samwr Sampling without replacement

## Syntax

    s = samwr(sizam, numsamp, X)

## Arguments

sizam

  integer. Size of a sample. It must be lower than or equal to the size of `X`.

numsamp

  integer. Number of samples to be extracted.

X

  column vector. It contains the population.

s

  matrix of size `sizsam * numsamp`. It contains `numsamp` random samples (the columns) each of `sizam` extractions without replacement from `X`.

## Description

Gives samples without replacement from a column vector.

## Random number generator

`samwr` is based on grand for generating the random samples. Use `grand("setsd", seed)` to change the seed for `samwr`.

                seed = getdate("s");
                grand("setsd", seed); //sets the seed to current date

                seed = 0;
                grand("setsd", seed); //sets the seed to default value

## Examples

    a = [0.33 1.24 2.1 1.03]
    s = samwr(4, 12, a)

## See also

- sample
- samplef
- grand