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

Description Usage Arguments Value Examples

View source: R/calcTopologicalIndices.r

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

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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:

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, quanti´Čües 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

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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 Dec. 30, 2021, 7:04 p.m.