{"width":"100%","author_url":"https://blog.hatena.ne.jp/chaos_kiyono/","author_name":"chaos_kiyono","categories":["\u30d5\u30fc\u30ea\u30a8\u5909\u63db","\u6642\u7cfb\u5217\u89e3\u6790","\u78ba\u7387\u904e\u7a0b"],"height":"190","provider_url":"https://hatena.blog","version":"1.0","url":"https://chaosmemo.com/entry/2025/12/17/182241","description":"\u6642\u7cfb\u5217\u306e\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u306e\u63a8\u5b9a\u306f\u3001\u6642\u7cfb\u5217\u306b\u542b\u307e\u308c\u308b\u5468\u671f\u6027\u3092\u691c\u51fa\u3057\u305f\u308a\u3001\u80cc\u5f8c\u306b\u3042\u308b\u78ba\u7387\u904e\u7a0b\u306e\u57fa\u672c\u7279\u6027\u3092\u8abf\u3079\u305f\u308a\u3059\u308b\u305f\u3081\u306e\u3001\u6700\u3082\u4ee3\u8868\u7684\u306a\u89e3\u6790\u6cd5\u306e\u4e00\u3064\u3067\u3001\u300c\u30b9\u30da\u30af\u30c8\u30eb\u89e3\u6790\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002\u4eca\u56de\u306f\u30b9\u30da\u30af\u30c8\u30eb\u89e3\u6790\u306e\u57fa\u790e\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002 1. \u771f\u306e\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb \u3010R\u3011\u3053\u3053\u3067\u4f7f\u7528\u3057\u305fR\u30b9\u30af\u30ea\u30d7\u30c8 2. spectrum() \u3092\u4f7f\u3044\u3053\u306a\u3059 2.1 \u307e\u305a\u306f fft()\uff1a\u6700\u3082\u7d20\u6734\u306a\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u63a8\u5b9a 2.2 spectrum() \u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\u524d\u51e6\u7406\u3092\u542b\u3080 (1) \u76f4\u7dda\u30c8\u30ec\u30f3\u30c9\u306e\u9664\u53bb\uff08detrend\uff09 (2) \u8efd\u3044\u30c6\u30fc\u30d1\uff08\u7a93\uff09\u306e\u4ed8\u4e0e\uff08taper\uff09 \u3010R\u3011\u3053\u3053\u3067\u4f7f\u7528\u3057\u305fR\u30b9\u30af\u30ea\u30d7\u30c8 2.3 spectrum() \u2026","blog_url":"https://chaosmemo.com/","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/c/chaos_kiyono/20251217/20251217163923.png","title":"\u3010R\u3067\u30b9\u30da\u30af\u30c8\u30eb\u89e3\u6790\uff11\u3011\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u63a8\u5b9a\u306e\u5b9f\u969b\uff1a\u96a0\u308c\u305f\u771f\u306e\u59ff\u3092\u8ffd\u3046","provider_name":"Hatena Blog","blog_title":"\u30b1\u30a3\u30aa\u30b9\u306e\u6642\u7cfb\u5217\u89e3\u6790\u30e1\u30e2\u30e9\u30f3\u30c0\u30e0","published":"2025-12-17 18:22:41","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fchaosmemo.com%2Fentry%2F2025%2F12%2F17%2F182241\" title=\"\u3010R\u3067\u30b9\u30da\u30af\u30c8\u30eb\u89e3\u6790\uff11\u3011\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u63a8\u5b9a\u306e\u5b9f\u969b\uff1a\u96a0\u308c\u305f\u771f\u306e\u59ff\u3092\u8ffd\u3046 - \u30b1\u30a3\u30aa\u30b9\u306e\u6642\u7cfb\u5217\u89e3\u6790\u30e1\u30e2\u30e9\u30f3\u30c0\u30e0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}