Export a distributional SEM as Graphviz DOT

as_dot() renders the component-labelled structural graph as a Graphviz DOT string: one edge per typed edge (from -> to), with the distributional component (mu, sigma, zi, ...) as the edge label. Non-mean paths are dashed and greyed so a sigma / zi arrow reads differently from a mean arrow. Unlike as_lavaan(), DOT keeps every component path — nothing is dropped.

Usage

as_dot(object, ...)

# S3 method for class 'drm_sem'
as_dot(object, ...)

# S3 method for class 'drm_dag'
as_dot(object, ...)

Arguments

object

A drm_sem or a drm_dag.

...

Unused.

Value

A length-1 character string of class drm_dot (its print method cat()s the DOT source). Pipe it to Graphviz (dot -Tpng) or DiagrammeR::grViz() to render.

See also

as_lavaan(), plot.drm_sem().

Examples

dag <- drm_dag(size ~ temp, abundance ~ size + temp)
as_dot(dag)
#> digraph drmSEM {
#>   rankdir=LR;
#>   node [shape=box, style=rounded];
#>   "size";
#>   "abundance";
#>   "temp";
#>   "temp" -> "size" [label="mu"];
#>   "size" -> "abundance" [label="mu"];
#>   "temp" -> "abundance" [label="mu"];
#> }