Printing DrawingTools Anchor

[rs123456]

In NT8, I am having trouble with the following code:

Print(Message); //Hello World!
				
				foreach (DrawingTool draw in DrawObjects)
				{
					if (draw.GetType().Name == "Dot")
						{
						Print("Dot");
						Print(draw.GetType());					
						Print("Dot2");
						DrawingTools.Dot myDot = draw as DrawingTools.Dot;
						[B]Print(myDot.Anchor.Price); [/B]
				}

Hello World!
Hello World!
Dot
NinjaTrader.NinjaScript.DrawingTools.Dot
Dot2
Strategy 'Test2': Error on calling 'OnStateChange' method: Object reference not set to an instance of an object.

After Dot2 I can't get what I really need, to print (myDot.Anchor.Price)

[NinjaTrader_Jesse]

Hello,

Thank you for the post.

I do see this syntax working in OnBarUpdate, can you tell me which state in the script you are currently using this? Based on the error you will likely need to move the logic to a later state, for example if this was in Configure you may need to move it to Historical or DataLoaded potentially.


I look forward to being of further assistance.

[rs123456]

Tried again in OnBarUpdate

As usual, a speedy reply from NinjaTrader!

Tried again in OnBarUpdate, still get the error unfortunately:

Hello World!
Dot
NinjaTrader.NinjaScript.DrawingTools.Dot
Dot2
Strategy 'Test2': Error on calling 'OnBarUpdate' method on bar 0: Object reference not set to an instance of an object.

for example if this was in Configure you may need to move it to Historical or DataLoaded potentially.

The code was previously in Configure, how can I create a section for Historical or DataLoaded please?

[NinjaTrader_Jesse]

Hello,

Had you completely removed the indicator from the chart and re added it? If not you may be seeing the previous instance still. Like NT7's Initialize, changes to OnStateChange may require removing/adding the script.

Does this resolve the error? If not can you provide the sample you are working with as an export? Also could you tell me is this a dot you are drawing manually on the chart or is this generated from code?

To create additional states you can either add an if statement to OnStateChange():

protected override void OnStateChange()
{
	if (State == State.SetDefaults)
	{
	} 
	else if (State == State.Historical)
	{
		
	}
}

Or in OnBarUpdate, you can check for each bar what the State object equals:

if(State == State.Historical)
{

}

I look forward to being of further assistance.

[cutzpr]

How do I get the chart anchor for a dot. I tried the following below but the intellisense doesnt recognize the ".Anchor" only ".Anchors" which prints "NinjaTrader.NinjaScript.DrawingTools.ChartAnc hor[]" in the output window.

I would like to get the bar it is drawn on.

foreach(DrawingTool drawn in DrawObjects)
{
if(drawn.Tag.Contains("Dot"))
{
drawn.????????
}
}

EDIT

I figured it out, I'll leave this here just incase someone else needs it

        public void DeleteDots()
        {
            List<string> dotsToDelete = new List<string>();
            
             foreach(DrawingTool drawn in DrawObjects)
            {
                if(drawn.Tag.Contains("Dot"))
                {
                    foreach(ChartAnchor anchor in drawn.Anchors)
                        if(anchor.Time < DateTime.Now.AddHours(-12))  dotsToDelete.Add(drawn.Tag);
                }
            }
            
            
            foreach(string dot in dotsToDelete)
            {

                base.RemoveDrawObject(dot);    
            }
        }