MaxBars in incoming Chart

[ohtrader]

I understand that the CurrentBar cycles through the bars in the data series, but is there a variable that lets you know the total number of bars in the data series?

[NinjaTrader_Bertrand]

ohtrader, CurrentBar would hold this number bars available - http://www.ninjatrader-support.com/H...urrentBar.html

Just do something like this in indicator -

 
if (Historical) return;

Plot0.Set(CurrentBar);

This would plot number of bars on the chart when you load this live.

[ohtrader]

Suggestion for identifying the most recent historical bar

I understand the use of the CurentBar / Historical to ensure that you're working on live data. The use of Historical for a 1-3 minute chart is OK for what I want to do, because in a relatively short timeframe the live data comes in and my analysis code will be run. I am not intending to plot anything based on this data, I am printing out the range of values for between the incoming interval for between 1 hr and several months ago (depending on the size of the interval).

My challenge comes when I need to get information on expected ranges of upcoming bars for a longer timeframe, e.g. 30 min - 120 min. In these cases, if I rely on Historical, I may have to wait ~30 minutes up to over 1 hour to get the data. So, in the case of the longer timeframes, I would like to be able to run my code on the last completed bar. Any suggestions on how to do this??

Thanks,

Jackie

[NinjaTrader_JoshP]

Jackie,

Unfortunately I am not following you. The code processes from the very first bar moving forward. After each bar is processed it is considered "historical".

[ohtrader]

How to identify last Historical Bar

OK - so on a one minute chart that has 15 bars back that is executing at 4:30 PM, the first bar is at 4:15 PM. Then on the next bar Open[0] refers to the 4:16 PM bar, and the prior bar is accessible via Open[1], etc. . I want to begin processing on the last completed bar relative to the current time and am having difficulty doing that. In other programming paradigms I have used a MAXBARS strategy to know when I am at the end of the intervals, and in this case I'd take a version of 'is this bar w/in 1 interval of the current-working interval' - but have not been able to find a way to code this (as data is either Historical, or Live). If I could easily compare/subtract time I could possibly go that route as well, but haven't found enough programming input on the web to do that.

Your suggestions would be appreciated.

Jackie

[NinjaTrader_JoshP]

Bertrand's suggestion would be the way to do just that.

if (Historical)
    return;

Prevents processing of any bars prior to when you started the strategy. Then with CalculateOnBarClose = true, you wait for the first real-time bar to close before you start process your script once.

[ohtrader]

Josh:

For intervals of 5 min or less, Bertrand's suggestion works. If, however, I am on a 120-min chart - I don't want to wait up to 119 minutes to have the OnBarUpdate execute.

[NinjaTrader_JoshP]

ohtrader,

Then use CalculateOnBarClose = false and you will get updates every single tick in real-time.