DaysToLoad

[Danville.Sumobay]

I need the equivalent of "Bars.BarsData.DaysBack" from NT7 to NT8

I tried DaysBack from the help guide but it won't work.

https://ninjatrader.com/support/helpGuides/nt8/?chartbars_properties.htm

Thank you!

[bltdavid]

I need the equivalent of "Bars.BarsData.DaysBack" from NT7 to NT8

I tried DaysBack from the help guide but it won't work.

https://ninjatrader.com/support/helpGuides/nt8/?chartbars_properties.htm

Won't work how?

ChartBars.DaysBack doesn't work?

Can you post your code?

[Danville.Sumobay]

I got an error when added that to my script.

'NinjaTrader.Gui.Chart.ChartBars' does not contain a definition for 'DaysBack' and no extension method 'DaysBack' accepting a first argument of type 'NinjaTrader.Gui.Chart.ChartBars' could be found (are you missing a using directive or an assembly reference?)



Thanks

[NinjaTrader_Kate]

Hello Danville.Sumobay,

Thank you for your reply.

Could you please post a sample snippet of the code in question that is not compiling?

Thanks in advance; I look forward to assisting you further.

[Danville.Sumobay]

Thank you for your response,

I simply add this line for NT8

int d = ChartBars.DaysBack; //this produce an error

While I had no problem this equivalent in NT7 with the following

int d = Bars.BarsData.DaysBack;

[NinjaTrader_Kate]

Hello Danville.Sumobay,

Thank you for your reply.

We need a little more context here. Where in your code does this occur? Is this inside OnBarUpdate()? Elsewhere? If you could provide a larger code sample that would be helpful in discerning the context.

Thanks in advance; I look forward to assisting you further.

[Danville.Sumobay]

Yes, it is inside the OnBarUpdate()


protected override void OnBarUpdate()
{
if (BarsArray[0].BarsType.IsRemoveLastBarSupported)
{
if (CurrentBar == 0)
Value[0] = Input[0];
else
{
double last = Value[1] * Math.Min(CurrentBar, Period);

if (CurrentBar >= Period)
Value[0] = (last + Input[0] - Input[Period]) / Math.Min(CurrentBar, Period);
else
Value[0] = ((last + Input[0]) / (Math.Min(CurrentBar, Period) + 1));
}
}
else
{
if (IsFirstTickOfBar)
priorSum = sum;

sum = priorSum + Input[0] - (CurrentBar >= Period ? Input[Period] : 0);
Value[0] = sum / (CurrentBar < Period ? CurrentBar + 1 : Period);
}

int d = ChartBars.DaysBack;

Print("DaysToLoad: "+d);
}

I saw "DaysBack" on the documentation but I don't know how to apply.


Thanks

[NinjaTrader_Kate]

Hello Danville.Sumobay,

Thank you for your reply.

You're trying to use ChartBars.DaysBack, but the correct syntax here for that would be ChartBars.Properties.DaysBack.

One note: I would recommend using full brackets with your if/else statements, like this:

if (some condition)
{
// do something
}
else
{
// do something else
}

This will help better structure your code. You can omit brackets if it's just one line after the if statement, as in:

if (CurrentBar < Period)
return;

Otherwise, I recommend using both opening and closing brackets, otherwise things can get confusing quickly.

Please let us know if we may be of further assistance to you.

[bltdavid]

the correct syntax here for that would be ChartBars.Properties.DaysBack.

Really? That simple, huh?

Gee, hard to know that, since the documentation does not have a SINGLE example of the usage.

I had even grepped every NT8 indicator, searching for an example of DaysBack ... no joy.

When you add up all the time wasted for every person affected because of insufficient documentation, it boggles the mind.

Unfortunately, there is still no substitute for live and learn.

[Danville.Sumobay]

Thank you!