Ghosh Mini <[EMAIL PROTECTED]>
> Is it possible to find the mean of some rows (of some table) and
> to put it in new table.
Maybe you want something like this:
apply(mydata[, c("x", "y", "z")], 2, function(x){tapply(x, list(mydata$date), mean, na.rm=TRUE)})
hope this helps,
Chuck Cleland
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