invasion_signal: Compute phylogenetic signal and baseline invasion model

In invasible: Predicting Invasion Probabilities from Phylogenetic Data and Species Traits

Compute phylogenetic signal and baseline invasion model

Description

This function must be run before all prediction/evaluation steps.

Usage

invasion_signal(prepared)

Arguments

prepared

Output of prepare_invasible() #'

Details

1. Computes Fritz & Purvis D statistic

2. Fits phylogenetic logistic regression

3. Extracts phylogenetic dependence parameter (alpha)

4. Returns an "invasible_signal" object for prediction functions

Value

An object of class invasible_signal, a list containing:

phylo_model

predictors

prepared

tree

D

p_random

,

p_brownian

alpha

Examples

species_list <- fish_beginning_with_E
prep <- prepare_invasible(species_list)
signal <- invasion_signal(prep)
signal$D
signal$p_random

invasible documentation built on Oct. 8, 2026, 5:07 p.m.