Reading Days To Load from within strategy?

[Jellybean]

Hi

Is it possible to read what "Days to load" is set to from within a strategy, perhaps with Initialize() or OnStartUp()? This would be useful to alert the user if it was set to a value too small.

Regards
Tony

[NinjaTrader_Matthew]

Hello,

While not supported, you can use Bars.BarsData to find this property:

		protected override void OnStartUp()
		{			
			Print(Bars.BarsData.DaysBack);
		}

[koganam]

Hi

Is it possible to read what "Days to load" is set to from within a strategy, perhaps with Initialize() or OnStartUp()? This would be useful to alert the user if it was set to a value too small.

Regards
Tony

Your question is clear as stated, but is that really what you are seeking? IOW, do you want to know what "Days to load" is set to, or are you really wanting to know how many days have actually been loaded on the chart?

[Jellybean]

Good question, Koganam.

I really want to be sure that enough data is loaded to calculate a 200-day SMA in a strategy that operates on 1 min bars.

The primary bars object is 1 min (TF 12-12) and I add the series for daily bars.

I tried testing CurrentBars[1] when Historical is false, but I found that Historical is sometimes false even when historical bars of BarsArray[1] are being processed. I wanted to detect the situation where the user has loaded not enough days, but the test of CurrentBars[1] would always occur too early and indicate not enough data, even if "Days to load" was correct. There has been some discussion on this forum about it (related to the settings of "Days to load" and "Min. bars required"), but I couldn't figure out how it all worked.

By checking that "Days to load" is set to a high enough value, at least I can prompt the user if they have set it incorrectly.

That is fine for my purpose, but is there a better way?

Cheers
Tony

[koganam]

Good question, Koganam.

I really want to be sure that enough data is loaded to calculate a 200-day SMA in a strategy that operates on 1 min bars.

The primary bars object is 1 min (TF 12-12) and I add the series for daily bars.

I tried testing CurrentBars[1] when Historical is false, but I found that Historical is sometimes false even when historical bars of BarsArray[1] are being processed. I wanted to detect the situation where the user has loaded not enough days, but the test of CurrentBars[1] would always occur too early and indicate not enough data, even if "Days to load" was correct. There has been some discussion on this forum about it (related to the settings of "Days to load" and "Min. bars required"), but I couldn't figure out how it all worked.

By checking that "Days to load" is set to a high enough value, at least I can prompt the user if they have set it incorrectly.

That is fine for my purpose, but is there a better way?

Cheers
Tony

"Days to load" is merely a directive/request to load data. It may or may not match what is actually loaded. If your output depends on days loaded (not "to load"). then you should be looking at the days that are actually loaded.