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Create Scan Condition over multiple days Rate this Topic:
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David-M
Posted : Sunday, February 10, 2013 2:40:15 PM
Platinum Customer Platinum Customer

Joined: 1/1/2005
Posts: 5

Hello,

I am wondering how to create a scan condition that scans the last n bars. For example, search for the 50 bar MA crossing up through the 100 day MA anytime in the last 5 bars.

Is it possible to do that with the new scan features of v12.3 or do I need to resort to using a PCF?

Thanks in advance.

Bruce_L
Posted : Monday, February 11, 2013 11:01:01 AM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138

You will need to use a formula of some sort. The purely formula based method of doing this would be something like the following:

(AVGC50 > AVGC100 AND AVGC50.1 <= AVGC100.1) OR (AVGC50.1 > AVGC100.1 AND AVGC50.2 <= AVGC100.2) OR (AVGC50.2 > AVGC100.2 AND AVGC50.3 <= AVGC100.3) OR (AVGC50.3 > AVGC100.3 AND AVGC50.4 <= AVGC100.4) OR (AVGC50.4 > AVGC100.4 AND AVGC50.5 <= AVGC100.5)

But there is another way to do this that while probably not necessary for something as short as five bars, is a lot more efficient when you are checking over a longer number of bars. Start by using a Condition Formula for a crossup as the Boolean Formula in a Custom PCF % True Indicator:

AVGC50 > AVGC100 AND AVGC50.1 <= AVGC100.1

Then set the Period of the Custom PCF % True Indicator to 5 and the Average Type to Simple. The Custom PCF % True Indicator will now be greater than 0 if the Condition was true at any point during the most recent 5-bars.

This allows you to click on the Custom PCF % True Indicator and select Create Scan Condition to create a Condition for the Custom PCF % True Indicator being greater than zero which will return the same results as the longer formula given above.

Create Conditions from Your Chart



-Bruce
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