usr {sommer}

unstructured covariance structure

Description

usr creates an unstructured covariance structure for specific levels of the random effect to be used with the mmer solver.

Usage

  usr(x)

Arguments

x

vector of observations for the random effect.

Value

$res

a list with the provided vector and the variance covariance structure expected for the levels of the random effect.

Author(s)

Giovanny Covarrubias-Pazaran

References

Covarrubias-Pazaran G (2016) Genome assisted prediction of quantitative traits using the R package sommer. PLoS ONE 11(6): doi:10.1371/journal.pone.0156744

See Also

The function vsr to know how to use usr in the mmer solver.

Examples

x <- as.factor(c(1:5,1:5,1:5));x
usr(x)