vif {unmarked} | R Documentation |
Compute Variance Inflation Factors for an unmarkedFit Object.
Description
Compute the variance inflation factors (VIFs) for covariates in one level of the
model (i.e., occupancy or detection). Calculation of VIFs follows the approach
of function vif
in package car
, using the correlation matrix of
fitted model parameters.
Usage
vif(mod, type)
Arguments
mod |
An unmarked fit object. |
type |
Level of the model for which to calculate VIFs (for example,
|
Value
A named vector of variance inflation factor values for each covariate.
[Package unmarked version 1.4.1 Index]