rvmapply {rv} | R Documentation |
rvmapply
is the rv-compatible version of mapply
.
It repeats the function FUN
for each joint draw of the
random (or constant) arguments, while allowing vectorizing.
rvmapply(FUN, ..., MoreArgs=NULL, SIMPLIFY = FALSE, USE.NAMES=TRUE, SAMPLESIZE=NULL) rvVectorize(FUN, vectorize.args = arg.names, SIMPLIFY = FALSE, USE.NAMES = TRUE, SAMPLESIZE=NULL)
FUN |
the function to apply to the simulations of X . |
MoreArgs |
Other args passed to FUN `as is' (must not be rv objects unless the function already accepts them) |
USE.NAMES |
logical; see mapply for details |
SIMPLIFY |
logical; see mapply for details |
SAMPLESIZE |
if specified, takes a (joint) sample of the simulations and processes only them. |
vectorize.args |
a character vector of arguments which should be vectorized. Defaults to all arguments to FUN. |
... |
further arguments to FUN , possibly random vectors or array. |
rvmapply
applies a given function to each
simulation (vector or array) of the given random vectors,
returning a the results as a random vector or array.
The dimensions of each joint draw are preserved.
For an example, see solve
, that returns
the distribution of the inverse of a random matrix.
Usually used in functions that implement an 'rv'-compatible routine.
For an example of a function that uses SAMPLESIZE
,
abline
.
Depends on FUN
; a random vector or array if FUN
is numeric.
If the function (FUN
) has an argument ``FUN
",
it must be specified within the list supplied to MoreArgs
.
Jouni Kerman jouni@kerman.com
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")
.