pomp (version 0.38-2)

sobol: Sobol' low-discrepancy sequence

Description

Generate a data-frame containing a Sobol' low-discrepancy sequence.

Usage

sobol(vars, n)
sobol.design(lower, upper, nseq)

Arguments

vars

Named list of ranges of variables.

lower,upper

named numeric vectors giving the lower and upper bounds of the ranges, respectively.

n,nseq

Number of vectors requested.

Value

• sobol
  Returns a data frame with n observations of the variables in vars.
• sobol.design
  Returns a data frame with nseq observations of the variables over the range specified.

References

W. H. Press, S. A. Teukolsky, W. T. Vetterling, & B. P. Flannery, Numerical Recipes in C, Cambridge University Press, 1992

See Also

slice.design, profile.design

Examples

plot(sobol(vars=list(a=c(0,1),b=c(100,200)),100))
plot(sobol.design(lower=c(a=0,b=100),upper=c(b=200,a=1),100))