size of the middle interval or the quantile range of the interval
one.sided
logical, FALSE if two-sided interval is desired
left
logical, indicating if the left one-sided interval is desired
Value
For two-sided intervals,
an array of numbers of dimension c(2,length(x)),
for one-sided intervals,
a vector of the same length as x.
Details
If interval is of length two or more, the return
value will be the quantiles given by range(interval).
References
Kerman, Jouni and Gelman, Andrew. Manipulating and Summarizing Posterior Simulations
Using Random Variable Objects. Technical report, Columbia University, New York.