[R] Percentiles in R
Xavier Abulker
xavier_abulker at yahoo.fr
Tue Sep 11 17:53:18 CEST 2007
It looks like
prctile(X,p) is the same as quantile(X,p)
i.e
x<-0:100
quantile(x,0.5) is the median(x)
and
quantile(x,0.1)=10 is the value that is greater than 10% percent of the
values in X
"José Luis Aznarte M." wrote:
>
> Hi there! Still struggling to translate Matlab code into R's tsDyn
> package.
> Here is my question: Is there in R an equivalent function to Matlab's
> prctile()? To the moment I thought it was quantile(), but I just
> realized I was wrong. The definition of the Matlab function:
>
> prctile
> Percentiles of a sample
> SyntaxY = prctile(X,p)
> Description
> Y = prctile(X,p) calculates a value that is greater than p percent of
> the values in X. The values of p must lie in the interval [0 100]. For
> instance, if p = 50 then Y is the median of X
>
> Thanks!!
>
> --
> -- --
> Jose Luis Aznarte M. http://decsai.ugr.es/~jlaznarte
> Department of Computer Science and Artificial Intelligence
> Universidad de Granada Tel. +34 - 958 - 24 04 67
> GRANADA (Spain) Fax: +34 - 958 - 24 00 79
>
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> and provide commented, minimal, self-contained, reproducible code.
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>
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