  no,the id is  variable of a table,such as:
  treatment id  age response
    low         1   50   20
    low         1   60   30
    high        5   50   30
    high        5   60  40

.......

I want to rearranage the table according the id (increasing),since id is not
strictly from 1~n,it is in increasing order but sometime jump through many
number like 1 1 5 5,I like them to be 1 1 2 2~



2008/6/4 Erik Iverson <iverson@biostat.wisc.edu>:

> Are these the ranks of the data?
>
> help.search("rank")
>
>
>
> Manli Yan wrote:
>
>>    id<-c(1,1,1,1,3,3,3,7,7,7,7,11,11,11........)
>>
>> how to sort  this kind of data to
>>   id:(1,1,1,1,2,2,2,3,3,3,3,4,4,4.........)
>>
>> thanks~
>>
>>        [[alternative HTML version deleted]]
>>
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>>
>

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