Removing a Draw Object selectively?

[davydhnz]

I have an indicator that draws text on every current bar

Draw.Text(this, "MyRating" + CurrentBar, false, MyString.ToString(myDoubleFormat), 0, High[0], +80, Brushes.DeepPink, MyFont, TextAlignment.Center, MyBlue_Brush, Brushes.Black, 100, DashStyleHelper.Dash, 2, false, "");

But when Ninja draws them, it gives them a different code like MyRating4034, etc.

How can I write

RemoveDrawObject("MyRating*********");

to remove all instances beyond a certain bar in the chart.

if (CurrentBar > Count - 20)
RemoveDrawObject("MyRating**********");​

doesn't work.

[NinjaTrader_BrandonH]

Hello davydhnz,

Thanks for your post.

Since the Tag name parameter is MyRating" + CurrentBar, each drawing object drawn on the chart will have a unique tag name.

You would need to loop through the DrawObjects collection to find specific draw objects, get their tag name, and use that tag name when calling RemoveDrawObject().

See the sample code on the DrawObjects help guide page linked below for how to loop through the DrawObjects collection to find specific draw objects.

DrawObjects: https://ninjatrader.com/support/help...rawobjects.htm
RemoveDrawObject: https://ninjatrader.com/support/help...drawobject.htm

SampleRemoveDrawObjects: https://ninjatrader.com/support/help...s_from_the.htm

Please let me know if I may assist further.

[davydhnz]

Hi Brandon,

I appreciate your reply, but after going through the Sample Code.
It only gives a static tag to remove.

Is there any code for entering a dynamic tag.

I mean the DrawObjects collection can find specific draw objects and get their tag name,
but what do I put in e.g. RemoveDrawObject("DrawObjectsCollectionList");
?

Thanks for trying

[NinjaTrader_BrandonH]

Hello davydnhz,

Thanks for your note.

Once you loop through the DrawObjects collection to get the Tag name of a drawing object on the chart, you would use that specific draw object Tag when calling RemoveDrawObject() to remove that specific draw object.

Dynamically removing draw objects using RemoveDrawObject() would require custom logic to store the drawing object's tag names to a list. This would go beyond the support we would be able to provide.

Please let me know if I may assist further.