| RNGStream {microsimulation} | R Documentation |
S3 class to work with RngStream objects
Description
S3 class to work with RngStream objects
Use RNGStream as an old class
With method for RNGStream S3 class
Usage
RNGStream(nextStream = TRUE, iseed = NULL)
## S3 method for class 'RNGStream'
with(data, expr, ...)
Arguments
nextStream |
whether to move to the next stream (default=TRUE) |
iseed |
set seed after changing RNG (otherwise keep the current seed) |
data |
object of type RNGStream |
expr |
expression using the RNGStream |
... |
other arguments passed to eval() |
Value
list of class RNGStream with components:
- resetRNGkind
function to reset to the previous RNG and seed
- seed
function to return the current seed
itemopenfunction to use the current seed itemclosefunction to make the current seed equal to .Random.seed itemresetStreamfunction to move back to start of stream itemresetSubStreamfunction to move back to start of sub-stream itemnextSubStreamfunction to move to next sub-stream itemnextStreamfunction to move to next stream
the value from the expression
Examples
## set up one stream
s1 <- RNGStream()
s1$open()
rnorm(1)
s1$nextSubStream()
rnorm(1)
## reset the stream
s1$resetStream()
rnorm(2)
s1$nextSubStream()
rnorm(2)
## now do with two streams
s1$resetStream()
s2 <- RNGStream()
with(s1,rnorm(1))
with(s2,rnorm(1))
s1$nextSubStream()
with(s1,rnorm(1))
## now reset the streams and take two samples each time
s1$resetStream()
s2$resetStream()
with(s1,rnorm(2))
with(s2,rnorm(2))
s1$nextSubStream()
with(s1,rnorm(2))