Add a colour fill in the area above/below the indicator line

[burtoninlondon]

Hello,

I am developing an oscillating indicator (similar to RSI) and I want to add a fill colour as below:

• When indicator is above zero, the area below the indicator and above the zero line will be filled with a green colour
• When indicator is below zero, the area above the indicator and below the zero line will be filled with a red colour

Can you please point me in the right direction on how I would achieve this.

Thanks,

Neil

[NinjaTrader_Jesse]

Hello burtoninlondon,

That sounds like the Region tool would be a good match for what you described, that colors areas between series.

https://ninjatrader.com/support/helpGuides/nt8/draw_region.htm

The region tool has a parameter set that allows for a Plot and a value so you could for example color between 0 and a plot value.

[burtoninlondon]

NinjaTrader_Jesse , thanks for your response but I'm struggling with understanding the syntax of the DrawRegion() function, can I ask for further help?

First thing is, where do I place this command? Should I position it in OnStateChange() \ State.SetDefaults? This is where I have my AddPlot for my oscillator.

Do you have a sample line of code using a data series which I can take a look at? The example in the help guide doesn't refer to a data series.

I've added my code below...

AddLine(Brushes.White, 0, "ZLINE");
AddPlot(Brushes.Orange, "series1");
Draw.Region(this, "series1", CurrentBar, 0, RRSseries, 0, Brushes.Blue, 50);

Thanks for your help.

Neil

[NinjaTrader_Jesse]

Hello burtoninlondon,

The Region tool is a drawing tool so that needs to be used from OnBarUpdate.

When you call a region tool you need to supply the BarsAgo and the series so it knows where to color. You can find an example of coloring between two plots here: https://ninjatraderecosystem.com/use...el-with-color/



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[burtoninlondon]

NinjaTrader_Jesse, thanks for your continued help.

I'm still struggling with this...I have stripped back the example you linked so that I could try to understand how it works. In my example I'm trying to fill the zone between a line at 1 and a line at 10. When I add the indicator to the main panel (where the price action is displayed), the region draws as I'd like it to. If I move the indicator to a new panel (where ultimately my indicator will be) separate from the price action main panel the lines for 1 & 10 are drawn in the new panel but the region is drawn in the main panel.



My code is as below...

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = NinjaTrader.Custom.Resource.NinjaScriptIndicatorDe scriptionKeltnerChannel;
Name = "FillTest";
IsOverlay = true;
IsSuspendedWhileInactive = true;

AddPlot(Brushes.DodgerBlue, NinjaTrader.Custom.Resource.NinjaScriptIndicatorUpper);
AddPlot(Brushes.DodgerBlue, NinjaTrader.Custom.Resource.NinjaScriptIndicatorLower);
}
else if (State == State.DataLoaded)
{
}
}

protected override void OnBarUpdate()
{
double upper = 58;
double lower = 54;

Upper[0] = upper;
Lower[0] = lower;

Draw.Region(this, "FillTest", CurrentBar, 0, Upper, Lower, null, Brushes.RoyalBlue, 40, 0);
}

#region Properties
[Browsable(false)]
[XmlIgnore()]
public Series<double> Lower
{
get { return Values[1]; }
}

[Browsable(false)]
[XmlIgnore()]
public Series<double> Upper
{
get { return Values[0]; }
}
#endregion
}

Any help is appreciated on how I can draw the region in the new panel.

Thanks,

Neil

[NinjaTrader_Jesse]

Hello burtoninlondon,

Because this is a drawing tool if you want it to draw in the indicator panel you also need to turn off DrawOnPricePanel: https://ninjatrader.com/support/help...sub=pricepanel

[burtoninlondon]

That works, thanks.