[R] diagnostic information in glm. How about N of missing observations?

[Paul Johnson]

I handed out some results from glm() and the students ask "how many 
observations were dropped due to missing values"?

How would I know? 

In other stat programs, the results will typically include N and the 
number dropped because of missings.  Without going back to R and 
fiddling about to find the total number of rows in the dataframe, there 
is no way to tell.  Somewhat inconvenient. Do you agree?

-- 
Paul E. Johnson                       email: pauljohn at ku.edu
Dept. of Political Science            http://lark.cc.ku.edu/~pauljohn
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