Stargazer error with polr in R

Question

I obtain an error when using stargazer in conjunction with polr from the MASS package in R . Here is an example:

library(MASS)
library(stargazer)

# Fake data
set.seed(1234)
fake_data <- data.frame(y = as.factor(sample.int(4, 20, replace = TRUE)),
                        x1 = rnorm(20, mean = 1, sd = 1),
                        x2 = rnorm(20, mean = -1, sd = 1))

# Ordered logistic regression
o_log <- MASS::polr(y ~ x1 + x2,
                    data = fake_data,
                    Hess = TRUE, method = "logistic")

summary(o_log)

# Create regression table
stargazer(o_log)

I receive the following error message:

% Error: Unrecognized object type.

Does anyone know how to solve this? Thanks in advance.

PS: I'm on OS X 10.13, using R 3.4.3, MASS 7.3.47, and stargazer 5.2.

EDIT: According to stargazer's vignette, objects from polr should be supported.

Answer 1

I don't know the reason but when I change MASS::polr into plor , the error is removed and it works fine. It seems that it is a bug of package stargazer.

Answer 2

I encountered the same problem. For some strange reason, this only happens when you call the function using :: (in your case: MASS::polr ). It doesn't happen when you first load the package via library(MASS) and then call the specific function.

See: Why do I get different results when using library(MASS) vs. MASS::?

Answer 3

I guess it was because you didn't load the MASS library and instead called the function using :: . MASS library doing some updates on how summary works for polr , which is being used by stargazer to generate the table. By not loading the library, the update was not happened, hence bringing you some trouble with stargazer.