diag_residuals: Compute Item Residuals from a Factor Loading Vector or Matrix

In Boklauth/AUTTT: A Unified Treatment in Test Theory

Compute Item Residuals from a Factor Loading Vector or Matrix

Description

The function diag_residuals will compute item residuals from the standardized factor loadings.

Usage

diag_residuals(x)

Arguments

x	This is a vector of factor loadings of a p x m matrix of factor loadings, where p is the total number of items and m is the total number of dimensions.

Value

diag_residuals will return a p x p diagonal matrix of residuals, in which the off diagonal cells are zero, and p is the total number of items.

Examples

library(AUTTT)
# Example 1 
lambs <- runif(12, .7, .95)
x <- lambs
diag_residuals(x = lambs)

# Example 2
lambs <- runif(12, .7, .95)
mymodel <- list(c(1,2,3,4), c(5,6,7), c(8, 9,10, 11, 12))
to_loadingmatrix(loading_vec = lambs, model = mymodel)
x <- lambs
diag_residuals(x = lambs)

Boklauth/AUTTT documentation built on Dec. 9, 2022, 7:37 a.m.