SIPC.AMMI: Sums of the Absolute Value of the IPC Scores

Description Usage Arguments Details

View source: R/SIPC.AMMI.R

Description

SIPC.AMMI computes the Sums of the Absolute Value of the IPC Scores (ASI) (Sneller et al., 1997) considering all significant interaction principal components (IPCs) in the AMMI model. Using SIPC, the Simultaneous Selection Index for Yield and Stability (SSI) is also calculated according to the argument ssi.method.

Usage

1
SIPC.AMMI(model, n, alpha = 0.05, ssi.method = c("farshadfar", "rao"), a = 1)

Arguments

model

The AMMI model (An object of class AMMI generated by AMMI).

n

The number of principal components to be considered for computation. The default value is the number of significant IPCs.

alpha

Type I error probability (Significance level) to be considered to identify the number of significant IPCs.

ssi.method

The method for the computation of simultaneous selection index. Either "farshadfar" or "rao" (See SSI).

a

The ratio of the weights given to the stability components for computation of SSI when method = "rao" (See SSI).

Details

The Sums of the Absolute Value of the IPC Scores (SIPC) is computed as follows:

SIPC = ∑N'n=10.5n γin|


ajaygpb/AMMIStbp documentation built on Jan. 27, 2020, 8:53 a.m.