[R] removing lower and upper quantiles from an arry

[Dimitris Rizopoulos]

have a look at the help page for ?'&', try also this:

i <- 1:20
qs <- quantile(i, c(.25, 0.75))
i[i > qs[1] & i < qs[2]]


I hope it helps.

Best,
Dimitris


On 2/17/2011 11:08 AM, Maas James Dr (MED) wrote:
> I'm trying to work out the simplest way to remove the upper and lower quantiles, in this case upper and lower 25% from an array.  I can do it in two steps but when I try it in one, it fails.  Is there something simple missing from my syntax or are there other simple elegant way to accomplish this?
>
> Thanks
>
> J
>
>> i<-1:20
>> i2<- i[i<quantile(i,.75)]
>> i3<- i[i>quantile(i,.25)]
>> i4<- i[quantile(i,.25)<  i>  quantile(i,.75)]
> Error: unexpected '>' in "i4<- i[quantile(i,.25)<  i>"
>
> ===============================
> Dr. Jim Maas
> University of East Anglia
>
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-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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