There was an error in the line below. It should have been the following (i.e.
the ix in extra[ix] was missing):
sleep$newcol <-
with(sleep, ave(1:nrow(sleep), group, FUN = function(ix)
extra[ix][b[ix][1]]))
On Mon, Mar 2, 2009 at 8:01 AM, Gabor Grothendieck
wrote:
> Try performing ave over
Try performing ave over the indexes rather than over extra itself:
sleep$newcol <-
with(sleep, ave(1:nrow(sleep), group, FUN = function(ix) extra[b[ix][1]]))
On Mon, Mar 2, 2009 at 4:28 AM, Patrick Hausmann
wrote:
> Dear list,
>
> # I have a DF like this:
> sleep$b <- c(rep(8,10), rep(9,10))
Patrick Hausmann uni-bremen.de> writes:
> # I have a DF like this:
> sleep$b <- c(rep(8,10), rep(9,10))
> sleep$me <- with(sleep, ave(extra, group, FUN = mean))
> sleep
>
> # I would like to create a new variable
> # holding the b-th value of group 1 and 2.
>
> # This is not what I want, it
Dear list,
# I have a DF like this:
sleep$b <- c(rep(8,10), rep(9,10))
sleep$me <- with(sleep, ave(extra, group, FUN = mean))
sleep
# I would like to create a new variable
# holding the b-th value of group 1 and 2.
# This is not what I want, it takes always the '8' from group '1'
# and not t
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