Comments on: How to plot a trailing stop in the Price chart

By: Tomasz Janeczko

Tomasz Janeczko — Wed, 30 Jul 2008 11:30:16 +0000

For “point” mode replace
StopLevel = 1 – Param(”trailing stop %”, 3, 0.1, 10, 0.1)/100;
with
StopLevel = Param(”trailing stop pt”, 3, 0.1, 10, 0.1);

and every occurrence of:
High[ i ] * stoplevel

with
High[ i ] – stoplevel

By: Flávio

Flávio — Wed, 30 Jul 2008 04:20:56 +0000

Can you please put an example using ApplyStop(stopTypeTrailing, stopModePoint…)? I.e. show how to calculate “stopline” so that the plot match the array used by ApplyStop() internally when in stopModePoint mode? Thanks.

By: Tomasz Janeczko

Tomasz Janeczko — Sun, 23 Mar 2008 13:43:11 +0000

Yes it works with short trades as well. Remember to enable SHORT trades in the settings!

By: Mikey

Mikey — Sun, 23 Mar 2008 12:48:41 +0000

Does applystop also work to cover a short trade?

I can get the both methods to work as a buy/sell combo, but a simple replacement of “Buy” with “Short” and “Sell” with “Cover” doesn’t seem to work. (also swapped the stop line around to be LowestSince, rather than HighestSince).

Code I’m trying is as follows

StopLevel = Param(”trailing stop %”, 3, 0.1, 10, 0.1 );

SetTradeDelays(0,0,0,0);

Short = Cross( MACD(), Signal() );
Cover= 0;
ApplyStop( stopTypeTrailing, stopModePercent, StopLevel, True );

Equity( 1); // evaluate stops, all quotes

InTrade = Flip( Short, Cover );

SetOption(”EveryBarNullCheck”, True );
stopline = IIf( InTrade, LowestSince( Short, Low ) * ( 1 – 0.01 * StopLevel ), Null );

PlotShapes(Short*shapeUpArrow,colorGreen,0,Low);
PlotShapes(Cover*shapeDownArrow,colorRed,0,High);

Plot( Cover,”Price”,colorBlack,styleBar);
Plot( stopline, “trailing stop line”, colorRed );

By: Tomasz Janeczko

Tomasz Janeczko — Thu, 10 Jan 2008 10:38:29 +0000

Copy-paste artists usually forget about using SAME settings. Most probably you are using non-zero trading delays while the example assumes using zero delay.

By: Janhaus

Janhaus — Thu, 10 Jan 2008 01:21:59 +0000

I pasted these two types of AFL code into 2 different formulas, and quickly find that these two approaches generate different trade results in Backtest. Any ideas?

By: Grant Noble

Grant Noble — Wed, 09 Jan 2008 07:14:19 +0000

I must agree. I once spent months getting frustrated w/ ApplyStop before moving on to learn loop code. Seeing identical functionality presented both ways is fascinating and instructive. Nicely done Tomasz.

By: Bert Steele

Bert Steele — Sun, 17 Jun 2007 20:48:52 +0000

Thanks for the looping example. Examples that address issues via looping and also array approach are appreciated.