transformprn

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).

Survey sampling using permanent random numbers (PRN's). A solution to the
problem of unknown overlap between survey samples, which leads to a low
precision in estimates when the survey is repeated or combined with other
surveys. The PRN solution is to supply the U(0, 1) random numbers to the
sampling procedure, instead of having the sampling procedure generate them.
In Lindblom (2014) <doi:10.2478/jos-2014-0047>, and therein cited articles,
it is shown how this is carried out and how it improves the estimates. This
package supports two common fixed-size sampling procedures (simple random
sampling and probability-proportional-to-size sampling) and includes a
function for transforming the PRN's in order to control the sample overlap.

Kira Gylling

prnsamplr

Permanent Random Number Sampling

transformprn function

<dl> <dt>df</dt>
<dd>Data frame containing the elements to sample from.</dd> <dt>prn</dt>
<dd>Variable in <code>df</code> containing the permanent random numbers.</dd> <dt>direction</dt>
<dd>"U" or "R" for upwards, or to the right on the real-number line. "D" or "L" for downwards, or to the left on the real-number line.</dd> <dt>start</dt>
<dd>Starting point for the transformation.</dd></dl>

Arguments

Permanent random number transformation — transformprn

<dl>

 <dt>df</dt>
<dd>Data frame containing the elements to sample from.</dd>

 <dt>prn</dt>
<dd>Variable in <code>df</code> containing the permanent random numbers.</dd>

 <dt>direction</dt>
<dd>"U" or "R" for upwards, or to the right on the real-number line. "D" or "L" for downwards, or to the left on the real-number line.</dd>

 <dt>start</dt>
<dd>Starting point for the transformation.</dd>

</dl>

transformprn: Permanent random number transformation

Description

Usage

Value

Arguments

References

See Also

Examples