format

irishdata is a list of 5 components.

1. area

{is a data frame with polygons for each of the 25 contiguous counties.} county.names{is a vector with the names of the 25 counties.} xy{is a data frame with the coordinates centers of the 25 counties.} tab{is a data frame with 25 rows (counties) and 12 variables.} contour{is a data frame with the global polygon of all the 25 counties.}

source

Geary, R.C. (1954) The contiguity ratio and statistical mapping. The incorporated Statistician, 5, 3, 115--145. Cliff, A.D. and Ord, J.K. (1973) Spatial autocorrelation, Pion, London. 1--178.

Examples

data(irishdata)
par(mfrow = c(2,2))
area.plot(irishdata$area, lab = irishdata$county.names, clab = 0.75)
area.plot(irishdata$area)
apply(irishdata$contour, 1, function(x) segments(x[1],x[2],x[3],x[4], 
    lwd = 3))
s.corcircle(dudi.pca(irishdata$tab, scan = FALSE)$co)
score <- dudi.pca(irishdata$tab, scan = FALSE, nf = 1)$li$Axis1
names(score) <- row.names(irishdata$tab)
area.plot(irishdata$area, score)
par(mfrow = c(1,1))