SimDesign (version 2.20.0)

expandReplications: Expand the replications to match expandDesign

Description

Expands the replication budget to match the expandDesign structure.

Usage

expandReplications(replications, repeat_conditions)

Value

an integer vector of the replication budget matching the expanded structure in expandDesign

Arguments

replications

number of replications. Can be a scalar to reflect the same replications overall, or a vector of unequal replication bugets.

repeat_conditions

integer vector used to repeat each design row the specified number of times. Can either be a single integer, which repeats each row this many times, or an integer vector equal to the number of total rows in the created object.

Author

Phil Chalmers

References

Chalmers, R. P., & Adkins, M. C. (2020). Writing Effective and Reliable Monte Carlo Simulations with the SimDesign Package. The Quantitative Methods for Psychology, 16(4), 248-280. tools:::Rd_expr_doi("10.20982/tqmp.16.4.p248")

Sigal, M. J., & Chalmers, R. P. (2016). Play it again: Teaching statistics with Monte Carlo simulation. Journal of Statistics Education, 24(3), 136-156. tools:::Rd_expr_doi("10.1080/10691898.2016.1246953")

See Also

expandDesign

Examples

if (FALSE) {

# repeat each row 4 times (for cluster computing)
Design <- createDesign(N = c(10, 20),
                       SD.equal = c(TRUE, FALSE))
Design4 <- expandDesign(Design, 4)
Design4

# match the replication budget. Target is 1000 replications
(replications4 <- expandReplications(1000, 4))

# hence, evaluate each row in Design4 250 times
cbind(Design4, replications4)

####
# Unequal Design intensities

Design24 <- createDesign(SD.equal = c(TRUE, FALSE),
                       N = c(10, 100, 1000))
# split first two conditions into half rows, next two conditions into quarters,
#  while N=1000 condition into tenths
expand <- c(2,2,4,4,10,10)
eDesign <- expandDesign(Design, expand)
eDesign

# target replications is R=1000 per condition
(replications24 <- expandReplications(1000, expand))
cbind(eDesign, replications24)

}