hhv & ComputeOnClose interaction

[thaynes]

When a chart closed at a new high in the last X bars and setComputeOnClose(true), the last bar does not appear to be counted towards the high. Problem does not occur on llv.

I dont see anything wrong with the code.
I have an image of the issue but am not sure where to upload it.

var bInit = false;
var xATR = null;
function preMain() {
    setPriceStudy(true);
    setStudyTitle("Off by 1 ?");

    setShowCursorLabel(false);
    setComputeOnClose(true);
//END preMain
}


function main( ) {
var Length = 8 ;

// misc Local vars
var nHHigh;
var nLLow;

// appears to be an off by 1 error in hhv&llv that exlude last bar at EOD?
nHHigh = hhv( Length, high() );
nLLow  = llv( Length, low() );

clearLines();
clearText();

debugPrint("nHHigh = " + nHHigh + " : nLLow = " + nLLow + "\n" );

    drawLineAbsolute( -(2 * Length), nHHigh, 2, nHHigh, PS_SOLID, 3, Color.green,  10 );
    drawLineAbsolute( -(2 * Length), nLLow,  2, nLLow,  PS_SOLID, 3, Color.maroon, 20 );  

    drawTextAbsolute( +2, nHHigh, "High: " + nHHigh, Color.aqua, null, Text.ONTOP, null, 15, 11 );      
    drawTextAbsolute( +2, nLLow,  "Low: "  + nLLow,  Color.aqua, null, Text.ONTOP, null,15, 21 );      

    return ;
//END main
} 

ick ... cant get rid of the html formating in the php/code ..
best I can do.

-Terry

[ACM]

Terry
I am seeing the same behavior with both the hhv and llv ie the current bar is not counted towards the calculation of the highest High or lowest Low. This is to be expected when you enable setComputeOnClose() as the last bar being processed is at bar index -1.
If this is not what you are seeing then you may want to attach an image that illustrates the issue. You can simply attach the image to a message by using the Attach file option which is available when you compose the message.
As an aside keep in mind that the setComputeOnClose() function has no parameters so even if you were to write setComputeOnClose(false) it would still be enabled.
With regards to the html formatting in the php/code that was appearing because you were using both the [ code ] and [ php] tags. You need to use just one or the other. I have corrected that issue in your post. I have also moved the thread to the EFS Studies forum which is the appropriate forum given the topic
Alex

Originally posted by thaynes
When a chart closed at a new high in the last X bars and setComputeOnClose(true), the last bar does not appear to be counted towards the high. Problem does not occur on llv.

I dont see anything wrong with the code.
I have an image of the issue but am not sure where to upload it.

var bInit = false;
var xATR = null;
function preMain() {
    setPriceStudy(true);
    setStudyTitle("Off by 1 ?");

    setShowCursorLabel(false);
    setComputeOnClose(true);
//END preMain
}


function main( ) {
var Length = 8 ;

// misc Local vars
var nHHigh;
var nLLow;

// appears to be an off by 1 error in hhv&llv that exlude last bar at EOD?
nHHigh = hhv( Length, high() );
nLLow  = llv( Length, low() );

clearLines();
clearText();

debugPrint("nHHigh = " + nHHigh + " : nLLow = " + nLLow + "\n" );

    drawLineAbsolute( -(2 * Length), nHHigh, 2, nHHigh, PS_SOLID, 3, Color.green,  10 );
    drawLineAbsolute( -(2 * Length), nLLow,  2, nLLow,  PS_SOLID, 3, Color.maroon, 20 );  

 drawTextAbsolute( +2, nHHigh, "High: " + nHHigh, Color.aqua, null, Text.ONTOP, null, 15, 11 );      
 drawTextAbsolute( +2, nLLow,  "Low: "  + nLLow,  Color.aqua, null, Text.ONTOP, null,15, 21 );      

    return ;
//END main
} 

ick ... cant get rid of the html formating in the php/code ..
best I can do.

-Terry

[thaynes]

Thanks

Appreciate the clarification on llv/hhv at behavor, was a little surprised that EOD did not close the bar. Oddly I did not get
the same results on llv as hhv at EOD, but dont have picture.

I use the true in ComputeOnClose() to remind myself,
I comment it out when I dont want that behavor.

Will watch the php/code in the future ...

hope you have nice day,
-Terry

[ACM]

Re: Thanks

Terry
If by EOD you mean on the last bar of the day (ie trading session) then that condition in itself does not "close" a bar. A bar is considered closed by the efs engine only on the first tick of a new bar at which point the efs engine processes the bar that just closed.
You too have a great day and weekend
Alex

Originally posted by thaynes
Appreciate the clarification on llv/hhv at behavor, was a little surprised that EOD did not close the bar. Oddly I did not get
the same results on llv as hhv at EOD, but dont have picture.

I use the true in ComputeOnClose() to remind myself,
I comment it out when I dont want that behavor.

Will watch the php/code in the future ...

hope you have nice day,
-Terry