gge2003 {bpca} | R Documentation |
A didatic matrix of genotypes (rows) and environments (colums) proposed by Weikai Yan and Manjit S. Kang in GGE biplot analysis: a graphical tool for breeders, geneticists, and agronomists.
gge2003
The format is: num [1:4, 1:3] 20 6 -10 8 -9 12 -6 -12 6 -15 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:4] "G1" "G2" "G3" "G4" ..$ : chr [1:3] "E1" "E2" "E3"
Yan, B. W. and Kang, M. S. (2003) GGE biplot analysis : a graphical tool for breeders, geneticists, and agronomists. CRC Press, New York, 288p.
## ## Example from YAN, W & KANG, M.S. GGE biplot analysis : a graphical tool ## for breeders, geneticists, and agronomists ## data(gge2003) bp <- bpca(t(gge2003), var.rb=TRUE) as.dist(bp$var.rb) x11(w=8, h=4) op = par(no.readonly=TRUE) par(mfrow=c(1,2)) plot(bpca(gge2003, var.pos=2), main='Columns as variables \n (var.pos=2)', var.col=1, obj.col=c(2:4, 2), obj.cex=.8) plot(bpca(gge2003, var.pos=1), main='Rows as variables \n (var.pos=1)', var.col=1, obj.col=2:4, obj.cex=.8) par(op)