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[amibroker] Re: BB Indicator values for same bar change when scrolling chart


  • Date: Sat, 19 Dec 2009 15:49:56 -0000
  • From: "cvanhaesendonck" <carl.van@xxxxxxxxxx>
  • Subject: [amibroker] Re: BB Indicator values for same bar change when scrolling chart

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Hey guys, sorry to insist on the below as nobody answered. Perhaps will I be luckier this time - pls read:

--- In amibroker@xxxxxxxxxxxxxxx, "cvanhaesendonck" <carl.van@xxx> wrote:
>
> Very strange here: I just applied an indicator on an indicator, in this case Bollinger Band on RMI indicator. When, and only when, the B bands are squeezing, do I have this: the value of the BBand top and bottom totally change, FOR THE SAME BAR, when I scroll the chart a little bit to the left or to the right. No only does the value changes but I can see the change on the chart with the BBand having its shape modified.
> Below is the formula, can someone explain this ???
> 
> Many thanks,
> Carl
> 
> _SECTION_BEGIN("RMI");
> 
> period = Param( "Period", 20, 1, 200, 1 );
> momentum = Param( "Momentum", 5, 1, 200, 1 );
> uplevel=Param("uplevel",66,50,100,1);
> downlevel=Param("downlevel",34,0,50,1);
> Plot( RMI(period, momentum), _DEFAULT_NAME(), ParamColor( "Color", colorBlack ), ParamStyle("Style"),0,-1  );
> PlotOHLC( RMI(period, momentum),RMI(period, momentum),50,RMI(period, momentum), "", IIf( RMI(period, momentum) > 50, colorGreen, colorRed ), styleCloud | styleClipMinMax, downlevel, uplevel,0,-1 ); 
> 
> Plot( uplevel, _DEFAULT_NAME(), colorGreen, styleDashed  );
> Plot( downlevel, _DEFAULT_NAME(), colorGreen, styleDashed  );
> 
> 
> _SECTION_END();
> 
> _SECTION_BEGIN("Bollinger Bands");
> P = ParamField("Price field",-1);
> Periods = Param("Periods", 20, 2, 300, 1 );
> Width = Param("Width", 2, 0, 10, 0.05 );
> //Color = ParamColor("Color", colorBlack );
> Style = ParamStyle("Style");
> Plot( BBandTop( P, Periods, Width ), "BBTop" + _PARAM_VALUES(), colorWhite, Style ); 
> Plot( BBandBot( P, Periods, Width ), "BBBot" + _PARAM_VALUES(), colorWhite, Style ); 
> Plot( MA( P, Periods), "Avg" + _PARAM_VALUES(), colorBlack, styleDashed );
> _SECTION_END();
>




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