AFL Library

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Details:

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Description:

This is an inverted plotted volume, displayed at the upper part of the main chart. Just drag and drop this code into your main chart, adjust the moving average and height to your preference.

Formula:

_SECTION_BEGIN("Inverted Plotted Volume Overlay Indicator");
// I was inspired by Dennis Brown's great looking chart, and here is yet
another result.
// This is an inverted plotted volume, displayed at the upper part of the main
chart.
// Just drag and drop this code into your main chart, adjust the moving average
and height to your preference.
Title = "";
PlotVOL 	= ParamToggle( "Plot Volume","Off|On", 1);
Days 		= Param("Days of MA", 1, 0.25, 5, 0.25); 
Height 	= Param("Height", 25, 1, 100, 1) ;

function VisibleMaxValue(Value)
{ // NOTE: Both my VisibleMaxValue & VisibleMinValue is available at the AFL
Library.
 BI							= BarIndex();
 FirstVisibleBarIndex	= Status("FirstvisiblebarIndex");
 FirstVisibleBar     	= FirstVisibleBarIndex == BI;
 HighestVisibleValue		= HighestSince(FirstVisibleBar, Value);
 LastVisibleBarIndex		= Status("LastvisiblebarIndex");
 BlankBars					= SelectedValue(LastVisibleBarIndex - BI);
 LastVisibleBar     		= LastVisibleBarIndex == BI + BlankBars;
 MaxValue 					= LastValue(ValueWhen(Lastvisiblebar, HighestVisibleValue));
 return MaxValue;
}

if(LastValue(Volume) > 0) // In case you are looking at an Index without
volume.
{
 UpBar 	= Close > Open;
 DownBar	= Close < Open;
 VolColor	= IIf(DownBar, colorRed, IIf(UpBar, colorBrightGreen, colorBlue));

 if(PlotVOL)
 {
 Value 	= Volume;
 MaxValue 	= VisibleMaxValue(Value);
 Scale 	= MaxValue/Height; 
 Height 	= Scale;
 Period	= ((6.5 * 3600) / Interval()) * Days;
 AverageVolume	= MA(Value, Period);
 Plot(-AverageVolume/Scale,"", colorBlue, styleNoLabel | styleNoTitle |
styleOwnScale | styleThick, -100, 0);
 Plot(-Value/Scale,"", VolColor, styleNoLabel | styleNoTitle | styleOwnScale |
styleThick | styleHistogram, -100, 0);
 }
}
_SECTION_END();

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