Multi-environment trial of winter wheat at 12 sites in 4 years.
Yield of winter wheat at 12 sites in 4 years.
A data frame with 48 observations on the following 3 variables.
loclocation, 12 levels
yearyear, numeric
yieldyield (kg)
Krzanowski uses this briefly for multi-dimensional scaling.
R. Lyons (1980). A review of multidimensional scaling. Unpublished M.Sc. dissertation, University of Reading.
Krzanowski, W.J. (1988) Principles of multivariate analysis. Oxford University Press.
library(agridat)
data(lyons.wheat)
dat <- lyons.wheat
libs(lattice)
xyplot(yield~factor(year), dat, group=loc,
main="lyons.wheat",
auto.key=list(columns=4), type=c('p','l'))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.