[R] how to ignore "NA" or replace it by another value

Berton Gunter gunter.berton at gene.com
Thu Sep 21 20:59:34 CEST 2006

Most R functions have arguments of the form "na.action" or "na.rm" that
allow you to specify how you treat NA's. In general, it's not a good idea to
replace NA's with numbers.

See also ?na.omit, ?na.action.

-- Bert Gunter
Genentech Non-Clinical Statistics
South San Francisco, CA
"The business of the statistician is to catalyze the scientific learning
process."  - George E. P. Box

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of Thomas Preuth
> Sent: Thursday, September 21, 2006 10:59 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] how to ignore "NA" or replace it by another value
> Hello,
> I`m a newbie to R so maybe this question is boring, but I 
> have a large 
> table with several empty missing values, which come out as 
> "NA". How can 
> i ignore them or replace them by another number?
> Greetings, Thomas
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