[R] Fwd: Percentiles/Quantiles with Weighting

Dieter Menne dieter.menne at menne-biomed.de
Wed Feb 18 07:59:53 CET 2009


Stavros Macrakis <macrakis <at> alum.mit.edu> writes:

> 
> Some minor improvements and corrections below
> 
> # Simple weighted quantile
> #
> # v  A vector of sortable observations
> # w A numeric vector of positive weights
> # p  The quantile 0<=p<=1
> #
> # Nothing fancy: no interpolation etc.; NA cases not thought through
> 
>  wquantile <- function(v,w=rep(1,length(v)),p=.5)

You could compare it with wtd.quantile in Hmisc.

Dieter




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