Function _as_matrix

python/openquant/feature_diagnostics.py:21–30

(x: Sequence[Sequence[float]])

def _as_matrix(x: Sequence[Sequence[float]]) -> list[list[float]]:
    rows = [list(map(float, r)) for r in x]
    if not rows:
        raise ValueError("X cannot be empty")
    width = len(rows[0])
    if width == 0:
        raise ValueError("X must contain at least one feature")
    if any(len(r) != width for r in rows):
        raise ValueError("X must be rectangular")
    return rows


def _as_vector(y: Sequence[float], n_rows: int) -> list[float]: