Adding Horizontal Line to indicator /Ninjascript

September 9th, 2020, 05:57 PM

I am trying to customize the ninjascript code on a stock RVI indicator in NT8. All I want to do is add 3 more horizontal lines. So that I have the 70, 60, 40, 30 levels marked. The stock RVI indicator has one horizontal line, called the signal line, that functions as one of them. How can I add in 3 more horizontal lines, with specific width, dash style and color? I've tried manually adding code in and nothing happens.

Secondly, although I have created a copy of the original code and saved as a new indicator, when I go to the chart to add the indicator, it is not an option in the list. Do I have to do something after writing a new indicator code to make it be added to the indicator list?

Thanks!

September 9th, 2020, 06:38 PM

jgivler

I am trying to customize the ninjascript code on a stock RVI indicator in NT8. All I want to do is add 3 more horizontal lines. So that I have the 70, 60, 40, 30 levels marked. The stock RVI indicator has one horizontal line, called the signal line, that functions as one of them. How can I add in 3 more horizontal lines, with specific width, dash style and color? I've tried manually adding code in and nothing happens.

Secondly, although I have created a copy of the original code and saved as a new indicator, when I go to the chart to add the indicator, it is not an option in the list. Do I have to do something after writing a new indicator code to make it be added to the indicator list?

Thanks!

The absolute easiest way to do this is is to add the lines you want to the panel you want via the Constant lines indicator that comes stock with NT8. Else, you can just copy the RVI indicator and add the code to give you the lines.

ES 09-20 (2000 Tick) 2020_09_09 (4_37_03 PM)

September 9th, 2020, 06:45 PM

Add the lines which are in Bold and compile your script or just press F5 to compile then you should see it in your list of indicators. Basically, each time you add a line via the AddLine command, Ninja adds it in a special collection names Lines[] which holds all the lines created in the script. Since there was already one line to represent the 50 level and the two other lines then the Lines[] collection contains 3 items.

You can modify the properties of a line by using this collection like this:

Lines[1].Width = 2;
Lines[1].DashStyleHelper = DashStyleHelper.Dash;

You can learn a bit more by visiting this page:
https://ninjatrader.com/support/helpGuides/nt8/lines.htm

Code

		protected override void OnStateChange()
		{
			if (State == State.SetDefaults)
			{
				Description					= NinjaTrader.Custom.Resource.NinjaScriptIndicatorDescriptionRVI;
				Name						= "myNewRVI";
				IsSuspendedWhileInactive	= true;
				Period						= 14;
				IsOverlay					= false;

				AddPlot(Brushes.Goldenrod,		NinjaTrader.Custom.Resource.NinjaScriptIndicatorNameRVI);
				AddLine(Brushes.DarkGray,	50,	NinjaTrader.Custom.Resource.RVISignalLine);
				AddLine(Brushes.Yellow,	30,	"above50");
				AddLine(Brushes.Cyan,	70,	"below50");
			}

			else if (State == State.Configure)
			{
				savedCurrentBar	= -1;
				dnAvgH			= dnAvgL = upAvgH = upAvgL = lastDnAvgH
								= lastDnAvgL = lastUpAvgH = lastUpAvgL = 0;
				Lines[1].Width = 2;
				Lines[1].DashStyleHelper = DashStyleHelper.Dash;
				Lines[2].Width = 2;
				Lines[2].DashStyleHelper = DashStyleHelper.Dash;
		}

September 10th, 2020, 10:28 AM

Thank you guys so much! I learned from both of you. Really appreciate that you took the time to help!!!

Best,
J

Adding Horizontal Line to indicator /Ninjascript

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Adding Horizontal Line to indicator /Ninjascript