rdeltanci: The deltaNCI distribution

In sylvainschmitt/ecoevosimulator: Eco-evolutionnary simulator

Description

Random generator of deltaNCI based on a proability p to be negative used in a Bernoulli distribution. Negative deltaNCI follow an exponential distribution of parameter lambda. Positive deltaNCI follow a lognormal distribution of parameters mu and sigma. Default parameters correspond to values inferred in the control and biodiversity plots of Paracou.

Usage

rdeltanci(
  NCI = rnorm(1, mean = 122.73, sd = 25.806),
  alpha = -1.32,
  beta = 0.003,
  mu = 0.749,
  sigma = 2.651,
  lambda = 0.31
)

Arguments

NCI	double. Vector of previous NCI (size of the vector determines number of generated deltaNCI).
alpha	double. Intercept for the Bernoulli distribution determining the risk to have a negative deltaNCI.
beta	double. Slope of previous NCI for the Bernoulli distribution determining the risk to have a negative deltaNCI.
mu	double. mu parameter for the lognormal distribution used for positive deltaNCI.
sigma	double. sigma parameter for the lognormal distribution used for positive deltaNCI.
lambda	double. lambda parameter for the exponential distribution used for negative deltaNCI.

Value

A vector of n generated delta nci.

Examples

rdeltanci(1)

sylvainschmitt/ecoevosimulator documentation built on Nov. 19, 2020, 8:04 a.m.