agricolae (version 1.1-5)

stability.nonpar: Nonparametric stability analysis

Description

A method based on the statistical ranges of the study variable per environment for the stability analysis.

Usage

stability.nonpar(data, variable = NULL, ranking = FALSE)

Arguments

data

First column the genotypes following environment

variable

Name of variable

ranking

print ranking

Value

• data
  Numeric
• variable
  Character
• ranking
  Logical

References

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.

See Also

stability.par

Examples

library(agricolae)
data(haynes)
stability.nonpar(haynes,"AUDPC",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)

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)