Estimate an exploratory factor solution — efa

Runs psych::fa() on selected item columns and returns loadings, communalities, uniqueness, variance summaries, and simple item retention flags. The psych package is optional and is only required when this function is called.

Usage

efa_solution(
  data,
  instrument,
  items = NULL,
  scales = NULL,
  nfactors = 1L,
  extraction = c("minres", "pa", "ml"),
  rotation = c("oblimin", "promax", "varimax"),
  min_loading = 0.3,
  cross_loading = 0.3
)

Arguments

data: A data.frame of responses.
instrument: An sframe object.
items: Character vector of item IDs. When NULL, scale items are used.
scales: Optional scale IDs used to select item columns.
nfactors: Number of factors.
extraction: Extraction method passed to psych::fa().
rotation: Rotation method passed to psych::fa().
min_loading: Minimum salient loading.
cross_loading: Maximum secondary loading before a warning is raised.

Value

An object of class sframe_efa_solution.