Custom Indicator Plots are shown in DataBox, but not displayed on chart

[Shai Samuel]

Hi,

I wrote an indicator with 2 timeframes (stf,htf). The indicator is calculating many objects (swing, trends, signals, signals setups) and reder them on chart using OnRender. I am using 3 EMAs values (2 of htf, and 1 of stf), they are set as plots with colors and external properties. I can see these 3 plots correct values in the DataBox, but there is no displayed plots, as you can see below (SlowMA0, FastMA1, SlowMA1 are shown with the colors, and correct & in range values in Data Box, but not on Chart):



Here is the relevant code:

public int AddChartPlot(Brush brush, string name)
{
  AddPlot(brush, name);
  return Plots.Count()-1;
}
//...
protected override void OnStateChange()
{
  switch (State)
  {
  //...
  case State.Configure:
    plotSlowMA0 = AddChartPlot(Brushes.Goldenrod, "SlowMA0");
    plotFastMA1 = AddChartPlot(Brushes.White, "FastMA1");
    plotSlowMA1 = AddChartPlot(Brushes.Blue, "SlowMA1");
    //...
    break;
  //...
  }
}

protected override void OnBarUpdate()
{
  int stf = 0;
  int htf = 1;
  if (CurrentBars[stf] <= BarsRequiredToPlot || CurrentBars[htf] <= BarsRequiredToPlot) return;

  if (BarsInProgress == stf || BarsInProgress == htf)
  {
    //...
    SlowMA0[0] = EMA(BarsArray[stf],maPeriod1)[0];
    FastMA1[0] = EMA(BarsArray[htf],maPeriod2)[0];
    SlowMA1[0] = EMA(BarsArray[htf],maPeriod1)[0];
    //...
  }

protected override void OnRender(Gui.Chart.ChartControl chartControl, Gui.Chart.ChartScale chartScale)
{
  if (!IsVisible || ChartBars.ToIndex < BarsRequiredToPlot) return;
  //...
}

[Browsable(false)][XmlIgnore()] public Series<double> SlowMA0 { get { return Values[plotSlowMA0]; } }
[Browsable(false)][XmlIgnore()] public Series<double> FastMA1 { get { return Values[plotFastMA1]; } }
[Browsable(false)][XmlIgnore()] public Series<double> SlowMA1 { get { return Values[plotSlowMA1]; } }

[NinjaTrader_Jesse]

Hello Shai Samuel,

You used OnRender but did not call the base. If you want plots to be visible you still need to call the base.OnRender to have the platforms normal plotting logic happen.

https://ninjatrader.com/support/help...htsub=onrender

ns Calling the base.OnRender() method to ensure Plots are rendered along with custom render logic

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
// call the base.OnRender() to ensure standard Plots work as designed
base.OnRender(chartControl, chartScale);

// custom render logic
}

[Shai Samuel]

Thank you