ROC

ROC（價格變動率）是衡量價格變動速度的動量振盪指標，透過計算當前收盤價相對於 N 日前的百分比變化，幫助交易者識別趨勢轉折、確認價格走勢、優化進出場時機。本文提供完整的技術分析、實戰交易策略與 Python 實作範例。

ROC (Rate of Change) is a momentum oscillator that measures the speed of price movements by calculating the percentage change between current close and N periods ago. This guide provides comprehensive technical analysis, practical trading strategies, and Python implementation examples to help traders identify reversals, confirm trends, and optimize entry/exit timing.