Condition in combination with lines

[Bruin813]

Is it possible to add a condition to the close of a bar in combination with a coded extended line?

For example:
IF close[0] < Extended Line THEN
Do something....

Thanks.

Regards,

Gunnar

[NinjaTrader_ZacharyG]

Hello Gunnar,

Thank you for writing in.

Yes, this would be possible.

You can accomplish this by assigning an IExtendedLine object to DrawExtendedLine() and then accessing the IExtendedLine object's StartY or EndY values.

https://ninjatrader.com/support/helpGuides/nt7/?iextendedline.htm

As an example:

IExtendedLine el = DrawExtendedLine("line", 0, Close[0], 10, Close[0], Color.Blue);

if (Close[0] < el.StartY)
     // do something

Please, let us know if we may be of further assistance.

[Bruin813]

Dear Zachary,

Thanks for the quick reply and your proposal.

However, you suggestion will not work since StartY and EndY are fixed values from previous bars. When the extended line is sloping up, the value of the line at Time[0] will be bigger than the EndY value. That will be the value I'm interested in.

Are there any other possibilities or do I have to create a workaround?

Regards,

Gunnar

[NinjaTrader_ZacharyG]

Hello Gunnar,

You're right about that! I apologize.

I'm figuring out a solution for you here. Thank you for your patience.

[NinjaTrader_ZacharyG]

Hello Gunnar,

Thank you for your patience.

What I propose is finding the slope of your line and then adding that value to your initial endY value every time OnBarUpdate() is called.

Here's an example:

private bool doOnce = false;
private double slope;
private double endY;

protected override void OnBarUpdate()
{
	if (CurrentBar < 200)
		return;

	if (!doOnce)
	{
		DrawExtendedLine("line", true, 200, Close[200], 0, Close[0], Color.Blue, DashStyle.Solid, 1);
		slope = (Close[0] - Close[200]) / 200;
		endY = Close[0];
		doOnce = true;
                return;
	}
	endY += slope;
	Print(Time[0] + " " + endY);
}

You can then use the endY variable for your comparison.