What needs to be done to implement plot signal from custom indicator

[tkaboris]

Hi i would like to add a condition to my strategy to enter when signal is in red, blue, yellow or green for example. I am not sure what needs to be done to call that indicator in the strategy..

https://ninjatraderecosystem.com/user-app-share-download/adx-trend-regions/

[NinjaTrader_ChrisL]

Hello, thanks for writing in. All indicator have the PlotBrushes property where the plot color can be read/set per bar:

https://ninjatrader.com/support/help...lotbrushes.htm //e.g. PlotBrushes[0][0] is the latest bar of the first added plot.

Typically the color changes based on some underlying condition, so you could also replicate the condition that is changing the color of the plot rather than reading the color e.g.

if(Close[0] > Close[1])
PlotBrushes[0][0] = Brushes.Green;

[tkaboris]

Thank you. I am still confused if i put if how will strategy know how these plots coming from this particular custom indicator?
Do you have an example where strategy uses indicators values?
(Close[0] > Close[1])
PlotBrushes[0][0] = Brushes.Green;

Ok Update.
I am trying to get signals from trend magic indicator. I added this but its compalining no overload method trenmagic takes 0 arguments. I just want buy when gree, sell when red logic in strategy

https://ninjatraderecosystem.com/user-app-share-download/trend-magic/

else if (State == State.DataLoaded)
{
{
ClearOutputWindow(); //Clears Output window every time strategy is enabled
}
AddChartIndicator(TrendMagic());

[NinjaTrader_ChrisL]

Hi, the SampleMaCrossover strategy built into the platform exemplifies how you set up Indicator objects in a script. This would be the best reference on how to initialize other indicators within your script.

Kind regards,

-ChrisL

[tkaboris]

NinjaTrader_ChrisL
i have
private TrendMagic myTM;
myTM = TrendMagic();

In my strategy on BarUpdate i am trying to access BullBrush to see if it can access it but it get "canno immplicitly convert type System.windows.media.brush to bool

if(myTM.BullBrush)
{
Print("bull brush is true");
}

[NinjaTrader_ChrisL]

Hi, the SampleMACrossover strategy show you how you set up indicators within another script. E.g. if you do Right click>Save As on this script to make a copy of it you can add extra Prints to it to see the data being produced by the SMA indicator.

[tkaboris]

I found someone already implemented plotting for trendmagic indicator for strategy. However he didnt implement plotting for when CCI is used. can someone help me to plot those as well?

protected override void OnStateChange()
        {
            if (State == State.SetDefaults)
            {
                Description                        = @"An ATR based trendline regulated by the position of CCI and its zero line.";
                Name                            = "TrendMagic";
                IsOverlay                        = true;
                IsSuspendedWhileInactive        = true;
                cciPeriod                         = 20;
                atrPeriod                         = 14;
                atrMult                            = 1.0;
                useCciTrendColor                = false;
                BullBrush                        = Brushes.Lime;
                BearBrush                        = Brushes.Red;
                AddPlot(new Stroke(Brushes.Orange, 2), PlotStyle.Line, Name);
[B] AddPlot(Brushes.Transparent, "Trend Output");
                AddPlot(Brushes.Transparent, "Buy/Sell Output");[/B]
            }
            else if (State == State.DataLoaded)
            {
                Trend[0] = 0;
                lineColor = new Series<double>(this);
            }
        }


        protected override void OnBarUpdate()
        {
            if (CurrentBar < cciPeriod || CurrentBar < atrPeriod)
                return;

            cciVal = CCI(Close, cciPeriod)[0];
            atrVal = ATR(Close, atrPeriod)[0];

            upTrend = Low[0] - atrVal * atrMult;
            downTrend = High[0] + atrVal * atrMult;

            if (cciVal >= 0)
                if (upTrend < Trend[1])
                    Trend[0] = Trend[1];
                else
                    Trend[0] = upTrend;
            else
                if (downTrend > Trend[1])
                    Trend[0] = Trend[1];
                else
                    Trend[0] = downTrend;

[B] TrendOutput[0] = Trend[0] > Trend[1] ? 1 : Trend[0] < Trend[1] ? -1 : TrendOutput[1];
            BuySellOutput[0] = TrendOutput[0] == 1 && TrendOutput[1] != 1 ? 1 : TrendOutput[0] == -1 && TrendOutput[1] != -1 ? -1 : 0;[/B]

            if (useCciTrendColor)
                lineColor[0] = cciVal > 0 ? 1 : -1;
            else
                lineColor[0] = TrendOutput[0];

            PlotBrushes[0][0] = lineColor[0] == 1 ? BullBrush : BearBrush;    
        }​