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Strategies & Market Trends : TA-Quotes Plus
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To: Mike Hagerty who wrote (1762)9/10/1997 9:53:00 AM
From: Gary Lyben   of 11149
 
Mike -

There has been a lot of previous discussion on this thread about ema's - maybe someone can supply the message numbers?

Form the r2 help files:

This statement is needed because the EMA and MACD indicators are cumulative in nature; their value depends on the number of days used to calculate it. For example, using 20 days of price history to calculate 20-day EMA will give a different result than using 200 days of price history to calculate the 20-day EMA.

This will result in an EMA value that does not match the value displayed in the Display Charts program. If you want your scans to reflect what is on the screen, use a DaysToLoad value of 200 or more.

There is also a discussion in the Metastock help files about cumulative indicators.

There is also a discussion in the r2 help files - search for Exponential Moving Average.

Gary

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