[R] no doubt a dumb question, but..

Doran, Harold HDoran at air.org
Tue Nov 9 13:35:13 CET 2004

It would work if you modified as follows:


Or alternatively,



-----Original Message-----
From: r-help-bounces at stat.math.ethz.ch
[mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Dr. John R. Vokey
Sent: Monday, November 08, 2004 10:56 PM
To: r-help at stat.math.ethz.ch
Subject: [R] no doubt a dumb question, but..

Yes, I am a newbie at R, but it is not the complex commands in R that
have me baffled, but simple data commands.  For example, why does
something like:

 > plot(Girth ~ Height)

*not* work after a command that allegedly loads the data:

 > data(trees)

with the error message:

Error in eval(expr, envir, enclos) : Object "Girth" not found

but does work after the command:

 > attach(trees)


There are 10 kinds of people:  those who understand binary, and those
who don't

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