Execution after initial load

[waynecd]

Hi,

As I understand it anything within:
if(getBarState()==BARSTATE_NEWBAR){code}
should only execute on the first tick of a new bar but when I run the code below it plots a red circle above all candles even if I preceed it with:
if(getBarState()==BARSTATE_ALLBARS){return;}

Am I missing something?

Only if I include -getCurrentBarIndex() == 0- as a condition does it then execute only on new bars, i.e.,:
if(getBarState()== BARSTATE_NEWBAR && getCurrentBarIndex() == 0){code}

Thanks in advance.

This is my test code:

function preMain(){
    setPriceStudy(true);
}
var Cntr = 0;
function main() {

    var nState = getBarState();

    if(nState == BARSTATE_ALLBARS ) return;
//    else if(nState == BARSTATE_NEWBAR && getCurrentBarIndex() == 0){
    else if(nState == BARSTATE_NEWBAR){
        drawShapeRelative( 0, high(0), Shape.CIRCLE, null, Color.red, Shape.TOP | Shape.ONTOP ); 
    }
}
This is what plots on the chart: 

Wayne

[ACM]

Re: Execution after initial load

waynecd
You can find a complete explanation of the getBarState() function in the Beginner Tutorial 4: Understanding Bar State and Bar Indexing which is in the Help Guides and Tutorials folder of the EFS KnowledgeBase
Alex

Originally posted by waynecd
Hi,

As I understand it anything within:
if(getBarState()==BARSTATE_NEWBAR){code}
should only execute on the first tick of a new bar but when I run the code below it plots a red circle above all candles even if I preceed it with:
if(getBarState()==BARSTATE_ALLBARS){return;}

Am I missing something?

Only if I include -getCurrentBarIndex() == 0- as a condition does it then execute only on new bars, i.e.,:
if(getBarState()== BARSTATE_NEWBAR && getCurrentBarIndex() == 0){code}

Thanks in advance.

This is my test code:

function preMain(){
    setPriceStudy(true);
}
var Cntr = 0;
function main() {

    var nState = getBarState();

    if(nState == BARSTATE_ALLBARS ) return;
//    else if(nState == BARSTATE_NEWBAR && getCurrentBarIndex() == 0){
    else if(nState == BARSTATE_NEWBAR){
        drawShapeRelative( 0, high(0), Shape.CIRCLE, null, Color.red, Shape.TOP | Shape.ONTOP ); 
    }
}
This is what plots on the chart: 

Wayne

[waynecd]

Alex,

Looks like I need a trip back to the basics.

Thanks,

Wayne

[waynecd]

In case it helps others;

In addition to the Tutorial I found a good tool to evaluate how -getBarState- functions in a script by SteveHare2003 found at:

http://share.esignal.com/download.jsp?groupid=339&folder=Demo%20Concepts&file=barState%20Play.efs

Wayne