"High[-1] >= High[0]"... does this work in Ninjascript?

[fredb987]

I'm trying to port some code from Thinkscript to Ninjascript and have a question about this line of code:

High[-1] >= High[0]

Can I use High[-1], Low[-1], etc in Ninjascript? I have a NT strategy that compiles OK with that, I'm just not sure it's going to handle things like Thinkscript does.

[eDanny]

Try High[1]. Unlike eSignal or TOS, NinjaScript doesn't need the negative sign.

Dan

[fredb987]

In TOS High[-1] looks at the next bar. High[1] in TOS gives me the previous bar high just like Ninja. Below is a snippet from the Thinkscript user manual:



Editing Stategies - Referencing Historical Bars

In the example above you see a construct that looks like this:

price[length]

Given our default values for price and length, this would actually resolve to 'close[12]'. What you see here is a reference to a bar other than current bar using [offset] syntax. In this case, 'close[12]' would give you the close price on the bar 12 bars in the past. It's important to remember that positive values are bars BACK and negative numbers are bars FORWARD:

def diff = close - close[-1];

In this example, diff equals the difference in the current and the next value. ]

[NinjaTrader_Bertrand]

Fred, unfortunately you can't reference future values in NinjaScript, as those are simply not available going forward with your script - on the very rightmost bar in realtime there would no value one bar ahead, you might experiment with substituting a regression value for it.