[R] I Need Help with AMMI

[arun]

HI,
data6$Gen=paste("G",data6$Gen,sep="")
#Error in paste("G", data6$Gen, sep = "") : object 'data6' not found


Please check this link:
http://stackoverflow.com/questions/7027288/error-could-not-find-function-in-r

A.K.




R-Community,
I am new to r. I have used SAS all my life. SO, here I am trying to use AMMI with agricolae package. Each time I have tried to run the program, I get the message that says, " [error: could not find function "ammi"]". What could possibly be happening?

Noble

(Here is my code)

data6$Gen=paste("G",data6$Gen,sep="")
G=data6$Geno
E=data6$Env
TW=data6$TW
n=length(TW)
Rep=rep(1,n)  ## Replication is needed for AMMI analysis. If there is no replication, just assign column of 1

par(mfrow=c(1,1))
#model<- ammi(E, G, Rep, TW,graph="biplot")
model=ammi(E, G, Rep, TW,graph="biplot",number=FALSE)

biplot<-model$biplot[,1:4]
head(biplot)

#attach(biplot)
#par(cex=0.8)
#length(biplot$PWT)
par(mfrow=c(1,1))
plot(biplot$TW,biplot$PC1,cex=0.0,text(biplot$TW,biplot$PC1,labels=row.names(biplot),col="blue"),
 main="AMMI BIPLOT",ylab="PC1",xlab="Test Weight", frame=TRUE)  ##Bioplot based actual mean and PC1

MEANS<-mean(TW)
abline(h=0,v= MEANS,lty=2,col="red")

names=rownames(bplot)
id=which(biplot$type=="ENV")
enames=names[id]
y=biplot[,2][id]
pc1=biplot[,3][id]
s <- seq(enames)
arrows(MEANS, 0, y[s], pc1[s], col = "brown", lwd = 1.8, length = 0.1, code = 2)