Generate growth changes induced by environment

Generate a matrix of growth changes for different environmental conditions. This vector can be supplied to generateDataSet to introduce environmental perturbation in the dataset. Note that the effect of environmental parameters is already summed, so only one growth change is provided per species per condition.

envGrowthChanges(species, env.factors = 2, conditions = 2, strength)

Arguments

species	Number of species
env.factors	Number of environmental factors
conditions	Number of environmental conditions
strength	Strength of environmental factors

Value

Matrix of growth changes, 1 column per condition.

Examples

klemm = generateA(N=10, type="klemm", c=0.5)
#> [1] "Adjusting connectance to 0.5"
#> [1] "Initial edge number 80"
#> [1] "Initial connectance 0.777777777777778"
#> [1] "Number of edges removed 25"
#> [1] "Final connectance 0.5"
#> [1] "Final connectance: 0.5"
#> [1] "Initial edge number 55"
#> [1] "Initial connectance 0.5"
#> [1] "Number of negative edges already present: 10"
#> [1] "Converting 18 edges into negative edges"
#> [1] "Final connectance: 0.5"
#> [1] "Final arc number (excluding self-arcs) 45"
#> [1] "Final negative arc number (excluding self-arcs) 18"
#> [1] "PEP: 60"
env = envGrowthChanges(species = 10, env.factors=2, conditions=2, strength=0.5)
dataset = generateDataSet(100, klemm, env.matrix = env, perturb.count = c(50, 50))
#> Error in env.matrix[1, ]: incorrect number of dimensions