[R] How to return/show the indexes of unusual points in boxplot?

[guox at ucalgary.ca]

Thank you very much.
But it seems that
x$out returns the values not the indexes of the  values (1,22).
-james

> boxplot returns a dataframe that has the values in it at "$out":
>
>> x <- boxplot(c(4,rnorm(20),8))
>> x
> $stats
>            [,1]
> [1,] -1.5364498
> [2,] -0.5282799
> [3,] -0.1398736
> [4,]  0.3065579
> [5,]  1.3430388
>
> $n
> [1] 22
>
> $conf
>            [,1]
> [1,] -0.4210947
> [2,]  0.1413474
>
> $out
> [1] 4 8
>
> $group
> [1] 1 1
>
> $names
> [1] "1"
>
>
>
> On Wed, Sep 9, 2009 at 3:25 PM, <guox at ucalgary.ca> wrote:
>> I am wondering if you know how to return by function or show in
>> boxplot,
>> the indexes of unusual points, such as,
>> points that are outside the box or in [Q3+1.5IQR,Max].
>> For example,
>>
>>> boxplot(c(4,rnorm(20),8))
>>
>> There are 2 unusual points 4 and 8. How to show the indexes of 4 and 8
>> in
>> the boxplot
>> or return them by function?
>>
>> Thanks,
>>
>> -james
>>
>> ______________________________________________
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
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>>
>
>
>
> --
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
>
> What is the problem that you are trying to solve?
>
>
>