Cond Background
AFL code in Amibroker can be utilized to define conditional background colors on price charts. This feature helps traders visualize specific market conditions and can be applied to highlight trend changes, support and resistance levels, or other critical price events. Amibroker data is essential for ensuring accurate background color changes based on market conditions.
_SECTION_BEGIN("Conditional Chart Background");
//by detwo of traderjj.com
P = ParamField("Price field", 3);
Periods = Param("Periods MA", 21, 2, 300, 1);
Buycond = C > MA(C, Periods);
bgmode = ParamToggle("Single Background Color","YES|NO", 1);
for(i = 0; i < BarCount; i++)
{
if(Buycond[i])
bgcolor[i] = ParamColor("Background Color Top Buy", colorGreen);
else
bgcolor[i] = ParamColor("Background Color Top Sell", colorRed);
if(bgmode)
SetChartBkGradientFill( bgcolor[i], ParamColor("Background Color Bottom", colorWhite), bgcolor[i] );
else
SetChartBkGradientFill( bgcolor[i], bgcolor[i], bgcolor[i] );
}
SetChartOptions(0, chartShowArrows|chartShowDates);
SetChartBkColor( ParamColor("Background Color Axes", colorBlack) );
upcolor = ParamColor("Up Bar color ", colorWhite);
downcolor = ParamColor("Down Bar color ", colorBlack);
Coloutline = ParamColor("(Out-)Line Color", colorBlack);
barcolor = IIf(Close > Ref(Close, -1), upcolor, downcolor);
gps = GetPriceStyle();
style = gps | styleNoTitle | styleThick;
SetBarFillColor(barcolor);
if(gps == styleBar)
Plot( C, " " , barcolor, style );
else
Plot( C, " " , Coloutline, style );
Colortitle = ParamColor("Color of Title", colorBlack);
_N(Title = StrFormat(EncodeColor(Colortitle) + Name() + " - {{INTERVAL}} - {{DATE}} Open=%g, Hi=%g, Lo=%g, Close=%g (%.1f%%) {{VALUES}}", O, H, L, C, SelectedValue( ROC( C, 1 ) ) ));
_SECTION_END();
_SECTION_BEGIN("EMA");
Plot( EMA( P, Periods ), _DEFAULT_NAME()+"("+periods+")", ParamColor( "Color MA", colorBlack ), ParamStyle("Style MA") );
_SECTION_END();