ecodist (version 1.1.0)

corgen: Generate correlated data

Description

Generate correlated data vectors of a given length.

Usage

corgen(len, r, population = FALSE, epsilon = 0)

Arguments

len

Length of data vectors.

r

Correlation between data vectors.

population

TRUE for vectors drawn from two populations with correlation r, otherwise r is the sample correlation.

epsilon

If epsilon = 0, it has no effect, otherwise the sampling process is repeated until the sample correlation is within epsilon of r. This option allows the production of exactly-correlated data, within the limits of epsilon.

Value

• If it is a LIST, use
• x
  First data vector.
• y
  Second data vector.
• ...

Details

This function is more sophisticated that the corgen function available in the stats package.

See Also

~~objects to See Also as help, ~~~

Examples

# create two random variables of length 100 with correlation 
# of 0.10 +/- 0.00001
corgen(100, .1, epsilon=0.00001)