A Whittaker smoother using penalized LS & iterative imputation to smooth data & fill gaps.
time-series interpolation matlab smoothing regularization missing-data preprocessing sparse-matrix chemometrics denoising incomplete-data weight-matrix spectral-reconstruction nan-handling penalized-least-squares whittaker-smoother eilers signal-recovery iterative-imputation data-gap-filling
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Updated
Aug 7, 2026 - MATLAB