[R] Unique.data.frame...still getting duplicates

Alec Stephenson astephen at efs.mq.edu.au
Fri Jun 25 04:45:26 CEST 2004

will do. Your unique(data[ID,]) removes duplicated rows in data[ID,],
assuming the object ID exists.

Alec Stephenson                                               
Department of Statistics
Macquarie University
NSW 2109, Australia 

>>> "F Z" <gerifalte28 at hotmail.com> 06/25/04 12:12pm >>>
Hi there

I have a data frame with about 65,000 rows and 8 variables.  I am
trying to 
get rid of the double entries of a factor variable "ID" so I can get a

unique observation for each ID

I tried:

>dupl_unique.data.frame(data[ID,]) #I obtain a data frame with 21,547 
>observations..so far so good, but then when I check for duplicates

  6836 14711

Meaning that I am still getting 14,711 duplicates!

I tried changing the ID type to integer and repeated the process but I
dentical results....what am I missing?


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