sample_seq

0th

Percentile

Sampling a random integer sequence

This function provides a very efficient way to pull an integer random sample sequence from an integer interval.

Keywords
datagen
Usage
sample_seq(low, high, length)
Arguments
low

The lower limit of the interval (inclusive).

high

The higher limit of the interval (inclusive).

length

The length of the sample.

Details

The algorithm runs in O(length) expected time, even if high-low is big. It is much faster (but of course less general) than the builtin sample function of R.

Value

An increasing numeric vector containing integers, the sample.

References

Jeffrey Scott Vitter: An Efficient Algorithm for Sequential Random Sampling, ACM Transactions on Mathematical Software, 13/1, 58--67.

Aliases
  • sample_seq
  • igraph.sample
Examples
# NOT RUN {
rs <- sample_seq(1, 100000000, 10)
rs

# }
Documentation reproduced from package igraph, version 1.2.2, License: GPL (>= 2)

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