columna API reference - v0.5.0
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    Interface ClusterVariablesResult

    Multivariate additions (Minitab Stat › Multivariate): Cluster Variables (hierarchical clustering of variables on correlation distance), Multiple Correspondence Analysis (indicator / Burt matrix), Item Analysis (Cronbach's α with item-total statistics) and the promax oblique rotation for factor loadings.

    interface ClusterVariablesResult {
        correlation: number[][];
        distance: "correlation" | "absolute correlation";
        membership?: number[];
        merge: [number, number, number][];
        method: "average" | "single" | "complete" | "ward";
        names: string[];
        order: number[];
        similarity: number[];
    }

    Hierarchy (View Summary)

    Index
    correlation: number[][]
    distance: "correlation" | "absolute correlation"

    Distance measure: 1 − r (default) or 1 − |r|.

    membership?: number[]

    Cluster membership for nClusters (when requested).

    merge: [number, number, number][]

    Merge steps: [i, j, height] with negative indices for leaves (−1−leaf).

    method: "average" | "single" | "complete" | "ward"
    names: string[]
    order: number[]
    similarity: number[]

    Similarity levels (100·(1 − distance)) at each merge.