[R] Request

[Spencer Graves]

"rowMeans" also works.  Alternatives can be timed using "proc.time".

Spencer Graves

ccleland at optonline.net wrote:
> Ghosh Mini <ghosh at science.unitn.it <mailto:ghosh at science.unitn.it>>
> 
>  > 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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