This data set gives the genotypes of 704 cattle individuals for 30
microsatellites recommended by the FAO. The individuals are divided into two
countries (Afric, France), two species (Bos taurus, Bos indicus) and 15
breeds. Individuals were chosen in order to avoid pseudoreplication
according to their exact genealogy.
Format
microbov is a genind object with 3 supplementary components:
coun
a factor giving the country of each individual (AF:
Afric; FR: France).
breed
a factor giving the breed of each
individual.
spe
is a factor giving the species of each individual
(BT: Bos taurus; BI: Bos indicus).
Source
Data prepared by Katayoun Moazami-Goudarzi and Denis Lalo"e (INRA,
Jouy-en-Josas, France)
References
Lalo"e D., Jombart T., Dufour A.-B. and Moazami-Goudarzi K.
(2007) Consensus genetic structuring and typological value of markers using
Multiple Co-Inertia Analysis. Genetics Selection Evolution.
39: 545–567.
Examples
## Not run:
data(microbov)
microbov
summary(microbov)
# make Y, a genpop object
Y <- genind2genpop(microbov)
# make allelic frequency table
temp <- makefreq(Y,missing="mean")
X <- temp$tab
nsamp <- temp$nobs
# perform 1 PCA per marker
kX <- ktab.data.frame(data.frame(X),Y@loc.n.all)
kpca <- list()
for(i in 1:30) {kpca[[i]] <- dudi.pca(kX[[i]],scannf=FALSE,nf=2,center=TRUE,scale=FALSE)}
sel <- sample(1:30,4)
col = rep('red',15)
col[c(2,10)] = 'darkred'
col[c(4,12,14)] = 'deepskyblue4'
col[c(8,15)] = 'darkblue'
# display %PCA
par(mfrow=c(2,2))
for(i in sel) {
s.multinom(kpca[[i]]$c1,kX[[i]],n.sample=nsamp[,i],coulrow=col,sub=locNames(Y)[i])
add.scatter.eig(kpca[[i]]$eig,3,xax=1,yax=2,posi="top")
}
# perform a Multiple Coinertia Analysis
kXcent <- kX
for(i in 1:30) kXcent[[i]] <- as.data.frame(scalewt(kX[[i]],center=TRUE,scale=FALSE))
mcoa1 <- mcoa(kXcent,scannf=FALSE,nf=3, option="uniform")
# coordinated %PCA
mcoa.axes <- split(mcoa1$axis, Y@loc.fac)
mcoa.coord <- split(mcoa1$Tli,mcoa1$TL[,1])
var.coord <- lapply(mcoa.coord,function(e) apply(e,2,var))
par(mfrow=c(2,2))
for(i in sel) {
s.multinom(mcoa.axes[[i]][,1:2],kX[[i]],n.sample=nsamp[,i],coulrow=col,sub=locNames(Y)[i])
add.scatter.eig(var.coord[[i]],2,xax=1,yax=2,posi="top")
}
# reference typology
par(mfrow=c(1,1))
s.label(mcoa1$SynVar,lab=popNames(microbov),sub="Reference typology",csub=1.5)
add.scatter.eig(mcoa1$pseudoeig,nf=3,xax=1,yax=2,posi="top")
# typologial values
tv <- mcoa1$cov2
tv <- apply(tv,2,function(c) c/sum(c))*100
rownames(tv) <- locNames(Y)
tv <- tv[order(locNames(Y)),]
par(mfrow=c(3,1),mar=c(5,3,3,4),las=3)
for(i in 1:3){
barplot(round(tv[,i],3),ylim=c(0,12),yaxt="n",main=paste("Typological value -
structure",i))
axis(side=2,at=seq(0,12,by=2),labels=paste(seq(0,12,by=2),"%"),cex=3)
abline(h=seq(0,12,by=2),col="grey",lty=2)
}
## End(Not run)