lavDiag 0.1.0
- Initial CRAN release.
- Provides diagnostics and visualization tools for latent variable
models fitted with
lavaan or blavaan.
Core functionality
augment() — augments fitted models with predicted
values, residuals, SEs, and CIs (continuous, ordinal, or mixed
indicators).prepare() — constructs model-based item curves and
latent grids for continuous/ordinal indicators.lavPredict_parallel() — robust, parallel wrapper for
lavaan::lavPredict() with automatic handling of ordinal
data.
Item-level diagnostics
item_data() — extracts model-based and empirical
item-level information for plotting or inspection.item_plot() — visualizes empirical vs. model-implied
item curves, including confidence intervals.
Residual diagnostics
resid_cor() — computes residual (co)relations and
z-statistics.resid_corrplot() — visualizes residual correlations
using corrplot.resid_qq() — draws Q–Q plots of residual correlation
z-statistics.
Model summaries and
utilities
parameter_estimates() — enhanced extraction of
standardized parameter estimates with robust SEs.model_info() — extracts compact model metadata
(grouping, variables, parameterization, etc.).hopper_plot() — summarizes fit indices and modification
indices across multiple models.