correlation with NA (was Re: [R] (no subject))

[Sundar Dorai-Raj]

Brett Stansfield wrote on 3/16/2005 3:54 PM:
> Dear R
> I'm trying to do a correlation matrix for some variables I have.
> Unfortunately there are some NA entries for some of the variables 
> I tried the following
> 
> cor(sleep[c("logbw", "logbrw", "SlowSleep", "ParaSleep", "loglife",
> "loggest")])
> 
> but it told me
> Error in cor(sleep[c("logbw", "logbrw", "SlowSleep", "ParaSleep", "loglife",
> : 
>         missing observations in cov/cor
> 
> How can I get R to conduct a correlation matrix for this data set??
> 
> brett

See ?cor. I think you want:

cor(sleep, use = "complete.obs") # or "pairwise.complete.obs"

(please read the posting guide, which would tell you to use an 
informative subject line and also point you to the help files)

PLEASE do read the posting guide! 
http://www.R-project.org/posting-guide.html

--sundar