Here is one way:
> tmp1 <- data.frame(Species=c('setosa','virginica','versicolor'),
+ row=c(7,20,18) )
>
> tmp.iris <- iris
> tmp.iris$row <- ave(iris$Sepal.Length, iris$Species, FUN=seq_along)
>
> out.iris <- merge(tmp.iris, tmp1, by=c('Species','row'))
>
>
> out.iris
Species row Sepal.L
Hi,
Thank you for the reply. That would only work for the first ID. In
addition, the data frame that I'm trying to subset is separate from the
data frame that has the position numbers.
"failed.3" is the data frame with the position numbers that I would like
to keep. "def3" is the data frame that
Will failed.3 have each id exactly once? Or could it have multiple lines for a
given id?
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
> -Original Message-
> From: r-help-boun...@r-project.org [mailto:r-help-bounces@r-
What is wrong with
subset( failed.3, position == 2 )
?
--
Sent from my Android phone with K-9 Mail. Please excuse my brevity.
Linh Tran wrote:
Hi members, I'd like to thank you guys ahead of time for the help. I'm kind of
stuck. I have a data frame with ID and position numbers: 1> head(faile
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