ramPathBridge

We rewrite of RAMpath software developed by John McArdle and Steven Boker as an R package. In addition to performing regular SEM analysis through the R package lavaan, RAMpath has unique features.  First, it can generate path diagrams according to a given model. Second, it can display path tracing rules through path diagrams and decompose total effects into their respective direct and indirect effects as well as decompose variance and covariance into individual bridges. Furthermore, RAMpath can fit dynamic system models automatically based on latent change scores and generate vector field plots based upon results obtained from a bivariate dynamic system. Starting version 0.4, RAMpath can conduct power analysis for both univariate and bivariate latent change score models.

Johnny Zhang

RAMpath

Structural Equation Modeling Using the Reticular Action Model
(RAM) Notation

ramPathBridge function

<dl> <dt>rammatrix</dt>
<dd>RAM matrices</dd> <dt>allbridge</dt>
<dd>Generate all bridges</dd> <dt>indirect</dt>
<dd>Generate all indirect effects</dd></dl>

Arguments

Generate path and bridges — ramPathBridge

<dl>

 <dt>rammatrix</dt>
<dd>RAM matrices</dd>

 <dt>allbridge</dt>
<dd>Generate all bridges</dd>

 <dt>indirect</dt>
<dd>Generate all indirect effects</dd>

</dl>

ramPathBridge: Generate path and bridges

Description

Usage

Arguments