# findIndResidualVar: Find indicator residual variances from factor loading matrix,... In simsem: SIMulated Structural Equation Modeling

## Description

Find indicator (measurement) residual variances from a factor loading matrix, total factor covariance matrix, and total indicator variances.

## Usage

 ```1 2``` ```findIndResidualVar(lambda, totalFactorCov, totalVarTheta = NULL, kappa = NULL, covcov = NULL) ```

## Arguments

 `lambda` Factor loading matrix `totalFactorCov` Total (model-implied) covariance matrix among factors. `totalVarTheta` Indicator total variances. As a default, all total variances are 1. `kappa` Regression coefficient matrix from covariates (column) to indicators (rows) `covcov` A covariance matrix among covariates

## Value

A vector of indicator residual variances.

## Author(s)

Sunthud Pornprasertmanit (psunthud@gmail.com)

• `findIndIntercept` to find indicator (measurement) intercepts

• `findIndMean` to find indicator (measurement) total means

• `findIndTotalVar` to find indicator (measurement) total variances

• `findFactorIntercept` to find factor intercepts

• `findFactorMean` to find factor means

• `findFactorResidualVar` to find factor residual variances

• `findFactorTotalVar` to find factor total variances

• `findFactorTotalCov` to find factor covariances

## Examples

 ```1 2 3 4 5 6``` ```loading <- matrix(0, 6, 2) loading[1:3, 1] <- c(0.6, 0.7, 0.8) loading[4:6, 2] <- c(0.6, 0.7, 0.8) facCov <- matrix(c(1, 0.5, 0.5, 1), 2, 2) totalVar <- rep(1, 6) findIndResidualVar(loading, facCov, totalVar) ```

### Example output

```Loading required package: lavaan
This is lavaan 0.5-23.1097
lavaan is BETA software! Please report any bugs.

###############################################################################################
This is simsem 0.5-13
simsem is BETA software! Please report any bugs.
simsem was developed at the University of Kansas Center for Research Methods and Data Analysis.
###############################################################################################
[1] 0.64 0.51 0.36 0.64 0.51 0.36
```

simsem documentation built on March 29, 2021, 1:07 a.m.