mdrr dataset in caret package

Question

The mdrr dataset in caret package is a set of two objects; data.frame ( mdrrDescr ), and an ordinary factor ( mdrrClass ). when I try to run View() command for mdrrClass it shows a factor with zero entries. why is it like this? also how to create a factor like that ? I think it'll be better to understand the question if you just run these commands.

data(mdrr)
class(mdrrClass)
View(mdrrClass)

it says:

"Showing 1 to 0 of 528 entries"

on the source pane.

Answer 1

I think it depends on which version from Rstudio you have. In my case View(mdrrClass) shows me the structure of mdrrClass in the view pane as if you ran dput(mddrClass) .

You can replicate it with a simple example:

set.seed(1234)
ex <- as.factor(sample(1:2, 10, replace = T))
View(ex)

This shows me the dput structure and the values in the view pane.