Current intraday high value

AFL Programming
#1

After a search on AFL library and the forum,

I am trying to get the highest high value since open time 93000 each day. I am using OHLC 1 minute bars. The goal is to mark a drop from intraday highesthigh as a trigger.

I am having trouble getting the code to generate any trades in backtesting.

Any help is much appreciated.

tn = TimeNum();
StartTime = 93000;
Endtime = Now(4);
StartBar = tn == StartTime;
EndBar = tn == Endtime;

Highestsinceopen = ValueWhen( EndBar, HighestSince( StartBar, High ) );
Lowestsinceopen = ValueWhen( EndBar, LowestSince( StartBar, Low ) );

Buy = Close < 0.99 * highestsinceopen;
Sell = profittarget ;
Valuewhen statement n=0
#2

You are using equality check for tn. So it timenum does not exist in the TimeNum() array then it will result in NULL return. Also NOW uses your operating system's date/time.

You may do like this (you can change between ValueWhen and IIf mode in line 5)

/// You can change between ValueWhen and IIf mode in line 5
/// @link https://forum.amibroker.com/t/current-intraday-high-value/17840/2
StartTime = 93000;
Endtime = 235959;
ValueWhen_mode = false; // false -> Iif mode, true -> ValueWhen mode 

tn = TimeNum();
tn_range = tn >= StartTime AND tn <= EndTime;
new_range = tn_range != Ref(tn_range, -1 );

if ( ValueWhen_mode ) {// ValueWhen mode
	Highestsinceopen = ValueWhen(tn_range, HighestSince(new_range, High) );
	Lowestsinceopen = ValueWhen(tn_range, LowestSince(new_range, Low) );
} else { // IIf() mode
	Highestsinceopen = IIf(tn_range, HighestSince(new_range, High), Null);
	Lowestsinceopen = IIf(tn_range, LowestSince(new_range, Low), Null);
}

Buy = Close < 0.99 * highestsinceopen;
Sell = 0;//profittarget ;
// ApplyStop(....

Plot( C, "Price", colorDefault, styleBar );
Plot( Highestsinceopen, "Highestsinceopen", colorGreen, styleStaircase );
Plot( Lowestsinceopen, "Lowestsinceopen", colorRed, styleStaircase );
//PlotShapes( Buy * shapeUpArrow, colorGreen, layer = 0, L );

Also I see in post #1 that you want to exit via set profit target. It is unknown variable but I suspect that you want to exit at fix target level since Buy. For that you should rather use ApplyStop().

valwhen

iif

4 Likes
#3

Thank you for the help and great explanation

1 Like