generateSiberCommunity: A utility function to simulate a single community comprised...

In AndrewLJackson/SIBER: Stable Isotope Bayesian Ellipses in R

A utility function to simulate a single community comprised of groups

Description

This function simulates data for a single community by sampling from a normal distribution with different means for each group within some specified boundaries.

Usage

generateSiberCommunity(
  n.groups = 3,
  community.id = 1,
  n.obs = 30,
  mu.range = c(-1, 1, -1, 1),
  wishSigmaScale = 1
)

Arguments

n.groups	the an integer specifying the number of groups to simulate. Defaults to 3.
community.id	an integer identifying the community's ID number. Defaults to 1.
n.obs	the number of observations to draw per group.
mu.range	a vector of length 4, specifying the mix and max x and y values to sample means from. Group means are sampled from a uniform distribution within this range. The first two entries are the min and max of the x-axis, and the second two the min and max of the y-axis. Defaults to c(-1, 1, -1, 1).
wishSigmaScale	is a simple multiplier for the call to stats::rWishart() which scales the diagonal sigma matrix using wishSigmaScale * diag(2) that is ultimately passed on to generateSiberGroup.

Value

A data.frame object comprising a column of x and y data, a group identifying column and a community identifying column, all of which are numeric.

AndrewLJackson/SIBER documentation built on Oct. 21, 2023, 8:09 a.m.