geoR (version 1.5-6)

hoef: Data for spatial analysis of experiments

Description

The hoef data frame has 25 rows and 5 columns. The data consists of a uniformity trial for which artificial treatment effects were assign to the plots.

Usage

data(hoef)

source

Ver Hoef, J.M. & Cressie, N. (1993) Spatial statistics: analysis of field experiments. In Scheiner S.M. and Gurevitch, J. (Eds) Design and Analysis of Ecological Experiments. Chapman and Hall.

Details

The treatment effects assign to the plots are:

• Treatment 1:$\tau_1 = 0$
• Treatment 2:$\tau_2 = -3$
• Treatment 3:$\tau_3 = -5$
• Treatment 4:$\tau_4 = 6$
• Treatment 5:$\tau_5 = 6$

Examples

data(hoef)
hoef.geo <- as.geodata(hoef, covar.col=4)
summary(hoef)
summary(hoef.geo)
points(hoef.geo, cex.min=2, cex.max=2, pt.div="quintiles")