calc_topological_indices: Calculate topological indices for ecological networks. The...

In lsaravia/EcoNetwork: Ecological network analyses including multiplex networks

Calculate topological indices for ecological networks. The mean trophic level and Omnivory and the Level of omnivory are calculated with the function NetIndices::TrophInd()

Description

Calculate topological indices for ecological networks. The mean trophic level and Omnivory and the Level of omnivory are calculated with the function NetIndices::TrophInd()

Usage

calc_topological_indices(ig, ncores = 0)

Arguments

ig	vector of igraph objects
ncores	number of cores used to compute in parallel, if 0 sequential processing is used.

Value

a data.frame with the following fields:

• Network: Name of the network if the list have names

• Size: Number of species

• Top: Number of top predator species

• Basal: Number of basal especies

• Omnivory: Proportion of omnivorous species

• Links: number of interactions

• LD: linkage density

• Connectance: directed Connectance

• PathLength: average path length

• Clustering: clustering coeficient

• Cannib: number of cannibalistic species

• TLmean: mean trophic level

• TLmax: maximum trophic level

• LOmnivory: Level of omnivory, quantifies mean of the variety in trophic levels of the preys of a consumer

• Components: number of weakly connected components

• Vulnerability: mean of number of consumers per prey

• VulSD: the standard deviation of normalized Vulnerability

• Generality: mean number of prey per consumer

• GenSD: the standard deviation of normalized Generality

Examples

calc_topological_indices(netData)

# Generate a test network

g <-   graph_from_literal( 1 -+ 4 -+ 7,2 -+ 5 -+7, 3-+6-+7, 7-+7, 4+-3, simplify = FALSE)

calc_topological_indices(g)

lsaravia/EcoNetwork documentation built on April 5, 2025, 1:51 p.m.