as_interactions: as_interactions

In BEE-Univ-Grenoble/BeePODYNA:

Description

as_interactions transforms a vector in an interactions matrix object defining the positive and negative interactions between populations. The interaction is not assumed symetrical, so a population can have a different effect on a population than this latest has on the first one. The interaction of a population on itself is equal to 0. If no interaction vector is given, the default values are 0. See interactions function to create a new interaction matrix from scratch. If the object is of the type numeric, it should be a vector of numeric of length nb_pop*(nb_pop-1) giving the interaction of each population on the other one. Each interaction is a decimal ranging between -1 and 1. A positive value means a positive impact like facilitation while a negative value means a negative impact like predation, competition. The vector starts with the vector of the interactions of the first population on the other ones ranging from 2 to the last one, not including itself, and then the vector of the interactions of the second population on the others...

Usage

as_interactions(object)

## Default S3 method:
as_interactions(object)

## S3 method for class 'interactions'
as_interactions(object)

## S3 method for class 'numeric'
as_interactions(object)

Arguments

object

is an R object to transform into an interaction matrix.

Author(s)

Nicolas BARTALUCCI <[e-mail]>

Examples

  as_interactions(c(0.2,-0.5, 0.1,0.2,0.3,0.8))

BEE-Univ-Grenoble/BeePODYNA documentation built on Dec. 25, 2019, 4:49 a.m.