compareModels: Compare Multiple SAR Models

In spacc: Fast Spatial Species Accumulation Curves

Compare Multiple SAR Models

Description

Fit all (or a subset of) asymptotic species-area models and compare them using AIC, BIC, delta-AIC, and Akaike weights.

Usage

compareModels(
  object,
  models = c("michaelis-menten", "lomolino", "asymptotic", "weibull", "logistic", "evt"),
  ...
)

Arguments

object	A spacc object.
models	Character vector of models to fit. Defaults to all six: "michaelis-menten", "lomolino", "asymptotic", "weibull", "logistic", "evt".
...	Additional arguments passed to extrapolate().

Value

An object of class spacc_model_compare containing:

table	Data frame with model comparison statistics
fits	Named list of spacc_fit objects
best_model	Name of the best model by AIC
data	Mean-curve data frame used for fitting
spacc	Original spacc object

Examples

coords <- data.frame(x = runif(50), y = runif(50))
species <- matrix(rbinom(50 * 30, 1, 0.3), nrow = 50)
sac <- spacc(species, coords)
cm <- compareModels(sac)
print(cm)

spacc documentation built on June 20, 2026, 5:07 p.m.