transformprn: Permanent random number transformation

In prnsamplr: Permanent Random Number Sampling

Permanent random number transformation

Description

Transformation of the permanent random numbers used in the sampling procedure, to control the overlap between samples, and thus control the sample coordination. The method used is specified in Lindblom and Teterukovsky (2007).

Usage

transformprn(frame, prn, direction, start)

Arguments

frame	Data frame (or data.table or tibble) containing the elements to sample from.
prn	Variable in frame containing the permanent random numbers.
direction	Direction for the enumeration. "U" or "R" for upwards, or equivalently to the right on the real-number line. "D" or "L" for downwards, or equivalently to the left on the real-number line.
start	Starting point for the transformation. For SRS this corresponds to the point at which one wants to start sampling.

Value

A copy of the input data frame with the permanent random numbers transformed according to specification, along with the numeric variable prn.old containing the non-transformed permanent random numbers.

References

Lindblom, A. and Teterukovsky, A. (2007). "Coordination of Stratified Pareto pps Samples and Stratified Simple Random Samples at Statistics Sweden." In Papers presented at the ICES-III, June 18-21, 2007, Montreal, Quebec, Canada.

See Also

prnsamplr, samp, srs, pps, ExampleData

Examples

dfOut <- transformprn(
  frame = ExampleData,
  prn = ~rands,
  direction = "U",
  start = 0.2
)

prnsamplr documentation built on April 3, 2025, 7:35 p.m.