meff.asreml {asreml}R Documentation

Calculate marker effects

Description

Function that estimates genetic regressor (marker) effects for a fitted asreml model object using a provided matrix of marker scores and an asreml fit with the specified relationship matrix.

Usage

## S3 method for class 'asreml'
meff(object, effects = ~NULL, mef = list(), se = FALSE, evaluate = TRUE, ...)

Arguments

object

An asreml object.

effects

A one-sided formula giving the terms in the model (separated by "+") for which marker effects are to be calculated. If ~NULL, the term associated with the first variance matrix in the mef list will be used (default = ~NULL).

mef

A list associating a known relationship matrix (rm) used in the model with a matrix of regressor scores, with components in the form: rm = "regressor-scores".

se

If TRUE, calculates the standard errors of the effects (default = FALSE).

evaluate

If TRUE, evaluates the effects by a call to update.asreml; otherwise, it returns the unevaluated call (default = TRUE).

...

Additional arguments to asreml.

Value

An asreml object with a component mef, a list with length(mef) components containing the matrices of regressor effects and (optional) standard errors.

[Package asreml version 4.2.0.480 Index]