testZeroInflation

a DHARMa object with simulated residuals created with <code><a rd-options="" href="/link/simulateResiduals?package=DHARMa&version=0.1.6" data-mini-rdoc="DHARMa::simulateResiduals">simulateResiduals</a></code>

simulationOutput

plot

whether to test for 'more', 'less', or 'both' more or less zeros in the observed data

alternative

This function compares the observed number of zeros with the zeros expected from simulations.

The 'DHARMa' package uses a simulation-based approach to create
readily interpretable scaled (quantile) residuals for fitted generalized linear mixed
models. Currently supported are generalized linear mixed models from 'lme4'
(classes 'lmerMod', 'glmerMod'), generalized additive models ('gam' from 'mgcv'),
'glm' (including 'negbin' from 'MASS', but excluding quasi-distributions) and 'lm' model
classes. Alternatively, externally created simulations, e.g. posterior predictive simulations
from Bayesian software such as 'JAGS', 'STAN', or 'BUGS' can be processed as well.
The resulting residuals are standardized to values between 0 and 1 and can be interpreted
as intuitively as residuals from a linear regression. The package also provides a number of
plot and test functions for typical model misspecification problems, such as
over/underdispersion, zero-inflation, and residual spatial and temporal autocorrelation.

Florian Hartig

DHARMa

Residual Diagnostics for Hierarchical (Multi-Level / Mixed)
Regression Models

testZeroInflation function

a DHARMa object with simulated residuals created with <code><a rd-options='' href='simulateResiduals'>simulateResiduals</a></code>

testZeroInflation: Tests for zero-inflation

Description

Usage

Arguments

Details

See Also