dot_graph: Generate a dot graph from various SEMinR models

In seminr: Building and Estimating Structural Equation Models

Generate a dot graph from various SEMinR models

Description

With the help of the DiagrammeR package this dot graph can then be plotted in various in RMarkdown, shiny, and other contexts. Depending on the type of model, different parameters can be used.

For a full description of parameters for lavaan models see semPaths method in the semPlot package.

Usage

dot_graph(model, title = "", theme = NULL, ...)

## S3 method for class 'cfa_model'
dot_graph(
  model,
  title = "",
  theme = NULL,
  what = "std",
  whatLabels = "std",
  ...
)

## S3 method for class 'cbsem_model'
dot_graph(
  model,
  title = "",
  theme = NULL,
  what = "std",
  whatLabels = "std",
  ...
)

## S3 method for class 'measurement_model'
dot_graph(model, title = "", theme = NULL, ...)

## S3 method for class 'structural_model'
dot_graph(model, title = "", theme = NULL, ...)

## S3 method for class 'specified_model'
dot_graph(
  model,
  title = "",
  theme = NULL,
  measurement_only = FALSE,
  structure_only = FALSE,
  ...
)

## S3 method for class 'boot_seminr_model'
dot_graph(
  model,
  title = "",
  theme = NULL,
  measurement_only = FALSE,
  structure_only = FALSE,
  ...
)

## S3 method for class 'pls_model'
dot_graph(
  model,
  title = "",
  theme = NULL,
  measurement_only = FALSE,
  structure_only = FALSE,
  ...
)

Arguments

model	Model created with seminr.
title	An optional title for the plot
theme	Theme created with seminr_theme_create.
...	Unused
what	The metric to use for edges ("path", "est", "std", "eq", "col")
whatLabels	The metric to use for edge labels
measurement_only	Plot only measurement part
structure_only	Plot only structure part

Details

Current limitations: - Only plots PLS Models - no higher order constructs

Value

The path model as a formatted string in dot language.

Examples

mobi <- mobi

#seminr syntax for creating measurement model
mobi_mm <- constructs(
             reflective("Image",        multi_items("IMAG", 1:5)),
             reflective("Expectation",  multi_items("CUEX", 1:3)),
             reflective("Quality",      multi_items("PERQ", 1:7)),
             reflective("Value",        multi_items("PERV", 1:2)),
             reflective("Satisfaction", multi_items("CUSA", 1:3)),
             reflective("Complaints",   single_item("CUSCO")),
             reflective("Loyalty",      multi_items("CUSL", 1:3))
           )
#seminr syntax for creating structural model
mobi_sm <- relationships(
  paths(from = "Image",        to = c("Expectation", "Satisfaction", "Loyalty")),
  paths(from = "Expectation",  to = c("Quality", "Value", "Satisfaction")),
  paths(from = "Quality",      to = c("Value", "Satisfaction")),
  paths(from = "Value",        to = c("Satisfaction")),
  paths(from = "Satisfaction", to = c("Complaints", "Loyalty")),
  paths(from = "Complaints",   to = "Loyalty")
)

mobi_pls <- estimate_pls(data = mobi,
                         measurement_model = mobi_mm,
                         structural_model = mobi_sm)

# adapt nboot for better results
mobi_boot <- bootstrap_model(mobi_pls, nboot = 20, cores = 1)
# generate dot-Notation
res <- dot_graph(mobi_pls, title = "PLS-Model plot")

## Not run: 
DiagrammeR::grViz(res)
## End(Not run)

# generate dot-Notation
res <- dot_graph(mobi_boot, title = "Bootstrapped PLS-Model plot")

## Not run: 
DiagrammeR::grViz(res)
## End(Not run)

# - - - - - - - - - - - - - - - -
# Example for plotting a measurement model
mobi_mm <- constructs(
             reflective("Image",        multi_items("IMAG", 1:5)),
             reflective("Expectation",  multi_items("CUEX", 1:3)),
             reflective("Quality",      multi_items("PERQ", 1:7)),
             reflective("Value",        multi_items("PERV", 1:2)),
             reflective("Satisfaction", multi_items("CUSA", 1:3)),
             reflective("Complaints",   single_item("CUSCO")),
             reflective("Loyalty",      multi_items("CUSL", 1:3))
           )
dot_graph(mobi_mm, title = "Preview measurement model")
# - - - - - - - - - - - - - - - -
# Example for plotting a structural model
mobi_sm <- relationships(
  paths(from = "Image",        to = c("Expectation", "Satisfaction", "Loyalty")),
  paths(from = "Expectation",  to = c("Quality", "Value", "Satisfaction")),
  paths(from = "Quality",      to = c("Value", "Satisfaction")),
  paths(from = "Value",        to = c("Satisfaction")),
  paths(from = "Satisfaction", to = c("Complaints", "Loyalty")),
  paths(from = "Complaints",   to = "Loyalty")
)
res <- dot_graph(mobi_sm, title = "Preview structural model")

## Not run: 
DiagrammeR::grViz(res)

## End(Not run)

seminr documentation built on Oct. 14, 2024, 1:07 a.m.