[R] error with princomp

[Bill Venables]

At 01:08 PM 5/20/00 -0400, Faheem Mitha wrote:
>
>I now have another question. I am trying to use princomp with a data frame
>of size (2061,98) so quite large. I successfully applied princomp in Splus
>to it, but the R version exits with the following incomprehensible error:
>
>Error in if (symmetric) { : missing value where logical needed
>
>if (symmetric) does not appear in the code for princomp so I am flummoxed. 

Did traceback() say it came from princomp?  

Did you use traceback() at all?

Do you know about traceback()?

Don't worry if the answer to all three questions is a shrug - many users
are like that, but it really is a fundamental tool for errors like this and
I recommend it to all.

traceback() would have told you that the error is not in princomp() but in
eigen(), the workhorse that princomp() uses.  That has to be a clue.  Have
you looked at the code for eigen()?

Bill Venables.
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