Function omega

omega(
x: readonly (readonly number[])[] | null,
options?: OmegaOptions,
): OmegaResult
McDonald's omega (hierarchical, asymptotic and total) from a Schmid-Leiman transformation of an oblique minres factor solution. Equivalent to psych::omega() in R. With its defaults (fm = "minres", rotate = "oblimin", option = "equal", flip = TRUE).
Parameters
- x: readonly (readonly number[])[] | null
  The data matrix (array of rows, NaN for missing values: correlations of pairwise complete observations), or null with options.covmat. At least 2 variables.
- options: OmegaOptions = {}
  See OmegaOptions.
Returns OmegaResult
Example
```
// 6 items: general loadings 0.6, three pairs with group loadings 0.4
const R = [
  [1, 0.52, 0.36, 0.36, 0.36, 0.36],
  [0.52, 1, 0.36, 0.36, 0.36, 0.36],
  [0.36, 0.36, 1, 0.52, 0.36, 0.36],
  [0.36, 0.36, 0.52, 1, 0.36, 0.36],
  [0.36, 0.36, 0.36, 0.36, 1, 0.52],
  [0.36, 0.36, 0.36, 0.36, 0.52, 1],
];
const om = omega(null, { covmat: R });
om.omegaH;   // 0.7297
om.omegaTot; // 0.8378378378378378
```
- Defined in descriptive/omega.ts:319