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2 Timeframes Candlestick Bar Chart for Amibroker (AFL)
kaiji
almost 10 years ago
Amibroker (AFL)

Rating:
5 / 5 (Votes 1)
Tags:
amibroker

Specially designed for use in day trading AND to save chart space. This chart will displays 2 sets of candlestick bars. One for the time Interval set for your chart- for example 1 Minute. The higher timeframe candlestick bars are created by using gfx Low-level graphics and will display according to the parameters you set- for example 5 minutes.

Then please observe this AFL code uses the function ColorBlend(ColorFrom, ColorTo, Factor) which was introduced in version 5.21 Beta.

By Jorgen Wallgren

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Indicator / Formula

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_SECTION_BEGIN("2 Timeframes Candlestick Bar Chart");
// Specially designed for use in day trading and to save chart space. This chart will displays 2 sets
// of candlestick bars. One for the time interval set for your chart- for example 1 Minute. 
// The higher timeframe candlestick bars are created by using gfx low-level graphics AND will display  
// according to the parameters you set- for example 5 minutes. 

// I got the idea from David's (dbwyatt_1999) 2 Timeframe chart code which was shared by him on the AmiBroker List. 
// It uses TimeFrame functions with the PlotOHLC function using styleCloud. So I was thinking it would look 
// very nice using low-level graphics instead. Little bit more complicated, but I got a few great pointers from Herman!

// If your chart background turns pink- please read the error message in the upper left corner of the chart.
// Then please observe this AFL code uses ColorBlend(ColorFrom, ColorTo, Factor) which was introduced in Version 5.21 beta.
// The rules are simple- time frames from 1 up to 60 minutes AND Lower time frame must be smaller than the Higher time frame.

Version(5.21); 
SetChartOptions(2, chartShowDates);
Title = Name();
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// PARAMETERS AND SETTINGS:
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
ChartLum 		= Param("Chart Background Color Intensity", 0.40, 0, 1, 0.01);
TFMinShort		= Param("Short Timeframe (Minutes)", 1, 1, 60, 1);
TFMinLong 		= Param("Long Timeframe (Minutes)", 5, 1, 60, 1);
OnSTFBars		= ParamToggle("Short TF Bars", "Off, On", 1);
OnLTFBars		= ParamToggle("Long TF Bars", "Off, On", 1);
BarLum1 		= Param("Short TF Bar Color Intensity", 0, 0, 1, 0.01);
BarLum2 		= Param("Long TF Bar Color Intensity", 0.70, 0, 1, 0.01);

SetChartBkColor(ColorBlend(colorLightBlue, colorWhite, ChartLum));
// Bar Colors for the Short Timeframe candlestick bars:
LineColor 		= ColorBlend(colorBlack, colorWhite, BarLum1);
UpBarColor		= ColorBlend(colorBrightGreen, colorWhite, BarLum1);
DnBarColor		= ColorBlend(colorRed, colorWhite, BarLum1);
// Bar Colors For The Long Timeframe candlestick bars:
TFLineColor 	= ColorBlend(colorBlack, colorWhite, BarLum2 - 0.1);
TFUpBarColor	= ColorBlend(colorBrightGreen, colorWhite, BarLum2);
TFDnBarColor	= ColorBlend(colorRed, colorWhite, BarLum2);
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// FUNCTIONS:
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
function GetVisibleBarCount() 
{ 
 lvb = Status("lastvisiblebar"); 
 fvb = Status("firstvisiblebar"); 
 return Min( Lvb - fvb, BarCount - fvb ); 
} 

function GfxConvertBarToPixelX( bar ) 
{ 
 lvb = Status("lastvisiblebar"); 
 fvb = Status("firstvisiblebar"); 
 pxchartleft = Status("pxchartleft"); 
 pxchartwidth = Status("pxchartwidth"); 
 return pxchartleft + bar  * pxchartwidth / ( Lvb - fvb + 1 ); 
} 

function GfxConvertValueToPixelY( Value ) 
{ 
 local Miny, Maxy, pxchartbottom, pxchartheight; 
 Miny = Status("axisminy"); 
 Maxy = Status("axismaxy"); 
 pxchartbottom = Status("pxchartbottom"); 
 pxchartheight = Status("pxchartheight"); 
 return pxchartbottom - floor( 0.5 + ( Value - Miny ) * pxchartheight/ ( Maxy - Miny ) ); 
} 

StaticVarKey = Name();
procedure xStaticVarSet(SName, SValue)
{
 global StaticVarKey;
 if (StaticVarKey != "")
 	StaticVarSet(Sname + StaticVarKey, Svalue);
}
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
// MAIN PROGRAM:
//XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
if(Interval() != TFMinShort * 60)
{
 Title = Title + "\n" + "\n" + "ALERT, ALERT, ALERT!!!" + "\n" + "Set the chart time Interval to: " + NumToStr(TFMinShort, 1.0, 1) + 
					" Minute(s) or change the Short Timeframe Parameter setting.";
 OnSTFBars		= 0;
 OnLTFBars		= 0;
 SetChartBkColor(colorRose);
} 

if(TFMinShort >= TFMinLong)
{
 Title = Title + "\n" + "\n" + "ALERT, ALERT, ALERT!!!" + "\n" + "The Long
Timeframe setting must be longer than the Short Timeframe!";
 OnSTFBars		= 0;
 OnLTFBars		= 0;
 SetChartBkColor(colorRose);
}

if(OnSTFBars)
{
 BarColor		= IIf(Close > Open, UpBarColor, DnBarColor);
 SetBarFillColor(BarColor);
 Plot(Close, "", LineColor, styleCandle);
}
else
 Plot(Close, "", colorBlack, styleCandle  | styleNoDraw);

TFSec = in1Minute * TFMinLong; 
TimeFrameSet(TFSec); 
TFOpen 			= Open; 
TFHigh 			= High; 
TFLow 				= Low; 
TFClose			= Close; 
TFBarIndex			= BarIndex();
TFLastBarIndex	= LastValue(BarIndex());
TimeFrameRestore(); 

TFOpen 			= TimeFrameExpand(TFOpen, TFSec, expandFirst); 
TFHigh 			= TimeFrameExpand(TFHigh, TFSec, expandFirst); 
TFLow 				= TimeFrameExpand(TFLow, TFSec, expandFirst); 
TFClose			= TimeFrameExpand(TFClose, TFSec, expandFirst);
TFBarIndex			= TimeFrameExpand(TFBarIndex, TFSec, expandLast + 1);
TFLastBarIndex	= TimeFrameExpand(TFLastBarIndex, TFSec, expandLast + 1);

CandleTop 			= Max(TFOpen, TFClose); 
CandleBottom		= Min(TFOpen, TFClose); 
//============================================================================
// GFX LOW-LEVEL GRAPHICS SECTION.
// DRAWING THE LONG TIMEFRAME CANDLESTICK BARS:
//============================================================================
if(OnLTFBars)
{ 
 GfxSetOverlayMode(1); 
 AllVisibleBars 	= GetVisibleBarCount(); 
 fvb				= Status("firstvisiblebar"); 
 ChartWidth		= GfxConvertBarToPixelX(AllVisibleBars );
 PixBar 			= ChartWidth / AllVisibleBars;
 Adjust			= Pixbar * 0.35;
 TFMinutes 		= TFMinLong / TFMinShort;
 NewTFBar 			= IIf(TFBarIndex != Ref(TFBarIndex, -1), 1, 0);
 BarInd			= BarIndex();
 TFLastBarIndex	= LastValue(TFLastBarIndex);

 // DRAW BAR HISTORY AND THE CURRENT BAR:
 for(i = 0; i < AllVisibleBars; i++) 
 {
  x1 = GfxConvertBarToPixelX(i) * NewTFBar[i + fvb] - Adjust;
  if(BarInd[i + fvb] < TFLastBarIndex AND NewTFBar[i + fvb] == 1)
	 {
		Counter = 0;
		for(n = i + 1; NewTFBar[n + fvb] == 0 AND n + fvb < BarCount-1; n++)
			Counter++;
		x2 = GfxConvertBarToPixelX(i + Counter) * NewTFBar[i + fvb] + 1 + Adjust;
	 }

  if(TFBarIndex[i + fvb] == TFLastBarIndex)
 	x2 = GfxConvertBarToPixelX(i + TFMinutes - 1) * NewTFBar[i + fvb] + 1 + Adjust;

   y1 = GfxConvertValueToPixelY(CandleTop[i + fvb]); 
   y2 = GfxConvertValueToPixelY(CandleBottom[i + fvb]); 
   yH = GfxConvertValueToPixelY(TFHigh[i + fvb]);
   yL = GfxConvertValueToPixelY(TFLow[i + fvb]);

   // Candle Body:
   GfxSelectPen(TFLineColor, 0);
   FillColor = IIf(TFOpen[i + fvb] < TFClose[i + fvb], TFUpBarColor,TFDnBarColor);
   GfxSelectSolidBrush(FillColor); 
   if(y1 == y2){y1 = y1 - Adjust; y2 = y2 + Adjust;
	GfxSelectSolidBrush(TFLineColor);}
   if(x1 > 0){
   		GfxRectangle( x1, y1, x2, y2); 
   		// Candle High and Low:
   		GfxSelectPen(TFLineColor, 2);
   		GfxMoveTo(x2+(x1-x2)/2, y1);
   		GfxLineTo(x2+(x1-x2)/2, yH);
   		GfxMoveTo(x2+(x1-x2)/2, y2);
   		GfxLineTo(x2+(x1-x2)/2, yL);
   		RequestTimedRefresh(0); 
	}
 } 
}
_SECTION_END();

2 comments

1. Mehul Patel

error in afl please solve and update

2. administrator

Hi Mehul this formula is fine it just needs the newest beta of Amibroker.

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