XYChartAddPoint
- add point to exploration scatter (XY) chart

Exploration / Indicators
(AFL 3.60)


SYNTAX XYChartAddPoint( ''chartname'', ''text'', x, y, color, linecolor = colorDefault )
RETURNS NUMBER
FUNCTION The function adds a data point with specified x,y co-ordinates, text description and point color to the exploration (XY) scatter chart defined by ''chartname'' parameter.

If chart with given name does not exists already it creates a scatter chart tab in the New Analysis Exploration output window.

Returns 1 (true) on success (when point was added), or 0 (false) on failure - for example when x or y arguments were Null

More on XY charts in explorations can be read in the Tutorial: How to create your own exploration

EXAMPLE // XY chart coding example
// This formula generates 2 X-Y scatter charts that display relationship between
// final trade profit and MFE and MAE

Buy = Cross( MACD(), Signal());
Sell = Cross( Signal(), MACD() );
Short = False;
Cover = False;

Eq =
Equity( 1 ); // single-security equity  this evaluates stops (if you use them) and removes extra signals

Entry =
Buy OR Short;
EqAtEntry =
ValueWhen( Entry, Eq );
Profit =
100 * ( Eq - EqAtEntry ) / EqAtEntry; // percent profit

// MAE and MFE below use CLOSING equity, MAE and MFE in the report use high/low price
MAE =
100 * ( LowestSince( Entry, Eq ) - EqAtEntry ) / EqAtEntry; // percent MAE
MFE =
100 * ( HighestSince( Entry, Eq ) - EqAtEntry ) / EqAtEntry; // percent MAE

bi =
BarIndex();

Len = bi -
ValueWhen( Entry, bi );

EntryPrice =
ValueWhen( Entry, BuyPrice );
// if you prefer MAE/MFE using high/low price
// uncomment the lines below (long only Version)
MAE =
100 * ( LowestSince( Entry, Low ) - EntryPrice ) / EntryPrice ; // percent MAE using low
MFE =
100 * ( HighestSince( Entry, High ) - EntryPrice ) / EntryPrice ; // percent MAE using high

Exit =
Sell OR Cover;
dt =
DateTime();
Clr =
ColorHSB( Status("stocknum"), 255, 255 );
for( bar = 0; bar < BarCount; bar++ )
{
    
if( Exit[ bar ] )
     {
      
// item text consists of two parts
      
// first part (before t) is a item name displayed immediatelly on XY chart
      
// second part (after t) is a tooltip hint text that is displayed in the tooltip
      
// when you hover on given item
      
// here we will only use hint text
         HintText =
"t" + Name()+"@"+ DateTimeToStr( dt[ bar ] );

        
XYChartAddPoint( "Profit vs MAE", HintText, MAE[ bar ], Profit[ bar ],Clr );
        
XYChartAddPoint( "Profit vs MFE", HintText, MFE[ bar ], Profit[ bar ], Clr );
        
XYChartAddPoint( "Profit vs trade length", HintText, Len[ bar ], Profit[ bar ], Clr );
     }
}

XYChartSetAxis( "Profit vs MAE", "[MAE]", "[Profit]" );
XYChartSetAxis( "Profit vs MFE", "[MFE]", "[Profit]" );
XYChartSetAxis( "Profit vs trade length", "[Length]", "[Profit]"  );


Filter = Exit;
AddColumn( Eq, "Equity" );
AddColumn( Profit, "Profit" );
AddColumn( MAE, "MAE" );
AddColumn( MFE, "MFE" );
AddColumn( Len, "trade length" );
SEE ALSO XYChartSetAxis() function

References:

The XYChartAddPoint function is used in the following formulas in AFL on-line library:

More information:

Updated on-line reference