How to place ADDBAND to volume MA

[earlinarizona]

If you take the Builtin "Volume MA" EFS

function main(nInputLength) {
if(nInputLength == null)
nInputLength = 10;

var nLength = nInputLength;
var i;
var vSum = 0.0;
var vValue;

vValue = volume(0, -nLength);

if(vValue == null) {
return;
}

for(i = 0; i < nLength; i++) {
vSum += vValue[i];
}

return (vSum / nLength);

How would you add "addband" to this formula. I like to place 1 or 2 mental guide lines on the study so it gives me a good idea of how things are doing.

[dloomis]

addBand(80.0, PS_SOLID, 1, Color.red, 1);

will place a red solid band at 80,

addBand()

addBand( dValue, nStyle, nThickness, Color, TagName )


· dValue: y-axis value to place the band
· nStyle: the pen style to draw with
· nThickness: thickness of the line (in pixels)
· Color: a RGB color value
· TagName: A unique identifier for this text object.

Example:

addBand(80.0, PS_SOLID, 1, Color.red, 1);

Pen Styles

Colors

[ACM]

Earl
The enclosed code will add two bands to the indicator and will enable you to set their values through Edit Studies.
This way you don't have to use the Editor every time you want to add/change/delete bands.
Alex

function preMain() {
  
    setPriceStudy(false);
    setStudyTitle("maVol");
    setCursorLabelName("maVol", 0);
    setDefaultBarStyle(PS_SOLID, 0);
    setDefaultBarFgColor(Color.black, 0);
    setDefaultBarThickness(1, 0);
    setPlotType(PLOTTYPE_LINE, 0);
        
    var fp1 = new FunctionParameter("MALength", FunctionParameter.NUMBER);
    fp1.setLowerLimit(1);        
    fp1.setDefault(10);
    
    var fp2 = new FunctionParameter("Band1", FunctionParameter.NUMBER);
    fp2.setLowerLimit(0);        
    fp2.setDefault(0); 
    
    var fp3 = new FunctionParameter("Band2", FunctionParameter.NUMBER);
    fp3.setLowerLimit(0);        
    fp3.setDefault(0); 
    
}

function main(MALength,Band1,Band2) {

    var nLength = MALength;
    var i;
    var vSum = 0.0;
    var vValue;

    vValue = volume(0, -nLength);

    if(vValue == null) {
    return;
   }
  
    for(i = 0; i < nLength; i++) {
        vSum += vValue[i];    
    }
   
    addBand(Band1,PS_SOLID,1,Color.blue,1);       
    addBand(Band2,PS_SOLID,1,Color.red,2);   
  
    return Math.round(vSum/nLength); 

}