palaeoSig (version 2.1-4)

make.env: Generates simulated environmental variables

Description

Simulates environmental variables used for generating species abundances. Environmental variables may be correlated, and may follow different distributions.

Usage

make.env(n, elen, emean, edistr, ecor, ndim)

Value

Matrix of environmental variables. n rows and ndim columns.

Arguments

n

Number of samples to be generated.

elen

Range of the environmental variables. Single number or vector of length ndim.

emean

Mean of the environmental variables. Single number or vector of length ndim.

edistr

Distribution of the environmental variables. Currently 'uniform' and 'Gaussian' are supported.

ecor

Correlation matrix of the environmental variables. Object can be generated with cor.mat.fun. If omitted environmental variables are not correlated.

ndim

Number of environmental variables to generate.

Author

Mathias Trachsel and Richard J. Telford

References

Minchin, P.R. (1987) Multidimensional Community Patterns: Towards a Comprehensive Model. Vegetatio, 71, 145-156. tools:::Rd_expr_doi("10.1007/BF00039167")

See Also

cor.mat.fun

Examples

env.vars <- make.env(100,
  elen = rep(100, 10), emean = rep(50, 10),
  edistr = "uniform", ndim = 10
)