why does this code not work?

[clearpicks]

If I apply the following code on a daily chart, i.e. ($SPX, D), it doesn't work. However if I change the value of n to smaller value, for example, n = 5, then vC shall be printed out. I have been aware of this problem for quite a long time. Is there some good solution to this problem? If I run this code on (QQQ, 60) chart with enough bars on the chart, then there is no problem at all even if n is set to 60. In a lot of scenarios, esignal just quitely stops the execution of the efs if some problems like this one apear in the efs. I think it should at least gives some runtime warning about this.


Clearpicks



var i;

var vC;

function preMain(){
setPriceStudy(true);
}



function main(){

if ( getBarState() == BARSTATE_ALLBARS ) {
}

if ( getCurrentBarIndex() == 0 ) {
var n = 60;
vC = getValueAbsolute("Close", 0, -n, "QQQ,60");

debugPrintln(vC);
}
}

[rmclean]

Clearpicks,
I can't help with this one. I tried the script on ES #F 15 min and daily. In both cases it caused a complete crash of eSignal. I don't know why.

Bob

[clearpicks]

Hi Bob,

Thanks for your reply. When I tested, I use

vC = getValueAbsolute("Close", 0, -60, "QQQ,60");

instead of

var n = 60;
vC = getValueAbsolute("Close", 0, -n, "QQQ,60");

Can you test it again on some other instruments like SPY or QQQ itself?


Clearpicks

Originally posted by rmclean
Clearpicks,
I can't help with this one. I tried the script on ES #F 15 min and daily. In both cases it caused a complete crash of eSignal. I don't know why.

Bob

[Guest]

clearpicks,

I also locked up pretty hard when I tried running your code.

here is the output I received when I changed these two lines:

var n = 10;
vC = getValueAbsolute("Close", 0, -n, "QQQ,5");

35.300000000000004,35.28,35.260000000000005,35.25,35.230000000000004,35.24,35.260000000000005,35.318000000000005,35.39,35.367700000000006 

I suspect that the length of the array is too large and it is crashing on a buffer overflow. I had the same problem a while back, but I was actually getting a buffer overflow error. I suspect the magnitude of yours is so large, you are really killing it. Please check out the third post on this link

http://forum.esignalcentral.com/showthread.php?s=&threadid=5512

I rewrote the code a little and this seems to work. Notice where I multiplied by 1 to convert from a string to a number.

var clearData = new Array(1000);

function preMain(){
    setPriceStudy(true);
}

function main(){
    
    if ( getBarState() == BARSTATE_ALLBARS ) {
    }
    
    if ( getCurrentBarIndex() == 0 ) {
        var n = 100;var vC;
        for (i=0;i<n;i++){
            vC = getValueAbsolute("Close", -i, 1, "QQQ,60")*1;
            clearData[i] =vC.toFixed(4)*1
            debugPrintln(clearData[i]);
        }
    } 
} 

[clearpicks]

Thanks, Steve. I never linked this kind of error to a buffer overflow because I didn't see any complain message in the output window.

Originally posted by stevehare2003
clearpicks,

I also locked up pretty hard when I tried running your code.

here is the output I received when I changed these two lines:

var n = 10;
vC = getValueAbsolute("Close", 0, -n, "QQQ,5");

35.300000000000004,35.28,35.260000000000005,35.25,35.230000000000004,35.24,35.260000000000005,35.318000000000005,35.39,35.367700000000006 

I suspect that the length of the array is too large and it is crashing on a buffer overflow. I had the same problem a while back, but I was actually getting a buffer overflow error. I suspect the magnitude of yours is so large, you are really killing it. Please check out the third post on this link

http://forum.esignalcentral.com/showthread.php?s=&threadid=5512

I rewrote the code a little and this seems to work. Notice where I multiplied by 1 to convert from a string to a number.

var clearData = new Array(1000);

function preMain(){
    setPriceStudy(true);
}

function main(){
    
    if ( getBarState() == BARSTATE_ALLBARS ) {
    }
    
    if ( getCurrentBarIndex() == 0 ) {
        var n = 100;var vC;
        for (i=0;i<n;i++){
            vC = getValueAbsolute("Close", -i, 1, "QQQ,60")*1;
            clearData[i] =vC.toFixed(4)*1
            debugPrintln(clearData[i]);
        }
    } 
}