Bollinger and CalculateOnBarClose = false

[fisagol]

Hello everyone, I 'm trying to do a simple indicator Bollinger Bands and the option of CalculateOnBarClose = false. I want to detect when the price touches the upper band and also detect when the price touches the lower band.

When the price first touches the upper Bollinger band I want to mark it with an arrow:


This part I do so:

if ((CrossAbove(Close, Bollinger(stddev,period).Upper, 1)))
{

DrawArrowUp(CurrentBar.ToString(), true, 0, GetCurrentAsk();, Color.DodgerBlue);
}

When the price first touches the lower Bollinger band I want to mark it with an arrow:


This part I do so:

if (CrossBelow(Close, Bollinger(stddev,period).Lower, 1))
{
DrawArrowDown(CurrentBar.ToString(), true, 0, GetCurrentBid(), Color.Fuchsia) ;
}

But doing so what I get is that whenever the price hits the upper or lower Bollinger band draws an arrow, and this is not exactly what I want.


I want exactly, when the price first touches the upper Bollinger band draw an arrow . And not redraw an upward arrow until it has not produced before a downward arrow.

For example , it is well to understand what I want, An upward arrow and the next arrow is to be drawn can not be bullish must be a downward arrow is drawn.

ThankYou very much!

[NinjaTrader_PaulH]

Hello fisagol,

Thanks for your post.

This can be handled by using bool logic in each of the conditions. We can use 2 bool variable to control this. Lets call them upArrowDrawn and downArrowDrawn, they would need to be initialized to true in the variable declarations area.

if ((CrossAbove(Close, Bollinger(stddev,period).Upper, 1)) && downArrowDrawn) 
{

DrawArrowUp(CurrentBar.ToString(), true, 0, GetCurrentAsk();, Color.DodgerBlue);
downArrowDrawn = false;  // set to false to prevent any further up arrows
upArrowDrawn = true;       // set to true so next arrow drawn would be down arrow
}

if (CrossBelow(Close, Bollinger(stddev,period).Lower, 1) && upArrowDrawn) 
{
DrawArrowDown(CurrentBar.ToString(), true, 0, GetCurrentBid(), Color.Fuchsia) ;
upArrowDrawn = false;     // set to false to prevent further down arrows
downArrowDrawn = true;  // set to true so next arrow drawn will be up arrow.
}

[fisagol]

Thank you very much for the reply, I had not occurred!.