RemoveDrawObject

[sandman]

My indicator draws a horizontal line ("DrawLine") when two conditions are fulfilled. The second part is that when either of these two conditions reverses within the same bar it is supposed to "RemoveDrawObject" i.e. remove the line. It does not do that. Only when I push F5 to refresh the chart does the line disappear.


protected override void OnBarUpdate()
{
if (CurrentBars[0] < BarsRequired)
return;

if(BarsInProgress != 0) return;

if (Rising (LinReg(BarsArray[0],4))
&& Rising (LinReg(BarsArray[0],9)))

{
DrawLine("SLup", false, 0, Low[0], 1, Low[0], upColor, DashStyle.Solid, 2);
}

if
(
(Falling(LinReg(BarsArray[0],4)))
||
(Falling(LinReg(BarsArray[0],9)))
)

{
RemoveDrawObject("SLup");
}

Do you have any advice?

sandman

[NinjaTrader_ZacharyG]

Hello sandman,

Thank you for writing in.

RemoveDrawObject() will immediately remove the draw object when called.

I do see that you have this within a condition. Have you added print statements to ensure that the condition is true?

Additionally, as you want to check for these conditions intrabar, is your CalculateOnBarClose property set to false?

As a test, are you able to see the diamond removed in the sample code below once a new bar closes?

protected override void Initialize()
{
     CalculateOnBarClose = false;
}

private bool removed = false;

protected override void OnBarUpdate()
{
     if (Historical)
          return;

     if (!removed)
          DrawDiamond("diamond", true, 0, Close[0], Color.Blue);

     if (FirstTickOfBar)
     {
          RemoveDrawObject("diamond");
          removed = true;
     }
}

[sandman]

Resolved. Thank you Zachary.