CalculateMmatrix: CalculateMmatrix

In lsmeans: Calculates the lsmeans and their variances for lm, gls,lme,mer,lmer and glmer models

Description

Calculates a matrix needed for other routines in the lsmeans package. This function is computationally demanding and there is no need to call it more than once for a given model.

Usage

CalculateMmatrix(myModel, myData)

Arguments

myModel	An object of class lm, gls, mle, glm, mer, lmerMod or glmerMod
myData	A data frame included in the data argument of the call to the lm, gls, mle, glm, lmer and glmer functions.

Value

An object of class matrix. This matrix is required as an argument of the following function of the lsmeans package:

CalculateMatrixofMeansAndStandardErrors() MeanAndVariance() MeansComparison()

Author(s)

Julio A. Di Rienzo <email: [e-mail]>

Examples

library(nlme)
library(lme4)
library(lsmeans)
Oats[,"nitro"]=as.factor(Oats[,"nitro"])
myModel<-lme(yield~1+Variety+nitro+Variety:nitro,random =~1|Block/Variety,,method="REML",data=Oats)
Mmatrix=CalculateMmatrix(myModel,Oats)

lsmeans documentation built on May 2, 2019, 6:15 p.m.