Developing indicators when market is closed

[barabba]

I need to work on indicator developing during market closing hours, for example in the weekend.
The problem is that OnBarUpdate() is not called when there is no new market data coming in, so I can't test it.

Is there a way to ensure that OnBarUpdate() is called at least once every second?

Should I start an asynchroneus endless thread once, from inside the indicator code?

[NinjaTrader_ChelseaB]

Hello barabba,

You can connect to the Simulated Data Feed and use the Default 24/7 Trading hours template.

Or you could download some market replay data to playback in the Playback connection.

https://ninjatrader.com/support/helpGuides/nt8/playback_connection.htm