Error: $ Operator Not Defined for This S4 Class

Error: $ operator not defined for this S4 class

You are giving as.formula the wrong input here. Only d$sex ~ d$ahe should be a formula, so:

ctree(as.formula("d$sex ~ d$ahe"))

Or:

ctree(as.formula("sex ~ ahe"), data = d)

stargazer Error: $ operator not defined for this S4 class

This kind of model does not appear to be supported by stargazer, but it is supported by the modelsummary package. (Disclaimer: I am the author.)

library(panelr)
library(modelsummary)

wages <- panel_data(WageData, id = id, wave = t)
mod <- wbm(lwage ~ union, data = dat)

modelsummary(mod)

	Model 1
union	0.055
	(0.025)
(Intercept)	6.675
	(0.021)
imean(union)	0.003
	(0.036)
SD (Intercept)	0.382
SD (Observations)	0.259
Num.Obs.	4165
R2 Marg.	0.000
R2 Cond.	0.685
AIC	2262.8
BIC	2294.5
RMSE	0.24

Error: $ operator not defined for this S4 class when trying to run vuong() function

As you discovered, pscl::vuong doesn't work with lmer models.

There is a nonnest package with a vuongtest function. From the example in that help page:

## Supplying custom vcov function
require(lme4)
require(merDeriv)

fm1 <- lmer(Reaction ~ Days + (Days | Subject), sleepstudy, REML=FALSE)
fm2 <- lmer(Reaction ~ Days + (Days || Subject), sleepstudy, REML=FALSE)

vcl <- function(obj) vcov(obj, full=TRUE)
vuongtest(fm1, fm2, vc1=vcl, vc2=vcl, nested=TRUE)

Error: $ Operator Not Defined for This S4 Class

Error: $ operator not defined for this S4 class

stargazer Error: $ operator not defined for this S4 class

Error: $ operator not defined for this S4 class when trying to run vuong() function

Related Topics

Leave a reply