[R] Retrieving locations of element of a vector or matrix

Henrique Dallazuanna wwwhsd at gmail.com
Mon Mar 31 16:23:18 CEST 2008


I think that you can use:

x <- sample(1:20, 10)
head(sort(x), 5) #First 5 minimum values
head(sort(x, decreasing = TRUE), 5) #First 5 maximum values

On 31/03/2008, Yemi Oyeyemi <gmoyeyemi at yahoo.com> wrote:
> Hello all,
>   I have a problem of getting the locations of elements in a vector or matrix. I know one can use the command "which.min" or which.max" to get the location of minimum or maximum values in a vector. But is there any command to get the first k minimum values or maximum values in a vector.
>   Thanks
>
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O



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