Check variety yields in winter wheat.
Check variety yields in winter wheat.
data("besag.checks")A data frame with 364 observations on the following 4 variables.
yieldyield, units of 10g
rowrow
colcolumn
gengenotype/variety
This data was used by Besag to show the spatial variation in a field experiment, but Besag did not use the data for any analysis.
Yields of winter wheat varieties (Bounty and Huntsman) at the Plant Breeding Institute, Cambridge, in 1980. These data are the 'checks' genotypes in a larger variety trial.
There is a column of checks, then five columns of new varieties. Repeat.
Plot dimensions approx 1.5 by 4.5 metres
Field length: 52 rows * 4.5 m = 234 m
Field width: 31 columns * 1.5 m = 46.5
Electronic version of data supplied by David Clifford.
Besag, J.E. & Kempton R.A. (1986). Statistical analysis of field experiments using neighbouring plots. Biometrics, 42, 231-251. https://doi.org/10.2307/2531047
Kempton, Statistical Methods for Plant Variety Evaluation, page 91–92
library(agridat)
data(besag.checks)
dat <- besag.checks
## Not run:
libs(desplot)
desplot(dat, yield~col*row,
num=gen, aspect=234/46.5, # true aspect
main="besag.checks")
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.