Function stl_fdata 

pub fn stl_fdata(
    data: &[f64],
    n: usize,
    m: usize,
    _argvals: &[f64],
    period: usize,
    s_window: Option<usize>,
    t_window: Option<usize>,
    robust: bool,
) -> StlResult

Wrapper function for functional data STL decomposition.

Computes STL decomposition for each curve in the functional data object and returns aggregated results.

Arguments

• data - Column-major matrix (n x m) of functional data
• n - Number of samples (rows)
• m - Number of evaluation points (columns)
• argvals - Time points of length m (used to infer period if needed)
• period - Seasonal period (in number of observations)
• s_window - Seasonal smoothing window
• t_window - Trend smoothing window (0 for auto)
• robust - Whether to use robustness iterations

Returns

StlResult with decomposed components.