Volume by Price

[PTC Man]

Hi.

Is it possible to do the Volume by price indicator in eSignal?

I found this example, http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:volu me_by_price

The main focus though would be in intraday charts because plotting this indicator on top of it, you could see the volume by price for each day and then knowning where in the day, the maximum volume was made.

I attached 1 image for you to see what I'm talking about.

Regards

[emet]

Hi PTC Man,

I created something very similar for my personal use but i don't see any problems if it will help you in your trading

EMET

var fpArray = new Array();
var bInit = false;

function preMain() {

    setPriceStudy(true);
    setShowCursorLabel(false);
    setShowTitleParameters( false );
    
    setStudyTitle("Volume by Price");

  
    askForInput();
    var x=0;
    fpArray[x] = new FunctionParameter("LineColor1", FunctionParameter.COLOR);
    with(fpArray[x++]){
        setName("Up Volume Color");
        setDefault(Color.RGB(255,160,160)); 
    }    

    fpArray[x] = new FunctionParameter("LineColor2", FunctionParameter.COLOR);
    with(fpArray[x++]){
        setName("Down Volume Color");
        setDefault(Color.grey);
    }    


    fpArray[x] = new FunctionParameter("TextColor1", FunctionParameter.COLOR);
    with(fpArray[x++]){
        setName("Up Volume Text Color");
        setDefault(Color.black);
    }    

    fpArray[x] = new FunctionParameter("TextColor2", FunctionParameter.COLOR);
    with(fpArray[x++]){
        setName("Down Volume Text Color");
        setDefault(Color.white);
    }    

    
    fpArray[x] = new FunctionParameter("Width", FunctionParameter.NUMBER);
    with(fpArray[x++]){
        setName("Price Range (Big Point)");
        setLowerLimit(0.01);        
        setDefault(1);
    }

    fpArray[x] = new FunctionParameter("BarsAgo", FunctionParameter.NUMBER);
    with(fpArray[x++]){
        setName("Bars Ago");
        setLowerLimit(1);        
        setDefault(200);
    }

    fpArray[x] = new FunctionParameter("ViewValue", FunctionParameter.BOOLEAN);
    with(fpArray[x++]){
        setName("Display Volume Value");
        setDefault(false);
    }    


}

var aCumVolumes = new Array();
var aDownVolumes = new Array();
var nMaxValueCumVolumes = 0;
var nMinPosition = 0;
var nMult = 0;
var nHighest = 0;
var nLowest = 0;
var nMaxCount = 0;

function main(BarsAgo, Width, LineColor1, LineColor2, TextColor1, TextColor2, ViewValue) {
var nLeft = BarsAgo;
var nArrayPosition = 0;
var nXAllVol = 0;
var nXDownVol = 0;
var nState = getBarState();
var bFind = false;


    if (getNumBars() <= BarsAgo) return;

    if (nState == BARSTATE_NEWBAR) {
        if (isLastBarOnChart()) {
            nHighest =  my_highest(BarsAgo);
            nLowest =   my_lowest(BarsAgo);
            if (nLowest == null || nHighest == null) {
                return;
            } 
        }
    }

    if (nState == BARSTATE_NEWBAR) {
        if (isLastBarOnChart()) {
            nMaxCount = Math.round(nHighest / Width);
            nMinPosition = Math.round(nLowest / Width);
            nMinPosition = nMinPosition - 1;

            ClearArray(nMaxCount);
            for (var i = 0; i <= BarsAgo; i++) {
                bFind = false;
                nArrayPosition = nMinPosition;
                while (bFind == false) {
                    if (close(-i) > nArrayPosition * Width && close(-i) <= (nArrayPosition * Width) + Width) {
                        bFind = true; 
                    } else {
                        nArrayPosition++;
                    }    
                }
    
                if (nArrayPosition <= nMaxCount) {
                    aCumVolumes[nArrayPosition] += volume(-i); 
                    if (open(-i) - close(-i) > 0) {
                        aDownVolumes[nArrayPosition] += volume(-i);
                    }
                    if (nMaxValueCumVolumes < aCumVolumes[nArrayPosition]) {
                        nMaxValueCumVolumes = aCumVolumes[nArrayPosition];
                        nMult = Calc_Mult(nMaxValueCumVolumes, BarsAgo);            
                    }    
                }    
            }    
        } 
    }


if (nState == BARSTATE_NEWBAR) {
    if (isLastBarOnChart()) {
        for (var i = 0; i < nMaxCount; i++){
            if (aCumVolumes[i] != 0) {
                nXAllVol = Math.round(aCumVolumes[i] / nMult);
                nXDownVol = Math.round(aDownVolumes[i]  / nMult);      
                for (var j = BarsAgo - nXDownVol; j >= Math.round(BarsAgo - nXAllVol); j--) {
                    drawLineRelative( -j  , i * Width, -j   ,  i * Width + Width, PS_SOLID , 2, LineColor1, "LineVCum"+j+i); 
                }
                if (ViewValue ==  true) {
                    drawTextRelative( -nLeft + 15, i * Width + Width, "V = "+(aCumVolumes[i] - aDownVolumes[i]), TextColor1,
                    LineColor1, Text.ONTOP | Text.CENTER, "Courier New", 10 , "Text"+i); 
                }
        
        
                for (var j = nLeft; j >= Math.round(BarsAgo - nXDownVol); j--) {
                    drawLineRelative( -j  , i * Width, -j   ,  i * Width + Width, PS_SOLID , 2, LineColor2, "LineV"+j+i); 
                }
                if (ViewValue ==  true) {
                    drawTextRelative( -nLeft + 15 , i * Width + (Width / 2),  "V = "+aDownVolumes[i], TextColor2,  
                    LineColor2, Text.ONTOP | Text.CENTER, "Courier New", 10 , "Text2"+i); 
                }    
            }
        }
    
        for (var i = 0; i < nMaxCount; i++){
            if (aCumVolumes[i] != 0) {
                drawLineRelative( -nLeft , i * Width, 10, i * Width, PS_DASH , 2, Color.white, "Line0"+i); 
            }    
            DrawFirst = false;    
        }
    }
}
 
    return;

}

function ClearArray(nMaxCount){
    for (var i = 0; i <= nMaxCount; i++) {
        aCumVolumes[i] = 0;
        aDownVolumes[i] = 0;
    }
    debugClear();
    clearText();   
    clearLines(); 
    nMaxValueCumVolumes = 0 ;
    return;
}

function Calc_Mult(nValue, nBarsAgo){
var nRes = 0;
   
    nRes = Math.round(nValue / nBarsAgo);
       
    return nRes;
}

function my_highest(nBarAgo){
var nRes = 0;
    for (var i = 0; i <= nBarAgo; i++) {
        if (nRes < close(-i)) nRes = close(-i);
    }
    return nRes;
}

function my_lowest(nBarAgo){
var nRes = close(0);
    for (var i = 0; i <= nBarAgo; i++) {
        if (nRes > close(-i)) nRes = close(-i);
    }
    return nRes;
} 

[demarcog]

emet,

Beautiful piece of code, thanks for sharing it. Any tips on how you use it would be appreciated.

thanks again,

glen

[PTC Man]

Hi emet.

I don't know what is happening but I can't see the indicator on the chart.

I load it but nothing is ploted on daily and intraday charts.

Can you give me any idea on hou to resolve this issue?

Thank you for your help.
Regards

[emet]

Originally posted by PTC Man
Hi emet.

I don't know what is happening but I can't see the indicator on the chart.

I load it but nothing is ploted on daily and intraday charts.

Can you give me any idea on hou to resolve this issue?

Thank you for your help.
Regards

Not sure what can be the reason, it works good for me. The only idea is that Days Ago > than number of bars on the chart.

[PTC Man]

Hi emet.

I've no idea what happened but it's working now

Anyway, this is very good.

One question, is it possible to have a specific version for intraday charts?

Instead of using days ago , is it possible for the formula to recognize each session day - intraday session - and plot the price by volume for that day?

Basically what I want is to be able to see the price by volume for the day in a intraday chart - any time interval and not only for today but also for the past days.

I tried to include an image so you could see more clearly what i'm requesting but the image attach option isn't working. I selected the image but it wasn't posted

Regards

[ACM]

PTC Man

Basically what I want is to be able to see the price by volume for the day in a intraday chart - any time interval and not only for today but also for the past days.

In this thread you can find a script that does what you describe
Alex