Why I cannot draw anything on chart ?

[tkaluzny]

Hi,

I wanted to draw a line or circle in the indicator code it compiles but nothing is actually drawn on chart.

Example code:

protected override void Initialize()
{
Overlay = true;
this.CalculateOnBarClose = false;
}

protected override void OnBarUpdate()
{
this.DrawLine("line1",20,9740, 5, 9740, Color.Red);
}

The price is currently around this level - 9740, but when adding the indicator to chart I didn't see any line. How can I fix this ?

Thanks in advance.

Tomasz

[tkaluzny]

I'm able to see a following errors in log:
Error on calling 'OnBarUpdate' method for indicator 'CircleEntries' on bar0. DrawLine: startBarsAgo out of valid range 0 through 0, was 10. Is it possible that drawing on Tick charts isn't supported ? As it's not true that the range is 0 through 0 as there are a lot of bars already since start of trading for today (FDAX).

[NinjaTrader_Bertrand]

tkaluzny, you likely just miss a check for enough CurrentBars here, as you could for example not draw back those bars at the very beginning of the chart.

https://www.ninjatrader.com/support/helpGuides/nt7/currentbar.htm