chaos_kiyono https://blog.hatena.ne.jp/chaos_kiyono/ Ken-Chaos’s Random Notes on R https://chaos-r.hatenadiary.jp/ Fundamentals of Digital Filters Fundamentals and Applications of Savitzky–Golay Filters FIR filter time series analysis R This time, I’ll introduce the Savitzky–Golay filter, which is one of the standard methods for smoothing jagged, bumpy, and noisy data. This filter has the attractive property of reducing noise while preserving key signal features—especially the shape and height of peaks (see the figure below). Becau… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaos-r.hatenadiary.jp%2Fentry%2F2026%2F01%2F25%2F003946" title="An Introduction to Savitzky–Golay Filters (Part I): Smoothing, Differentiation, and Frequency Characteristics - Ken-Chaos’s Random Notes on R" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/c/chaos_kiyono/20260124/20260124234452.png Hatena Blog https://hatena.blog 2026-01-25 00:39:46 rich https://chaos-r.hatenadiary.jp/entry/2026/01/25/003946 1.0 100%