# NOT RUN {
data(burgueno.unreplicated)
dat <- burgueno.unreplicated
# Define a 'check' variable for colors
dat$check <- ifelse(dat$gen=="G000", 2, 1)
# Every fourth column is the 'check' genotype
if(require(desplot)){
desplot(yield ~ col*row, data=dat,
col=check, num=gen, #text=gen, cex=.3, # aspect unknown
main="burgueno.unreplicated")
}
# ----------------------------------------------------------------------------
# }
# NOT RUN {
# asreml3
require(asreml)
require(lucid)
# AR1 x AR1 with random genotypes
dat <- transform(dat, xf=factor(col), yf=factor(row))
dat <- dat[order(dat$xf,dat$yf),]
m2 <- asreml(yield ~ 1, data=dat, random = ~ gen,
rcov = ~ ar1(xf):ar1(yf))
vc(m2)
# Note the strong saw-tooth pattern in the variogram. Seems to
# be column effects.
plot(variogram(m2), xlim=c(0,15), ylim=c(0,9), zlim=c(0,0.5),
main="burgueno.unreplicated - AR1xAR1")
# library(lattice) # Show how odd columns are high
# bwplot(resid(m2) ~ col, data=dat, horizontal=FALSE)
# Define an even/odd column factor as fixed effect
# dat$oddcol <- factor(dat$col <!-- %% 2) -->
# The modulus operator throws a bug, so do it the hard way.
dat$oddcol <- factor(dat$col - floor(dat$col / 2) *2 )
m3 <- update(m2, yield ~ 1 + oddcol)
m3$loglik # Matches Burgueno table 3, line 3
plot(variogram(m3), xlim=c(0,15), ylim=c(0,9), zlim=c(0,0.5),
main="burgueno.unreplicated - AR1xAR1 + Even/Odd")
# Much better-looking variogram
# }
# NOT RUN {
# ----------------------------------------------------------------------------
# }
# NOT RUN {
## require(asreml4)
## require(lucid)
## # AR1 x AR1 with random genotypes
## dat <- transform(dat, xf=factor(col), yf=factor(row))
## dat <- dat[order(dat$xf,dat$yf),]
## m2 <- asreml(yield ~ 1, data=dat, random = ~ gen,
## resid = ~ ar1(xf):ar1(yf))
## vc(m2)
## ## effect component std.error z.ratio bound <!-- %ch -->
## ## gen 0.9122 0.127 7.2 P 0
## ## xf:yf(R) 0.4993 0.05601 8.9 P 0
## ## xf:yf!xf!cor -0.2431 0.09156 -2.7 U 0
## ## xf:yf!yf!cor 0.1255 0.07057 1.8 U 0.1
## # Note the strong saw-tooth pattern in the variogram. Seems to
## # be column effects.
## plot(varioGram(m2), xlim=c(0,15), ylim=c(0,9), zlim=c(0,0.5),
## main="burgueno.unreplicated - AR1xAR1")
## # library(lattice) # Show how odd columns are high
## # bwplot(resid(m2) ~ col, data=dat, horizontal=FALSE)
## # Define an even/odd column factor as fixed effect
## # dat$oddcol <- factor(dat$col <!-- %% 2) -->
## # The modulus operator throws a bug, so do it the hard way.
## dat$oddcol <- factor(dat$col - floor(dat$col / 2) *2 )
## m3 <- update(m2, yield ~ 1 + oddcol)
## m3$loglik # Matches Burgueno table 3, line 3
## plot(varioGram(m3), xlim=c(0,15), ylim=c(0,9), zlim=c(0,0.5),
## main="burgueno.unreplicated - AR1xAR1 + Even/Odd")
## # Much better-looking variogram
# }
# NOT RUN {
# }
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