stability.nonpar {agricolae} | R Documentation |
A method based on the statistical ranges of the study variable per environment for the stability analysis.
stability.nonpar(data, variable = NULL, ranking = FALSE)
data |
First column the genotypes following environment |
variable |
Name of variable |
ranking |
print ranking |
data |
Numeric |
variable |
Character |
ranking |
Logical |
Felipe de Mendiburu
Haynes K G, Lambert D H, Christ B J, Weingartner D P, Douches D S, Backlund J E, Fry W and Stevenson W. 1998. Phenotypic stability of resistance to late blight in potato clones evaluated at eight sites in the United States American Journal Potato Research 75, pag 211-217.
library(agricolae) data(haynes) stability.nonpar(haynes,"YIELD",ranking=TRUE) # Example 2 data(CIC) data1<-CIC$comas[,c(1,6,7,17,18)] data2<-CIC$oxapampa[,c(1,6,7,19,20)] cic <- rbind(data1,data2) attach(cic) means <- by(cic[,5], cic[,c(2,1)], function(x) mean(x,na.rm=TRUE)) means <-as.data.frame(means[,]) cic.mean<-data.frame(genotype=row.names(means),means) cic.mean<-delete.na(cic.mean,"greater") stability.nonpar(cic.mean)