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Double Top Detection for Amibroker (AFL)

Rating:
3 / 5 (Votes 3)
Tags:
amibroker, exploration, pattern

Detect double top double bottom

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Indicator / Formula

Copy & Paste Friendly
/* Detecting double tops and bottoms*/
percdiff = 5; /* peak detection threshold */
fwdcheck = 5; /* forward validity check */
mindistance = 10;
validdiff = percdiff/10;

PK= Peak( H, percdiff, 1 ) == High;
TR= Trough( L, percdiff, 1 ) == Low;


x = Cum( 1 );
XPK1 = ValueWhen( PK, x, 1 );
XPK2 = ValueWhen( PK, x, 2 );
xTR1 = ValueWhen( Tr, x, 1 );
xTr2 = ValueWhen( Tr, x, 2 );

peakdiff = ValueWhen( PK, H, 1 )/ValueWhen( PK, H, 2 );
Troughdiff=ValueWhen( tr, L, 1 )/ValueWhen( tr, L, 2 );

doubletop = PK AND abs( peakdiff - 1 ) < validdiff AND (Xpk1 -Xpk2)>mindistance AND High > HHV( Ref( H, fwdcheck ), fwdcheck - 1 );
doubleBot=tr AND abs( troughdiff - 1 ) < validdiff AND (Xtr1 -Xtr2)>mindistance AND Low < LLV( Ref( L, fwdcheck ), fwdcheck - 1 );

Sell = doubletop;
Buy = doublebot;

WriteIf( Highest( doubletop ) == 1, "AmiBroker has detected some possible
double top patterns for " + Name() + "\nLook for green arrows on the price
chart.", "There are no double top patterns for " + Name() );

WriteIf(Highest( doublebot)==1,"AmiBroker has detected some possible double
bottom patterns for " + Name() + "\nLook for red arrows on the price
chart.", "There are no double bottom patterns for " + Name() );

Filter=Sell OR Buy ;

AddColumn( IIf( doubletop , 88, 01), "Double TOP", formatChar );
AddColumn( IIf( doublebot , 88, 01), "Double BOT", formatChar );

4 comments

1. tigernifty

Dear sir, am using AMI-5, the double top..double bottom AFL not shown anything, pls…clarifty the above…thx for ur interest..(s.suresh..9842406366.)

2. Alok

Dear Friend,

The double top and bottom does not show it is blank on EOD data. Also on RT.

Thanks and Regards
Alok

3. administrator

Hello

It’s only an exploration doesn’t actually plot the pattern.

4. karthi_nkkkkl

it`s search only, not find any

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