make.env {palaeoSig} | R Documentation |
Generates environmental variables
Description
Generates 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)
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 supplied by user. Object generated by |
ndim |
Number of environmental variables to generate. |
Value
Matrix of environmental variables. n rows and ndim columns.
Author(s)
Mathias Trachsel and Richard J. Telford
References
Minchin, P.R. (1987) Multidimensional Community Patterns: Towards a Comprehensive Model. Vegetatio, 71, 145-156.
See Also
Examples
env.vars <- make.env(100,elen =rep(100,10),emean = rep(50,10), edistr ='uniform',ndim = 10)