Possible bug in termplot function (stats package) ?

On Mon, Jun 6, 2011 at 6:29 PM, peter dalgaard <pdalgd at gmail.com> wrote:

On Jun 6, 2011, at 17:15 , Joris Meys wrote:

**snip**

If nothing is found, an error is returned. If
anything is found, data won't be NULL, so line 20, when reached, will
always return FALSE. Can it be that lines 18 and 19 should be removed
from the function?

I think this is a false assumption. What keeps model$call$data from being NULL?

Apart from a dataframe that is explicitly assigned NULL, I can't
imagine a case where model$call$data would be NULL. If it's not found,
the statement returns an error. If it is found and it is NULL, your
model call will have thrown an error earlier, so you won't even have
an object to plot. If you can give me one example where that code
actually makes sense, I'll be very happy. But right now, it doesn't
make any sense at all to me.

x <- 1:10
y <- rnorm(10)
m <- lm(y~x)
m$call

m$call$data