Weighted sample quantiles
Compute quantiles taking into account sample weights. The following methods are implemented:
quantileWt.default(x, weights=NULL, probs=seq(0, 1, 0.25), na.rm=TRUE, ...)
quantileWt.dataObj(x, vars, probs=seq(0, 1, 0.25), na.rm=TRUE, ...)
Additional parameters are:
weights an optional numeric vector containing sample weights.
vars a character vector of length 1 specifying a variable name that is available in the data-slot of
xand which is used for the calculation.
probs a numeric vector of probabilities with values in [0, 1].
na.rm a logical indicating whether any
NaNvalues should be removed from
xbefore the quantiles are computed. Note that the default is
TRUE, contrary to the function
a numeric vector.
for the generic function
If weights are not specified then
quantile(x, probs, na.rm=na.rm,
names=FALSE, type=1) is used for the computation.
Note probabilities outside [0, 1] cause an error.
A vector of the (weighted) sample quantiles.
Stefan Kraft and Bernhard Meindl
A basic version of this function was provided by Cedric Beguin and Beat Hulliger.
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