Get strategy to get the ray price of the current bar.

[RobotSyndicate]

Hello,

I have found examples to get a strategy to detect manually drawn lines/rays/etc, and to get the price of the start/end anchors of a ray, but I haven't been able to figure out how to get the price of a manually drawn ray at the current bar. Any help would be greatly appreciated!

Thank you.

[NinjaTrader_PaulH]

Hello RobotSyndicate,

Thanks for your post.

You would need to use the start and end anchor points of the ray and then calculate, on a bar by bar basis the price value of the ray using the slope of the ray. Here is a link to a forum thread that has a demonstration of this process: https://ninjatrader.com/support/foru...-the-drawn-ray

[RobotSyndicate]

Thank you for the tips. Now I am trying to get the price of the anchors for the manually drawn ray as follows:

if (DrawObjects["UpperTrendLine"] != null && DrawObjects["UpperTrendLine"] is DrawingTools.Ray)
{
upstartBarPrice = UpperTrendLine.StartAnchor.Price;
upendBarPrice = UpperTrendLine.EndAnchor.Price;
}

and when I compile is tells me that the name 'UpperTrendLine' does not exist in the current context, I assume because it is supposed to be a manually drawn line. Am I doing this incorrectly? Or how can I compile this?

ALSO, I'm trying to calculate the slope of the manually drawn ray to project a price that I adjust a MIT order along. I cant figure out how get how many bars ago the anchors are. I see that <ChartAnchor>.BarsAgo does not work for manually drawn rays. I am using tick bars, so i don't believe that <ChartAnchor>.Time would be helpful... Is there another way to do this?


Thanks again!

[NinjaTrader_PaulH]

Hello RobotSyndicate,

Thanks for your reply.

To answer both questions, here is an example you can test with of looping through the draw objects collection, then if a specific name ("RayMine"), to then create a temp draw object to pull the start/end info from.

        protected override void OnBarUpdate()
        {
            foreach (DrawingTool draw in DrawObjects.ToList())
              {                
                if (draw.Tag == "RayMine")
                {
                    DrawingTools.Ray temp = draw as DrawingTools.Ray;

                        Print("startYPrice: " + temp.StartAnchor.Price); 
                        Print("startXTime: " + temp.StartAnchor.Time);
                        Print("startXBarsAgo: " + (CurrentBar - temp.StartAnchor.SlotIndex)); // works for manual or script drawn!
                        Print("endYPrice: " + temp.EndAnchor.Price);
                        Print("endXTime: " + temp.EndAnchor.Time);
                        Print("endXbarsago: " + (CurrentBar - temp.EndAnchor.SlotIndex)); 
                }
            }
        }

[RobotSyndicate]

Thank you SO much! This is exactly what I needed. 10/10!

[Tiang]

Hi PaulH,
When I run the code in your Post #4, I get this error msg: Object reference not set to an instance of an object. Running in NT8, 8.1.3.1 64-bit.
Pls help, TQ.