Indicator and BarType

[GaryAlbers]

Is there a way for an indicator to talk to (programatically manipulate) the behavior of a BarType?
Are there any guidelines for how this interaction should look?

Thanks,
Gary

[NinjaTrader_PatrickH]

Hello GaryAlbers,

Thank you for your post.

What behavior do you need from the indicator that the Bar Type class cannot provide?

[GaryAlbers]

Depending on how stretched out the user has the chart, I show different stuff on the chart and sometimes that means I want to draw my own information instead of the bar. To do this in NT 7, I was making the bar colors transparent and then drawing on the chart.
With NT 8 I am trying to determine if there is a more elegant way to have the indicator communicate with the BarType so the logic for hiding the bar can be kept in the BarType rather than the indicator.


Also, there is logic that has traditionally been done in OnMarketData which I think would be better if it were in the BarType. However, that would require the indicator/strategy to query the bartype to get this information so it can make signal decisions based on it.
Another way of asking, is this: can OnMarketData be implemented in BarType and then methods added to return data structures?

Thanks,
Gary

[NinjaTrader_PatrickH]

Hello GaryAlbers,

Thank you for your patience.

You can access the OnMarketData() in the Bar Types. I am still unclear what would need to be ran in the Indicator that could not be done in the Bar Types. You should be able to use OnRender to draw.

[RJay]

Hello GaryAlbers,

Thank you for your patience.

You can access the OnMarketData() in the Bar Types. I am still unclear what would need to be ran in the Indicator that could not be done in the Bar Types. You should be able to use OnRender to draw.

Custom chart program will not compile after adding the following method code.

//------------------------------------------------------------------------------------------------------------------------

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

}

//-----------------------------------------------------------------------------------------------------------------------

Error Message: "No suitable method found to override."



Using the following:


//#region Using declarations
using System;
using System.ComponentModel;
using NinjaTrader;
using NinjaTrader.Cbi;
using NinjaTrader.Core.FloatingPoint;
using NinjaTrader.Data;
using NinjaTrader.NinjaScript;


using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Forms;
using System.Xml.Serialization;
using NinjaTrader.Gui;
using NinjaTrader.Gui.Chart;
using NinjaTrader.Gui.SuperDom;
using NinjaTrader.NinjaScript.DrawingTools;
using SharpDX;
using SharpDX.Direct2D1;
using SharpDX.DirectWrite;
//#endregion

[GaryAlbers]

Please clarify

Sorry Patrick, your wording is unclear.

The method: protected override void OnMarketData(MarketDataEventArgs e)
is not recognized in a BarType so what did you mean 'You can access the OnMarketData() in the Bar Types'?

In a different post, I made a request for documentation on how to understand and code BarType. If that were available now, it would sure clear up lots of questions and potentially lead to much cooler stuff built the 'right' way for Ninja.


Gary

[NinjaTrader_PatrickH]

Hello Gary & RJay,

Thank you for your responses.

OnRender would be accessible through ChartStyles rather than BarTypes like I originally stated.

For the Market Data, you are correct and we would need communicate between the BarTypes and Indicator - so we could draw as BarTypes does not user OnRender.
Thank you for your patience, and I will respond with an example and more information.

[NinjaTrader_PatrickH]

Hello Gary,

Thank you for your patience.

This would need to be done through the indicator as you would have done in NinjaTrader 7.