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

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.

Version: 0.5.1
Depends: R (≥ 2.0), lavaan, ellipse, MASS
Published: 2023-08-27
DOI: 10.32614/CRAN.package.RAMpath
Author: Zhiyong Zhang, Jack McArdle, Aki Hamagami, & Kevin Grimm
Maintainer: Zhiyong Zhang <zzhang4 at nd.edu>
License: GPL-2
URL: https://nd.psychstat.org
NeedsCompilation: no
CRAN checks: RAMpath results

Documentation:

Reference manual: RAMpath.pdf

Downloads:

Package source: RAMpath_0.5.1.tar.gz
Windows binaries: r-devel: RAMpath_0.5.1.zip, r-release: RAMpath_0.5.1.zip, r-oldrel: RAMpath_0.5.1.zip
macOS binaries: r-release (arm64): RAMpath_0.5.1.tgz, r-oldrel (arm64): RAMpath_0.5.1.tgz, r-release (x86_64): RAMpath_0.5.1.tgz, r-oldrel (x86_64): RAMpath_0.5.1.tgz
Old sources: RAMpath archive

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.