Pass Selection of Bars to Indicator By Drawing on a Chart

[Jim-Boulder]

I wasn't sure how to best describe what I am looking to do, so I have attached a picture. Is it possible to pass a selection of bars to an indicator by drawing on the chart? For example, lets assume I want to add up all the volume, Highest High and Lowest Low prices for just a region of bars that I would pick by drawing the region of the chart, as shown in the picture I have attached.

The indicator would accept the bars within the rectangle drawn and do the calculations only for those bars.

I wasn't sure where to start my search for doing this...

[NinjaTrader_Jim]

Hello Jim-Boulder,

Thanks for opening the thread!

This would be possible to do, however it would involve some custom programming involving pure C#.

To provide some direction, you could use your own mouse event handlers to detect where you are clicking on the Chart's ChartPanel, and then you could use the ChartControl and ChartScale methods to convert pixel coordinates from the mouse to bar slots and prices.

As you would be clicking and dragging to create a rectangle which would need to be updated faster than OnBarUpdate() to give solid visual feedback, I would advise to use custom SharpDX rendering in OnRender() to create the rectangle.

I've included links to our publicly available information on the topics discussed, and to an example indicator conversion that creates its own mouse event handlers.

ChartrControl.GetSlotIndexByX() - https://ninjatrader.com/support/help...otindexbyx.htm

ChartScale.GetValueByY()- https://ninjatrader.com/support/help...etvaluebyy.htm

OnRender() - https://ninjatrader.com/support/help...s/onrender.htm

SharpDX Rendering - https://ninjatrader.com/support/help..._rendering.htm

Advanced Risk Reward indicator (See OnstateChange() for subscribing/unsubscribing and the Mouse region for additional example code) - https://ninjatrader.com/support/foru...atid=7&lpage=1

If there is anything else I can do to assist, please let me know.