Syntax Translation

[tonynt]

Hello Chelsea,

when a condition is true then we want to draw a ray. This works of course. Name of Ray is eg "RayX" + CurrentBar.
We can not give names Ray1, Ray2... because they are also plotted historically and we dont know if 5 rays, 15 rays, 50 rays
so when condition is true then plot the ray and add the value to a list.
When price comes back to the ray (maybe this day, in 3 days, in 5 days or whenever) then remove the ray (and remove value in list)
Thats it.

Thank you!
Tony

[NinjaTrader_ChelseaB]

Hello Tony,

Triggering the action when the price touches the ray and working with multiple rays is going to take some fancy logic.

You would need to project the price on future bars for each ray based on the slope of the anchors. In that logic, if the drawing objects are in a list you would be checking the slope of each item in that list. This means in that logic that is checking to see if each ray was touched you would have the index of that ray. If the ray is touched call RemoveDrawObject with that objects tag.

Attached is the simple example from earlier modified to add the object to a list and remove it using the list elements index for the Ray to call the .Tag on this and remove the object.

[tonynt]

Hello Chelsea,

thank you for your reply and the example. I dont understand from this example how to check in the custom logic the price of the ray.

if(High[0]>????) Remove the Ray.

Thank you!
Tony

[NinjaTrader_ChelseaB]

Hello Tony,

This you will have to come up with yourself.

Below is a link to post I think is similar.

https://ninjatrader.com/support/forum/forum/ninjatrader-8/add-on-development/107312-price-crossing-a-line?p=828663#post828663