Transform series data

[turbofib]

hi,
i 've this code in nt7 :
(in chart i load 100 bar)

      protected override void OnBarUpdate()
        {

           if (CurrentBar==90) 
			Print(MIN(Low,1)[-1]);
        }

https://gyazo.com/d79c45c688b8dbc7844f4d9d4ad87243

(there isn't error....if i'm in real time..i get 0)


if i run this...i don't get error because in historic i can analyse series [-1]...
if i'm in real time....i get MIN(Low,1)[-1] =0 ..


if i've the same code in nt8

	protected override void OnBarUpdate()
		{
           if (CurrentBar==90) 
			Print(Min(Low,1)[-1]);
		}

i get error in nt8

https://gyazo.com/4155bce3ff87b4c32ad1adaf3e1ab3e6

i hope do you have understand what i mean with this post..

i want to use dataseries in nt8 as in nt7

i want use [-1] in nt8

how can i change dataseries in nt8 to do it? ..(override? ..or other)

[NinjaTrader_AlanP]

Hello Turbofib,

Thank you for your note.

In NinjaTrader 8, you should be able to reference negative index values in, State.Historical.

So for example,

if (State == State.Historical)
{
if (CurrentBar==90)
{
Print(MIN(Low,1)[-1]);
}
}

See State.Historical section of our Helpguide:

http://ninjatrader.com/support/helpGuides/nt8/en-us/?onstatechange.htm

Please let us know if you need further assistance.

[turbofib]

Can i use it (State == State.Historical) in OnBarUpdate ?

[turbofib]

Excuse me...i try it :

protected override void OnBarUpdate()
{

double tmp = 0;

if (State == State.Historical)
tmp = Min(Low, 1)[-1];

if (CurrentBar==90)
Print(tmp);
}

but it give me error

https://gyazo.com/199a7d2c1dcb5efffe7aa075fe580335

....

i try it..but it give me same error

if (State == State.Historical)
{
if (CurrentBar==90)
{
Print(MIN(Low,1)[-1]);
}
}

[NinjaTrader_AlanP]

Hello Turbofib,

While any bar data series will have the full collection of historical data, this is not the case for indicators that must plot in OnBarUpdate, what this means is that you can call Close[-1], but you could not call SMA(14)[-1]. It would not be advised to peak into the future as this will not work in real time, can I clarify what you are trying to achieve?

I look forward to your reply.

[turbofib]

i try it :


if (CurrentBar == 90)
// Print(tmp);
Print(Close[-1]);

but it give me the same error

[NinjaTrader_AlanP]

Hello Turbofib,

I just learned that the behavior in NinjaTrader 8 has changed from NinjaTrader 7 which would allow you to use a negative index value in a bar series.

Your initial inquiry was correct and this is no longer possible in NinjaTrader 8.

Please let us know if you need further assistance.