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Registered User
Joined: 10/9/2007
Posts: 1
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I'd like to scan for candlestick hammer patterns on daily charts that coincide with a volume spike. How can I do that?
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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I'm not a candlestick guy. The following is based on the Hammer PCFs in Boolean PCFs for Candlestick Patterns:
Hammer/Dragonfly Doji:
((C < O) * C + (C > O) * O) * ( - 1) - L >= (H - L) * .75 AND H - L > AVGH21 - AVGL21
*Sort in ascending order*
Inverted Hammer/Gravestone Doji:
ABS(C - O) <= (H - L) * .25 AND (C + O) / 2 - L <= (H - L) * .25 AND H - (C + O) / 2 >= (C + O / 2 - L) * .34
*Sort in ascending order*
Adding a Volume Spike condition (in this case, twice the 30-Period SMA of Volume) results in:
Hammer/Dragonfly Doji:
((C < O) * C + (C > O) * O) * ( - 1) - L >= (H - L) * .75 AND H - L > AVGH21 - AVGL21 AND V > 2 * AVGV30.1
*Sort in ascending order*
Inverted Hammer/Gravestone Doji:
ABS(C - O) <= (H - L) * .25 AND (C + O) / 2 - L <= (H - L) * .25 AND H - (C + O) / 2 >= (C + O / 2 - L) * .34 AND V > 2 * AVGV30.1
You should be able to use them as EasyScan Conditions. You may wish to review the following:
How to create a Personal Criteria Forumula (PCF)
Using EasyScan to find stocks that meet your own criteria
Handy PCF example formulas to help you learn the syntax of PCFs!
PCF Formula Descriptions
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 7/14/2005
Posts: 2
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Is there a formula for automatic trendline recognition?
Thank You Kindly,
Smith
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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Fastmoney,
I'm not sure exactly what you are trying to find. Do you want to identify a specific type of trendline? You may wish to review the following:
Drawing Trendlines, Regressions and Writing Notes on a chart
Spotting trend changes using linear regression channel sorts
Learn to quickly identify when price and volume are in or out of step
Using Linear Regression Sorts to Help Spot Divergences
Learn how to use the forums: post a new topic, reply, Search existing topics
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 2/1/2008
Posts: 37
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QUOTE (Bruce_L) I'm not a candlestick guy. The following is based on the Hammer PCFs in Boolean PCFs for Candlestick Patterns:
Hammer/Dragonfly Doji:
((C < O) * C + (C > O) * O) * ( - 1) - L >= (H - L) * .75 AND H - L > AVGH21 - AVGL21
*Sort in ascending order*
Inverted Hammer/Gravestone Doji:
ABS(C - O) <= (H - L) * .25 AND (C + O) / 2 - L <= (H - L) * .25 AND H - (C + O) / 2 >= (C + O / 2 - L) * .34
Hi there,
I am trying to covert these formulas to use in Blocks 3.0...
I was able to convert the first one for bullish signals (above) as follows...
QUOTE
If ((price.Close < price.Open) * price.Close + (price.Close > price.Open) * price.Open) * (-1) - price.Low >= (price.High - price.Low) *.75 Then pass
But I am having trouble converting the second formula for Inverted bearish signals...
In particular I am not sure what "ABS" stands for at the begining of the formula...
Looking for any help I can get here...
Thanks.
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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Mindraider,
I wasn't sure if enclosing a Boolean expression in parentheses would work the same in Blocks' RealCode as it does in TeleChart's Personal Criteria Formula Language, but it seems to be working correctly in the charts I've viewed. I probably would have written the formula you have successfully converted as:
If Price.High > Price.Low And System.Math.Min(Price.Close,Price.Open) - Price.Low >= .75 * (Price.High - Price.Low) Then Pass
The ABS() function returns the Absolute Value (it converts negative values to positive values) of whatever is inside the parentheses. This can be reproduced in RealCode using System.Math.Abs().
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 2/1/2008
Posts: 37
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Thanks Bruce.
Your code looks tighter and so I have used it for the Bullish signals.
I am still having trouble with the bears and the System.Math.Abs function.
QUOTE
If System.Math.Abs(price.Close - price.Open) <= (price.High - price.Low) * .25 And (price.Close + price.Open) / 2 - price.Low <= (price.High - price.Low) * .25 And price.High - (price.Close + price.Open) / 2 >= (price.Close + price.Open / 2 - price.Low) * .34 Then pass
This does not seem to pick up anything. I am in over my head here. Help would be appreciated.
When I use the abs function it prompts for about 7 options, so some clarification that would also help.
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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Mindraider,
I'm not a programmer and really can't explain all of the options available for the System.Math.Abs() function (it is pretty standard VB.NET programming however, so an internet tutorial or reference might be useful in this regard). That said, I don't think it is the reason your formula is not returning any results.
I'm not a candlestick guy, but I think the problem is a missing pair of parentheses when calculating the Body Midpoint near the end of the formula. Please try the following instead:
If System.Math.Abs(Price.Close - Price.Open) <= (Price.High - Price.Low) * .25 And (Price.Close + Price.Open) / 2 - Price.Low <= (Price.High - Price.Low) * .25 And Price.High - (Price.Close + Price.Open) / 2 >= ((Price.Close + Price.Open) / 2 - Price.Low) * .34 Then Pass
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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Registered User
Joined: 2/1/2008
Posts: 37
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Great stuff. You have been very helpful... Thanks! 
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Worden Trainer
Joined: 10/7/2004
Posts: 65,138
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Mindraider,
You're welcome.
-Bruce
Personal Criteria Formulas
TC2000 Support Articles
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