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.
Author  Zhiyong Zhang, Jack McArdle, Aki Hamagami, & Kevin Grimm 
Date of publication  20161005 16:36:45 
Maintainer  Zhiyong Zhang <zzhang4@nd.edu> 
License  GPL2 
Version  0.4 
URL  http://nd.psychstat.org 
Package repository  View on CRAN 
Installation  Install the latest version of this package by entering the following in R:



All man pages Function index File listing
Man pages  

ex1: Example data set 1  
ex2: Example data set 2  
ex3: Example data set 3  
isNumeric: Is the input a numeric variable  
lavaan2ram: Convert lavaan output to RAM matrices  
makeBridgeList: Generate all bridges  
makePathList: Make a list of effects  
makeSpanList: Make a list of spans  
plot.lcs.power: Plot the power curve for each specified parameter  
plot.RAMpath: Plot the path diagram according to RAM path and bridges or...  
powerBLCS: Power analysis for bivariate latent change score models  
powerLCS: Power analysis for univariate latent change score models  
ram2lavaan: RAM model to lavaan model  
ramBLCS: Conduct bivariate latent change score analysis  
ramEffectSE: Sobel standard error for a given effect  
ramFit: Fit a model using lavaan based on ram input  
ramFlip: Flip the ram path  
ramIndex: To be added  
ramLCM: Conduct growth curve analysis  
ramLCS: Univariate latent change score model  
ramMatrix: Generate ram matrices based on ram input  
ramParseLavaan: lavaan to ram  
ramPathBridge: Generate path and bridges  
RAMpathpackage: RAMpath for SEM analysis  
ramReFit: Refit a model with additional paths  
ramRmOne: Internal function  
ramShowModel: Show the model using Lavvan model syntax  
ramUniquePath: Get the uniques paths  
ramVF: Generate a vector field plot based on the bivariate lcsm  
summary.RAMpath: Calculate the total and individual contribution for each path... 
Functions  

RAMpath  Man page 
RAMpathpackage  Man page 
ex1  Man page 
ex2  Man page 
ex3  Man page 
isNumeric  Man page Source code 
lavaan2ram  Man page Source code 
makeBridgeList  Man page Source code 
makePathList  Man page Source code 
makeSpanList  Man page Source code 
plot  Man page 
plot.RAMpath  Man page Source code 
plot.blcs  Man page Source code 
plot.lcs.power  Man page Source code 
powerBLCS  Man page Source code 
powerLCS  Man page Source code 
ram2lavaan  Man page Source code 
ramBLCS  Man page Source code 
ramEffectSE  Man page Source code 
ramFit  Man page Source code 
ramFlip  Man page Source code 
ramIndex  Man page Source code 
ramLCM  Man page Source code 
ramLCS  Man page Source code 
ramMatrix  Man page Source code 
ramParseLavaan  Man page Source code 
ramPathBridge  Man page Source code 
ramReFit  Man page Source code 
ramRmOne  Man page Source code 
ramShowModel  Man page Source code 
ramUniquePath  Man page Source code 
ramVF  Man page Source code 
summary  Man page 
summary.RAMpath  Man page Source code 
Files  

NAMESPACE
 
data
 
data/ex1.txt.gz
 
data/ex2.txt.gz
 
data/ex3.txt.gz
 
R
 
R/blcs.R  
R/power.R  
R/rampath.R  
R/lcm.R  
R/lavaan2ram.R  
R/se.R  
MD5
 
DESCRIPTION
 
man
 
man/ramUniquePath.Rd  
man/ex3.Rd  
man/plot.RAMpath.Rd  
man/ramReFit.Rd  
man/ramVF.Rd  
man/ramLCS.Rd  
man/ramPathBridge.Rd  
man/ramFit.Rd  
man/ramRmOne.Rd  
man/RAMpathpackage.Rd  
man/isNumeric.Rd  
man/makePathList.Rd  
man/ramIndex.Rd  
man/ex2.Rd  
man/lavaan2ram.Rd  
man/ramFlip.Rd  
man/ramBLCS.Rd  
man/ex1.Rd  
man/makeSpanList.Rd  
man/ram2lavaan.Rd  
man/makeBridgeList.Rd  
man/ramEffectSE.Rd  
man/ramLCM.Rd  
man/powerLCS.Rd  
man/plot.lcs.power.Rd  
man/ramShowModel.Rd  
man/powerBLCS.Rd  
man/ramParseLavaan.Rd  
man/summary.RAMpath.Rd  
man/ramMatrix.Rd 
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