ROC Alert [Gu5]

If the value drops (or rises) SHARPLY, we will receive an alert
版本注释: Clean code

In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.