Max,
If you read my message closely,  you'll see I'm indicating that the check error "may" explain why  carat 4.15 _is not available in CRAN binaries_. Because of this (not having the latest version) I suspect varImp is returning the error I detailed. 

Can you provide information as to why 4.15 is not available? That would be useful.

Also, as far a reproducible example is concerned, I noted that the example in bagEarth produces the same error as my original problem (i.e. I can reproduce the error on my machine with that code/data which is also available to others). Again, a more careful read of my original email would have made that clear.

Thanks,

--- On Mon, 5/18/09, Max Kuhn <mxkuhn@gmail.com> wrote:

From: Max Kuhn <mxkuhn@gmail.com>
Subject: Re: [R] bagged importance estimates in earth problem
To: "Joseph Retzer" <joe_retzer@yahoo.com>
Cc: gavin.simpson@ucl.ac.uk, "R help" <r-help@stat.math.ethz.ch>
Date: Monday, May 18, 2009, 12:08 PM

Joe,

On Mon, May 18, 2009 at 11:01 AM, Joseph Retzer <joe_retzer@yahoo.com> wrote:
> Thanks for your response Gavin. I get the same error as I noted before when running the example from bagEarth.
>
> earth and caret are the most recent versions (on the MAC) available on CRAN binaries, 2.0-5 and 3.45 respectively.

That is probably your problem. caret is at 4.15 and earth is now at
2.3-2. caret 3.45 was released on 2008-10-17 and many changes have
been made to both packages since then.

> I see that the CRAN checks for caret lists an error status for version 4.15  r-release-macosx-ix86, which is probably why it is not available in binary form. I also suspect, but am not sure, that this is why varImp fails.

No, not at all true. I build it on OS X and R-Forge checks it every
night. Please don't extrapolate, especially if you haven't sent a
reproducible example.

Max



      
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