[R] using complete.cases() with nested factors

2008-09-04 Thread Andrew Barr
Hello, This maybe a newbie question. I have a dataframe that looks like the sample at the bottom of the email. I have monthly precipitation data from several sites over several years. For each site, I need to extract years that have a complete series of 12 monthly precipitation values, while

Re: [R] using complete.cases() with nested factors

2008-09-04 Thread Ken Knoblauch
Andrew Barr wabarr at gmail.com writes: This maybe a newbie question. I have a dataframe that looks like the sample at the bottom of the email. I have monthly precipitation data from several sites over several years. For each site, I need to extract years that have a complete series of

Re: [R] using complete.cases() with nested factors

2008-09-04 Thread hadley wickham
On Thu, Sep 4, 2008 at 4:19 PM, Ken Knoblauch [EMAIL PROTECTED] wrote: Andrew Barr wabarr at gmail.com writes: This maybe a newbie question. I have a dataframe that looks like the sample at the bottom of the email. I have monthly precipitation data from several sites over several years.

Re: [R] using complete.cases() with nested factors

2008-09-04 Thread Gabor Grothendieck
See ?subset and ?ave and try this: subset(DF, ave(year, year, FUN = length) == 12) On Thu, Sep 4, 2008 at 5:04 PM, Andrew Barr [EMAIL PROTECTED] wrote: Hello, This maybe a newbie question. I have a dataframe that looks like the sample at the bottom of the email. I have monthly