Trigger order off user-defined line

[astrolobe]

In Ray's charting overview video, he mentioned that it is possible to trigger a order off a user defined line. Is there a NT method to do this, i.e., how do we know when price touches the line?
thanks.

[NinjaTrader_Bertrand]

astrolobe, this is possible via accessing the properties of the associated IDrawObjects (look for example in the ILine help guide article).

[astrolobe]

Bertrand, could you direct me to a ILine example in the help, as I do not see any example that shows me what the Y value is for a line, at a specific point in time.

[NinjaTrader_Bertrand]

There's none really unfortunately yet, as this is work in progress still - for the trendline end Y value, just access the ILine EndY property then...

[mrlogik]

Astro. Here's an example using the ILine object

ILine lObj;  //Make this global

OnInitialize()
{
    lObj = null;
}


//Create a line (somewhere in your code)
lObj = DrawLine("sometag", true, 10, Close[0], 0, Close[0], Color.DimGray, DashStyle.Solid, 2);

you can reference this object price value (or Y value) as such.

// Its good practice to ensure you don't reference a null object.
if(lObj != null)
{
    //EndY here is the price of the line on the chart.  
    if(somevalue > lObj.EndY)
   {
      ...
   }
}

You have a StartY and an EndY. These are two different endpoints that can be different values, unless you have a perfectly horizontal line. The help file describes these two ponits.

You can also checkout IRay, IHorizontalLine, etc.

Hope this helps.

[astrolobe]

Thanks mrlogik, that will will help me to get going.

[astrolobe]

Betrand, in Ray's video at 20:47, he says that you can draw a line manually on a chart, then access it in a NT script (indicator) using its tag value. How would you do that?
Is there a collection of Line objects that I need to loop through, searching for the tag, or is there a more direct method if I pass the tag into the indicator as a parameter?

[NinjaTrader_Bertrand]

Correct, you would need to loop through the tag ID collection, please see this thread here a snippet related - http://www.ninjatrader-support2.com/...ad.php?t=18540