Draw.HorizontalLine fails on 5, 6, 7 DaysBack

[tradesmart]

Attached is a simple indicator to demonstrate a problem with Draw.HorizontalLine that causes it to fail only with particular DaysBack settings.

To reproduce:

1. Open a NinjaScript Output window.
2. Connect to a data feed
3. Create a 30 minute chart of ES 12-16 starting with DaysBack = 1.
4. Add the gws\TroubleDrawHLine indicator, which should draw a horizontal red line at 2126.00.
5. Open the Data Series and change DaysBack to 2 and hit Apply.
6. Repeat for DaysBack 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 ...

The error occurs with DaysBack set to 5, 6, 7 and 12, 13, 14. Probably others as well, but I didn't check further.

[NinjaTrader_Jesse]

Hello,

I believe this would be because you are trying to draw from OnStateChange. This is noted that it will not work here as note #3: http://ninjatrader.com/support/helpG...hlightsub=Draw

You would instead need to use OnBarUpdate and surround the code with a check for the state:

if(State == State.Historical)
{
	Draw.HorizontalLine(...);
}

I look forward to being of further assistance.

[tradesmart]

Interesting that it works most of the time when called from OnStateChange, just seemingly not when DaysBack crosses a weekend.