gg_tai: Tai's stability analysis

In c5sire/fbmet: Provides convenience Tools for Analysis of Multi-environmental Field Trials

Description

This function runs Tai's stability analysis (Tai, G. C. C., 1971). It assumes a RCBD with fixed effects for genotypes and random effects for environments.

Usage

gg_tai(trait, geno, env, rep, data, maxp = 0.1, conf = 0.95, title = NULL,
  color = c("darkorange", "black", "gray"), size = c(1, 1),
  scaleSize = TRUE)

Arguments

trait	The trait to analyze.
geno	The genotypes.
env	The environments.
rep	The replications or blocks. A RCBD is assumed.
data	The name of the data frame containing the data.
maxp	Maximum allowed proportion of missing values to estimate, default is 10%.
conf	Probability for the Tai limits.
title	Main title for plot.
color	Color for symbols, labels and lines. Ignored; maintained for compatibility with original tai function.
size	Relative size for symbols and labels. Ignored; maintained for compatibility with original tai function.
scaleSize	logical. Whether dots should be scaled by trait value or not. Default is TRUE.

Details

The limits for alpha and lambda are computed using the mean squares from an ANOVA table for a RCBD with blocks nested into environments. If the data set is unbalanced, a warning is produced.

Value

It returns the Tai graph for stability analysis but not anymore the values of alpha and lambda for each genotype. Use 'tai' function.

Author(s)

Raul Eyzaguirre

Reinhard Simon (transfer to ggplot2)

References

Tai, G. C. C. (1971). Genotypic Stability Analysis and Its Application to Potato Regional Trials, Crop Science, Vol 11.

c5sire/fbmet documentation built on May 13, 2019, 10:34 a.m.