On Tue, May 08, 2012 at 02:50:47PM -0500, Jeff wrote:
>
> ...still new to R and trying to figure this one out.
>
> I have a number of variables x, y, z, etc. in a data frame.
>
> Each contains a 2 digit year (e.g., 80, 81, 82) representing the
> first year that something occurred. Each variable
It's neater if you use dput() to give your data rather than just
copying it into the email, but anyway:
> testdata <- read.table("clipboard", header=TRUE)
> apply(testdata, 1, function(x)if(all(x == 0)) {0} else {min(x[x > 0])})
[1] 80 76 86 0
Sarah
On Tue, May 8, 2012 at 3:50 PM, Jeff wrote:
...still new to R and trying to figure this one out.
I have a number of variables x, y, z, etc. in a data frame.
Each contains a 2 digit year (e.g., 80, 81, 82) representing the
first year that something occurred. Each variable represents a
different type of event.
If the event did not occu
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