drawing a line between trigger and a past bar

[gordongekko]

I have read over the documentation regarding drawing lines but I don't see any
specific info regarding what I'm trying to code.

What I want to do is have the indicator draw a horizontal line from the close of the trigger bar in a method to the close of a bar I've assigned to a double from a previous trigger. The reason I need to use a double for the 1st plot point is that I don't know what bar it occurred on the past when the current trigger bar occurs.

I'm assuming I need to use this but what do i put in the ()

HorizontalLine myLine = Draw.HorizontalLine( please fill in blanks here )

To make the example easier to understand just the var previoustrigger in the explanation.

Also how do I draw a line a set number of bars forward or backwards from the current bar. Thanks in advance for your assistance.

[NinjaTrader_AlanP]

Hello gordongekko,

Thank you for your note.

If you wanted to draw a line between two points, you would want to use Draw.Line rather than Draw.HorizontalLine.

You could use the syntax which takes a start/end bars ago, or a DateTime object.

Using the bar index syntax, the following would draw a line between the current bar and 10 bars back.

Draw.Line(“this”, “x”+CurrentBar, 10, Close[0], 0, Close[0], Brushes.Red);

Please see the following section of our helpguide,

https://ninjatrader.com/support/helpGuides/nt8/en-us/?draw_line.htm

Please let us know if you need further assistance.