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fit12
2023 Aug 31
1
simulating future observations from heteroscedastic fits
...gp=factor(rep(1:2, e=3))))
# I want to fit 4 models
# and simulate future observations from all 4:
fit11 <- lm(y~1, DF3_2)
fit21 <- lm(y~gp, DF3_2)
library(nlme)
(fit12 <- lme(y~1, data=DF3_2, random=~1|gp))
(fit22 <- lme(y~gp, data=DF3_2, random=~1|gp))
library(lme4)
(fit12r <- lmer(y~1+(1|gp), data=DF3_2, REML=FALSE))
(fit22r <- lmer(y~gp+(1|gp), data=DF3_2, REML=FALSE))
# I can simulate what I want for fit11 and fit21
# as follows:
simPred <- function(object, nSims=2){
pred <- predict(object, DF3_2[6,], se.fit=TRUE,
interval='p...