quantile.ff: quantiles

In ffbase: Basic Statistical Functions for Package 'ff'

Description

The function quantile produces quantiles corresponding to the given probabilities. The smallest observation corresponds to a probability of 0 and the largest to a probability of 1. Current implementation doesn't use the type parameter of quantile. For large ff vectors the difference between the types is (very) small. If x has been ffordered, quantile is fast, otherwise it is $n log(n)$.

Usage

## S3 method for class 'ff'
quantile(x, probs = seq(0, 1, 0.25), na.rm = FALSE, names = TRUE, ...)

Arguments

x	ff vector
probs	numeric vector of probabilities with values in [0,1].
na.rm	logical; if true, any NA and NaN's are removed from x before the quantiles are computed.
names	logical; if true, the result has a names attribute. Set to FALSE for speedup with many probs.
...	currently not used

ffbase documentation built on Feb. 27, 2021, 5:06 p.m.