Horizontal Line Alert

[cryfgg]

I need assistance adding an alert to a Draw.HorizontalLine If the condition below is met. (when 20ma Crosses over 50ma):

if ((CrossAbove(EMA5, EMA3, 1))
&& (EMA5[1] <= EMA3[1])
&& (EMA5[2] < EMA3[2]))

{

If the above condition is met; I want to add a Horizontal Line at the price at which the crossover occurred (i.e. 20ma >= 50ma for bullish crossover or 20ma<= 50ma for bearish). I also want to be alerted whenever price pulls back and touches the horizontal line.

Draw.HorizontalLine(....);

}

See attached image for more clarification.

[NinjaTrader_ChrisL]

Hi cryfgg, thanks for posting. If the script is running OnBarClose, the condition will trigger on the first tick of the next bar, so you will need to draw the line using the Close[1] price to reference the price the cross happened at. Otherwise, you will need to run the script OnEachTick to get the exact price the cross happens on. To add an alert to the line, you can save the price where you draw the line and call the Alert() method when Close[0] == SavedPrice, or when Close[0] crosses above/below using the CrossAbove/CrossBelow methods. It can all be done using C# logic e.g.

private double savedPrice;
private bool isLineDrawn = false;

OnBarUpdate()
{
    if(<condition>)
    {
        Draw.HorizontalLine(..., Close[1], ...);
        isLineDrawn = true;
        savedPrice = Close[1];
    }

    if(isLineDrawn && CrossBelow(Close, savedPrice))
    {
        Alert("myAlert", Priority.High, "Reached threshold", NinjaTrader.Core.Globals.InstallDir+@"\sounds\Alert4.wav", 10, Brushes.Black, Brushes.Yellow);
    }
}

[cryfgg]

I made the changes based on your recommendation, but it doesn't work quite well because the alert also triggers when price did not crossover the <savedPricevariable>. Below is my code; plus I've added "// - comment syntax" to some variation of my code in an effort to fix this issue:

 if ((CrossAbove(EMA5, EMA3, 1)) 
&& (EMA5[1] <= EMA3[1])
&& (EMA5[2] < EMA3[2]))

{
   Alert(...);
   Draw.HorizontalLine(this, @"Horizontal Line_1", EMA3[0], false,"hori");
   isLineDrawn = true;
   savedPrice = EMA3[0];
}


// if(isLineDrawn && CrossBelow(Close, savedPrice, 1)
// && High[1] >= savedPrice
if (Close[0] <= savedPrice
&& (Close[1] >= savedPrice))

{
   Alert(....);
}



if ((CrossBelow(EMA5, EMA3, 1)) //(CrossBelow(MACD2.Default, MACD2.Avg, 4))
&& (EMA5[2] >= EMA3[2])
&& (EMA5[3] > EMA3[3]))

{
   Alert(....);
   Draw.HorizontalLine(this, @"Horizontal Line_1", EMA3[0], false,"hori");
   isLineDrawn = true;
   savedPrice = EMA3[0];
}

[NinjaTrader_ChrisL]

Hi cryfgg, thanks for the follow up.

The best way to solve unexpected results is to use Print to see why a condition becomes true when it does. This can help to bridge the gap between expected results and actual results e.g.


if (Close[0] <= savedPrice && (Close[1] >= savedPrice))
{
Print("Alert Triggered");
Print("Close[0] " + Close[0]);
Print("Close[1] " + Close[1]);
Print("savedPrice" + savedPrice);
Alert(....);
}

Another good tool to use is boolean variables that can act as switches that can be turned on and off as I showed with IsLinedrawn.

Kind regards,
-ChrisL

[cryfgg]

Thanks... i was able to figure out the issue.

Thanks