rv (version 2.3.1)

sims: Retrieve the Simulations of Random Vectors

Description

Returns the simulation matrix for the random variable object x.

Usage

sims(x, ...) "sims"(x, ...) "sims"(x, dimensions=FALSE, n.sims=getnsims(), ...) "sims"(x, dimensions=FALSE, ...)

Arguments

x

a random variable object

n.sims

(optional) number of simulations

dimensions

logical, try to preserve the dimensions of x

...

arguments passed on

Details

sims returns the matrix of simulations for a given random variable object x.

The first index of the matrix indicates the number of the simulation draw (``simulations are in rows'').

References

Kerman, J. and Gelman, A. (2007). Manipulating and Summarizing Posterior Simulations Using Random Variable Objects. Statistics and Computing 17:3, 235-244.

See also vignette("rv").

Examples

  setnsims(n.sims=2500)
  x <- rvnorm(24)
  dim(x) <- c(2,3,4)
  dim(sims(x))                  # 2500x24
  dim(sims(x, dimensions=TRUE)) # 2500x2x3x4