[R] issues with identical()

From: Jean Eid <jeaneid_at_chass.utoronto.ca>
Date: Sat 21 May 2005 - 02:23:41 EST


Hi all, hope you having a nice day,

I ahve this weird results with identical (probably I am not understanding correctly what it does ...)

I have these two data frames and I issue :
> identical(temp, temp1)

[1] FALSE However, these data frames are Nx2 and when I issue:
> identical(temp[,2], temp1[,2])

[1] TRUE
> identical(temp[,1], temp1[,1])

[1] TRUE and the results from str

> str(temp)

`data.frame': 7072 obs. of 2 variables:  $ pub_id : int 10000 1000 10001 10002 10003 10004 10005 10006 10007  $ faminc90: int -2 5998 19900 43000 35000 40000 56538 61000 36000 39105
> str(temp1)

`data.frame': 7072 obs. of 2 variables:
 $ pub_id: int 10000 1000 10001 10002 10003 10004 10005 10006 10007 10008  $ faminc: int -2 5998 19900 43000 35000 40000 56538 61000 36000 39105

The question is why are the objects different. How else can I tell what is the difference

Thank You

Jean



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