[R] mean calculations from a dframe column

[David McPearson]

On Sun, 13 Apr 2014 05:01:40 -0700 (PDT) "andre.zacharia at gmail.com"
<andre.zacharia at gmail.com> wrote

> Thank you very much!!!!!!
> 
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>  *De :* arun kirshna [via R]
> *Envoyé :* 13 avril 2014 11:23
> *À :* andre.zacharia at gmail.com
> *Objet :* Re: mean calculations from a dframe column
> 
> Hi André,
> 
> Your codes were missing in some information. If your code looks like this:
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> Mean <- apply(a, 2, mean, na.rm = TRUE) 
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Andre,

Just for future reference, have a look at
?colMeans
"These functions are equivalent to use of apply with FUN = mean or FUN = sum
with appropriate margins, but are a lot faster."

Cheers,
D.

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