identical(df[1,],df[2,]) is FALSE because of the row names. all( == ) is just a
work-around that I attempted.
Jorgen.
On Mar 11, 2013, at 02:53 , PIKAL Petr wrote:
>>
>>> df <- data.frame(x=c(1,1,NA,NA), y=c(2,2,7,7))
>>> identical(df[1,],df[2,])
>> [1] FALSE
>>> all(df[1,]==df[2,])
>> [1] TRUE
>>> all(df[3,]==df[4,])
>> [1] NA
>
> I beg your pardon, whot does row names do with the above result? What do you
> expect as a result of
>
> all(df[3,]==df[4,])
>
> Regards
> Petr
>
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