getLambda: getLambda
In BifactorIndicesCalculator: Bifactor Indices Calculator

getLambda computes or extracts a matrix of factor loadings given some input. Methods exist to support an input of a dataframe, an mplus.model from MplusAutomation, a SingleGroupClass object from mirt, and a lavaan object from lavaan. Please do not use a tibble, as they do not support row names, and it is best if your items are given names.

1	getLambda(x, standardized = TRUE)

`x`	an object to be converted into a factor loading matrix, or an object containing a fitted model from which a factor loading matrix will be extracted. Supported classes are `data.frame`, `matrix`, `mplus.model`, `lavaan`, and `SingleGroupClass`.
`standardized`	can be used to specify whether a standardized or unstandardized factor loading matrix should be returned. Only relevant for `lavaan` and `mplus.model` input. The standardized matrix for `mplus.model` is taken from stdyx results.