[R] Remove rows with NA across all columns

[Bert Gunter]

Learn to use the power and flexibility of R subscripting.

## Warning:untested

apply(df,1,function(x)any(!is.na(x)))

gives TRUE for all rows that aren't all NA's.

So stick this expression into the 1st coordinate of a subscript for the df:

df[apply(df,1,function(x)any(!is.na(x))),]

Cheers,
Bert Gunter
Genentech

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of joseph
Sent: Thursday, February 14, 2008 8:53 PM
To: r-help at r-project.org
Cc: r-help at r-project.org
Subject: [R] Remove rows with NA across all columns

Hi
I have a data frame df with 3 columns.  Some rows are NA across all 3
columns. How can I remove rows with NA across all columns?
 df=data.frame(col1=c(1:3,NA,NA,4),col2=c(7:9,NA,NA,NA),col3=c(2:4,NA,NA,4))
Thanks
Joseph




 
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