how to find user drawn object (hor. line)

[td_910]

Hi,

I'd like to find all user drawn horizontal lines and use their anchors for some calculations.
How can I do that?

Best regards
Thomas

[NinjaTrader_Kate]

Hello td_910,

Thank you for your note.

You would need to loop through the drawing objects collection, find horizontal lines and check they are user drawn, then you can get the line values from the anchors:

foreach (HorizontalLine line in DrawObjects.ToList())
{
// Use ToString().Equals() to check the object's Type
if (line.ToString().Equals("NinjaTrader.NinjaScript.DrawingTools.HorizontalLine") && line.IsUserDrawn == true)
{
Print(String.Format("Horizontal Line {0} detected!", line.Tag));
Print("Line Object: " + line.Tag + " Manually Drawn: " + line.IsUserDrawn);
Print("Start Bar: " + line.StartAnchor.SlotIndex + " End Bar: " + line.EndAnchor.SlotIndex);
Print("Price: " + line.StartAnchor.Price + " Time: " + line.EndAnchor.Time);
}
}

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

[td_910]

Hello Kate,

Thanks for your help. If I use that code snippet I get the following error:

"Error on calling 'OnBarUpdate' method on bar 156: Unable to cast object of type 'NinjaTrader.NinjaScript.DrawingTools.Diamond' to type 'NinjaTrader.NinjaScript.DrawingTools.HorizontalLi ne'."

There are a couple of other chart objects on that chart as well.

[NinjaTrader_Kate]

Hello td_910,

Thank you for your reply.

Ah yes, that code is specifically expecting the only drawing tools on the chart to be horizontal lines. Try this:

foreach (DrawingTool draw in DrawObjects.ToList())
{
if (draw.ToString().Equals("NinjaTrader.NinjaScript.D rawingTools.HorizontalLine") && draw.IsUserDrawn == true)
{
if (draw is DrawingTools.HorizontalLine)
{
DrawingTools.HorizontalLine line = draw as DrawingTools.HorizontalLine;
Print(String.Format("Horizontal Line {0} detected!", line.Tag));
Print("Line Object: " + line.Tag + " Manually Drawn: " + line.IsUserDrawn);
Print("Start Bar: " + line.StartAnchor.SlotIndex + " End Bar: " + line.EndAnchor.SlotIndex);
Print("Price: " + line.StartAnchor.Price + " Time: " + line.EndAnchor.Time);
}
}
}

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

[td_910]

Hello Kate,
That one gives a compile error:

NinjaTrader.NinjaScript.DrawingTools.DrawingTool' does not contain a definition for 'StartAnchor' and no extension method 'StartAnchor' accepting a first argument of type 'NinjaTrader.NinjaScript.DrawingTools.DrawingTool' could be found (are you missing a using directive or an assembly reference?)

Best regards
Thomas

[NinjaTrader_Kate]

Hello td_910,

Thank you for your reply.

Looks like I copied and pasted a "inbetween" version of the code - that's my fault! I've updated the code in my prior post.

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

[td_910]

Many Thanks!