The second calculates Aroon, and creates two plots – one for the oscillator (and the close price), and another for the up/down signals.The first downloads historical market data from Yahoo Finance. The period is usually 25 days, but can be made longer or shorter to quantify the strength of trends with different characteristic time periods. Aroon oscillator is equal to Aroon up minus Aroon down.Aroon down is equal to 100 x (period – number of days since period low) / period.Aroon up is equal to 100 x (period – number of days since period high) / period.However, read the rest of this article to learn how the critical parts of the VBA are structured. You can download the complete spreadsheet from the link at the bottom of this post. This part introduces a Excel spreadsheet that plots the indicator via data supplied via connectivity to Yahoo Finance. The first part introduced Aroon and explored how it’s used to make better trading decisions. This is the second in a two-part article about the Aroon indicator. Get a VBA-powered spreadsheet that plots Aroon from historical prices downloaded on-the-fly from Yahoo Finance.
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