On Jun 29, 2010, at 2:54 PM, Stuart Luppescu wrote:
Hello, I have to construct 5 new columns in a data frame depending on
the value of another of the columns in the data frame. The only way I
could figure out to do this was to subset the data frame five times,
do
the variable construction, a
On Tue, 2010-06-29 at 13:59 -0500, Erik Iverson wrote:
> I'm sure there's an easier way, but it's going to be easiest to get a
> useful response if we have a reproducible, minimal example, as the
> posting guide requests. ?tapply is probably involved.
A minimal example of data? How about this:
I'm sure there's an easier way, but it's going to be easiest to get a
useful response if we have a reproducible, minimal example, as the
posting guide requests. ?tapply is probably involved.
Stuart Luppescu wrote:
Hello, I have to construct 5 new columns in a data frame depending on
the value
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