quantile.lvec: Calculate the quantiles of an lvec
In ldat: Large Data Sets

Calculate the quantiles of an lvec

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

`x`	an object of type `lvec`.
`probs`	a numeric vector with probabilities ([0,1]).
`names`	add names to the result vector.
`na.rm`	remove missing values before calculating the quantiles
`true_probs`	add an attribute with the probabilities at the chosen pivots.
`...`	ignored.

This function uses a more simple method than that used by the regular quantile method. It sorts the vector (using partial_sort for speed) and selects elements from x that correspond to the given probabilities. For example, when x has length of 11 and prob equal to 0.5, it selects the 6th element from the (partially) sorted x. For large enough vectors this is a reasonable approach.