Publicly expose the value of the horizontal line so it can be read by an indicator

[Rainmakersg]

Hi,

I am referring to this indicator created by Chris L:

https://ninjatraderecosystem.com/user-app-share-download/labeled-horizontal-lines/

Is it possible to publicly expose the value of the horizontal line so it can be read by an indicator of another chart?

I am manually drawing a horizontal line on ES. I am trying to use Ninjascript plot a horizontal line of the same level on MES, so it is synced. When the line of the ES is moved, the line on the MES moves accordingly.


Appreciate your advice on how the above can be done.

Thanks so much.

[NinjaTrader_ChrisL]

Hello, thanks for writing in. The only way you could span your drawing objects between different instruments is to save the price value to a .txt file and have the other indicator read the same file and draw the price level. There is an example of using a System Input/Output here:

https://ninjatrader.com/support/help...system_io_file _propertie.htm

I also found this example that should be helpful:

https://ninjatraderecosystem.com/user-app-share-download/rgbpricelines/

Kind regards,

-ChrisL



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[Rainmakersg]

Hi Chris,

Thanks so much for your speedy reply, and thanks for your suggested method.

My worry is that the read/write takes time and it is not as instantaneous if the processing is done in RAM.

Can you advise any way to fix the following (if it can be fixed at all):

Relevant code:

.
.
.

HorizontalLine HLine;
private double SenderHL;
.
.
.

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{

foreach (Gui.NinjaScript.IChartObject thisObject in ChartPanel.ChartObjects)
{
if(thisObject is NinjaTrader.NinjaScript.DrawingTools.HorizontalLin e)
{
HLine = thisObject as NinjaTrader.NinjaScript.DrawingTools.HorizontalLin e;

SenderHL = HLine.StartAnchor.Price;

}
}

}
.
.
.

public double PublicSenderHL

{
get
{
Update();
return SenderHL;
}
}

[NinjaTrader_ChrisL]

Hi, If you want to do it from in-memory, I have an example on setting up a property changed event that other indicators can subscribe to:

https://ninjatrader.com/support/forum/forum/ninjatrader-8/indicator-development/103089-mysharedmethodsaddonexample