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Real Code for Bollinger Bandwidth low points Rate this Topic:
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reevescn
Posted : Tuesday, September 21, 2010 5:03:47 PM
Registered User
Joined: 1/26/2005
Posts: 6
Note;

I've just obtained StockFinder 5, and I would like to install the following "Real Code Condition";

Bollinger Band Width less than 3.0 times the lowest bandwidth in 125 days. The points needs to be marked on the stock plot and also an alert should be given when a low point is found. I would also like to make an occasional input change to alter the number 3.0, if this can be done easily. My code for this is:

If Price.Low<3.0 * Price.minlow(125) then
pass
Lokistatic.PlaySound("c:/alert.wav")
End If

Can you provide a correction to this code so that it will work?

Another question is, when I've made a bad "Real Code Condition" on a layout, how can it be deleted?

Charles Reeves
reevescn@hotmail.com
Bruce_L
Posted : Wednesday, September 22, 2010 10:09:22 AM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138
You will need to replace the c:\alert.wav section with the path to any valid wave file on your computer.

'|*****************************************************************|
'|*** StockFinder RealCode Condition - Version 5.0 www.worden.com
'|*** Copy and paste this header and code into StockFinder *********
'|*** Condition:BBwidth Ratio to Low below
'|******************************************************************
'# RatioToLow = UserInput.Single = 3
'# Period = UserInput.Integer = 125
'# BB = indicator.Library.Bollinger Bandwidth
If CurrentIndex >= Period Then
    If BB.Value < RatioToLow * BB.MinLow(Period) Then
        Pass
        If isLastBar Then
            LokiStatic.PlaySound("c:\alert.wav")
        End If
    End If
Else
    SetIndexInvalid
End If

-Bruce
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TC2000 Support Articles
gsn
Posted : Tuesday, December 21, 2010 5:51:53 PM
Registered User
Joined: 11/13/2004
Posts: 121
Could I impose and ask for realcode for the following condition?:

"Bollinger bandwidth within 25% of lowest bandwidth in 6 months and a close inside the bands,"  with the bands' periods and stdev parameters configurable, but defaulting to 20,2?
Bruce_L
Posted : Wednesday, December 22, 2010 12:08:19 PM


Worden Trainer

Joined: 10/7/2004
Posts: 65,138
I started by creating a RealCode Indicator that I called "Combined Bollinger Band Indicator". The first two lines were created by Dragging and Dropping the Bollinger Bands from the Chart into the Code tab of the RealCode Editor.

'# BBTop = chart.BollingerBands.0
'# BBBottom = chart.BollingerBands.1
If BBTop.Value > BBBottom.Value Then
    OpenValue = 100 * (Price.Last - BBBottom.Value) / _
        (BBTop.Value - BBBottom.Value)
    HighValue = BBTop.Value
    LowValue = BBBottom.Value
    Plot = 100 * (BBTop.Value - BBBottom.Value) / _
        ((BBTop.Value + BBBottom.Value) / 2)
Else
    OpenValue = Single.NaN
    HighValue = Single.NaN
    LowValue = Single.NaN
    Plot = Single.NaN
End If

Then I Dragged and Dropped that Indicator into the Code tab of the RealCode Editor to create the first line of the following RealCode Condition:

'# CBBI = chart.CombinedBollingerBandIndicator
'# Period = UserInput.Integer = 126
'# Percent = UserInput.Single = 25
If CBBI.Value <= (1 + Percent / 100) * CBBI.MinClose(Period) AndAlso _
    CBBI.Low <= Price.Last AndAlso Price.Last <= CBBI.High Then Pass

Attachments:
gsn 49028.sfRuleRC - 10 KB, downloaded 749 time(s).



-Bruce
Personal Criteria Formulas
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