tapply(...., na.rm=TRUE)
However as I already said, I'm not sure what you did and what is the problem. Plese provide the code that did not work, possibly with a workable example, as the posting guide suggests:
"PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html";
I hope this helps in anyway, Ales Ziberna
----- Original Message ----- From: "Leonardo Lami" <[EMAIL PROTECTED]>
To: <r-help@stat.math.ethz.ch>
Sent: Friday, March 25, 2005 10:35 AM
Subject: [R] tapply and NA value
Hi,
I'm writing for a little help.
I have a dataframe with same NA value and I'd like to obtain the means of the
value of a coloumn grouped by the levels of a factor coloumn of the datframe.
I'm using the function "tapply" but I see that if only a NA value is present
the result is NA.
There is an option to have the correct result or I must use an other function?
Thanks of all Leonardo -- Leonardo Lami [EMAIL PROTECTED] www.faunalia.it Via Colombo 3 - 51010 Massa e Cozzile (PT), Italy Tel: (+39)349-1310164 GPG key @: hkp://wwwkeys.pgp.net http://www.pgp.net/wwwkeys.html https://www.biglumber.com
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______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
