Package index • umg

Building a diagram by hand

Typed vertices, edges, and plates, assembled and validated into a UMG object.

umg_model(): Assemble and validate a Unified Model Graph
umg_node(): Create a UMG vertex
umg_edge(): Create a UMG edge
umg_plate(): Create a UMG plate

Motif builders: measurement

One-line builders for common measurement models.

umg_factor(): Reflective factor (measurement) motif
umg_bifactor(): Bifactor measurement motif
umg_secondorder(): Second-order factor motif
umg_esem(): Exploratory structural equation model motif
umg_formative(): Formative (composite) measurement motif
umg_mimic(): MIMIC (multiple-indicator multiple-cause) motif

Motif builders: item response and latent classes

umg_irt(): Item response theory motif (crossed persons x items)
umg_dcm(): Diagnostic classification model (DCM) motif
umg_lca(): Latent class motif
umg_mixture(): Add a finite-mixture wrapper to an existing UMG

Motif builders: structural, longitudinal, and network models

umg_sem(): General structural equation model builder
umg_mediation(): Mediation motif
umg_growth(): Latent growth-curve motif
umg_riclpm(): Random-intercept cross-lagged panel model (RI-CLPM) motif
umg_network(): Undirected network (Gaussian graphical model) motif

From fitted model objects

Build a UMG from a model specified or fitted in another package.

umg_from_OpenMx(): Build a UMG from an OpenMx RAM model
umg_from_blavaan(): Build a UMG from a blavaan model
umg_from_brms(): Build a UMG from a brms model
umg_from_lavaan(): Build a UMG from a lavaan model
umg_from_lmer(): Build a UMG from an lme4 formula
umg_from_mirt(): Build a UMG from a fitted mirt model
umg_from_qgraph(): Build a UMG from a qgraph object or weighted adjacency matrix

Reading a diagram

Well-formedness, identification, and the conditional independencies a diagram implies.

umg_validate(): Validate well-formedness of a UMG
umg_identify(): Identification summary for a UMG
umg_check_scaling(): Check latent-variable scaling marks
umg_count_parameters(): Graphical parameter count (t-rule)
umg_labelswitching(): Flag label-switching symmetry in mixtures
umg_dsep(): Test d-separation in a UMG
umg_implied_ci(): Enumerate basis-set implied conditional independencies
print(<umg_identification>): Print a UMG identification summary

Rendering and export

plot(<umg>): Plot a UMG with grid graphics
umg_ggplot() autoplot(<umg>): Render a UMG with ggplot2
umg_theme(): Construct a UMG rendering theme
umg_layout(): Compute a layered layout for a UMG
umg_save(): Save a UMG diagram to a file
umg_to_tikz(): Export a UMG as TikZ code
umg_to_dot(): Export a UMG as Graphviz DOT code
umg_render_dot(): Render a UMG through DiagrammeR (Graphviz)
umg_to_lavaan(): Generate lavaan model syntax from a UMG

Exploratory displays implied by the model

umg_eda_scaffold(): Generate exploratory display scaffolds from a UMG
umg_caterpillar(): Caterpillar (shrinkage) plot of cluster-level estimates

Inspecting a UMG object

print(<umg>): Print a Unified Model Graph
summary(<umg>) print(<summary.umg>): Summarise a UMG
as.data.frame(<umg>): Coerce a UMG to a data frame