agridat (version 1.23)

rothamsted.brussels: RCB experiment of brussels sprouts, 9 fertilizer treatments

Description

RCB experiment of brussels sprouts, 9 fertilizer treatments

Format

A data frame with 48 observations on the following 5 variables.

row

row

col

column

yield

yield of saleable sprouts, pounds

trt

treatment, 9 levels

block

block, 4 levels

Details

The block numbers are arbitrary, and may not match the orignal source.

Plots were 10 yards x 14 yards. Plot orientation is not clear.

References

McCullagh, P. and Clifford, D., (2006). Evidence for conformal invariance of crop yields, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 462, 2119--2143. https://doi.org/10.1098/rspa.2006.1667

Examples

if (FALSE) {
  
library(agridat)
data(rothamsted.brussels)
dat <- rothamsted.brussels

libs(lattice)
bwplot(yield~trt, dat, main="rothamsted.brussels")

  libs(desplot)
  desplot(dat, yield~col*row,
          num=trt, out1=block, cex=1, # aspect unknown
          main="rothamsted.brussels")

}