runique {ff} | R Documentation |
Sampling unique indices
Description
The function runique(size, total)
gives the same output as sample(total, size, replace = FALSE)
considering total
as an integer. This function is preferable over sample
when taking a small sample of a large population.
Usage
runique(size, total)
Arguments
size |
non-negative integer giving the number of items to choose. |
total |
the size of the population as a positive integer, i.e. the length n in 1:n over which to sample. |
See Also
sample
Examples
seqpack(c(1:5,4,2,seq(2,20,4)))
[Package
ff version 1.0-1
Index]