predictmeans (version 1.0.9)

permanova.lmer: Permutation ANOVA for lmer Model

Description

This function provides permutation ANOVA for lmer model.

Usage

permanova.lmer(model, nperm = 999, ncore=3, type = c("I", "II", "III",  "1", "2", "3"),
 ...)

Value

Permutation ANOVA table.

Arguments

model

Model object returned by lmer.

nperm

Number of permutation, the default value is 999.

ncore

Number of core for parallel computing, the default value is 3.

type

The type of ANOVA table requested (using SAS terminology) with Type I being the familiar sequential ANOVA table.

...

Use to setup option: seed -- Specify a random number generator seed, for reproducible results.

Author

Dongwen Luo, Siva Ganesh and John Koolaard

Examples

# library(predictmeans)
# Oats$nitro <- factor(Oats$nitro) 
# fm <- lmer(yield ~ nitro*Variety+(1|Block/Variety), data=Oats)

## Permutation Test for model terms
# permanova.lmer(fm)
# permanova.lmer(fm, type=2)
## Compare to F test
# fm0 <- lme(yield ~ nitro*Variety, random=~1|Block/Variety, data=Oats)
# anova(fm0)