[R] does column exist?

[apjaworski@mmm.com]

There may be a simpler way, but this

is.na(match("X", names(df)))

should return TRUE if the column name exists and FALSE otherwise.

Cheers,

Andy

__________________________________
Andy Jaworski
518-1-01
Process Laboratory
3M Corporate Research Laboratory
-----
E-mail: apjaworski at mmm.com
Tel:  (651) 733-6092
Fax:  (651) 736-3122


                                                                           
             Omar Lakkis                                                   
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How do I test if a data.frame has a column named X?
exists(o) checks if the object exists or not, I want to test if a
data.frame object (df) has a column names(X), something like:
exists(df$X)

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