You need seet the FUN argument:
X <- with( FDP0D, ave( IAC, list( Key), FUN = mean))
On 5/1/08, Chip Barnaby <[EMAIL PROTECTED]> wrote:
>
> Henrique, thanks for the response. As a new
> user, I was unaware of with() and ave(), those are both very helpful.
>
> However, I don't think your method i
Henrique, thanks for the response. As a new
user, I was unaware of with() and ave(), those are both very helpful.
However, I don't think your method is quite
right. I for all rows in each Key, I want the mean( IAC) where ProfA <= 0.
To simplify the problem, I have made a subset
dataframe th
If I understand your question:
x$IAC0 <- with(x, ave(IAC, list(ProfA, Key), FUN = mean))
On Wed, Apr 30, 2008 at 3:52 PM, Chip Barnaby <[EMAIL PROTECTED]>
wrote:
> Dear all --
>
> I have a data frame containing data related to heat gain through windows.
> The general form is ...
>
> Key ProfA
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