Streamreader

[Jim-Boulder]

In the streamreader indicator sample in the reference section ("SampleStreamReader"), my understanding is this example is for reading in historical data stored externally for use in an indicator (or strategy)--values typically stored by date.

Why does the code then exclude any 'historical'date through the line

if (Historical)
return;

?

I want to read values for my own variables (not O,H,L,C) for all dates in my external file--should I leave this line out?

Is streamwriter the best option for doing this?

[NinjaTrader_Austin]

Jim-Boulder, that line is there so it doesn't try to read from a file every single time a bar is updates. For example, if you were backtesting this code it would run on every bar of the backtest, which could be many, many bars.

If you want to read variables from a file, it would probably be best to read that files once, right at the beginning of the script running. You can run code just once at the beginning like this:

OnBarUpdate()
{
  if (CurrentBar == 0)
  {
    // do one time calculations, or load data from an external file here
  }
}

Generally, StreamReader isn't useful to read in historical data every bar. It would be difficult to integrate this data into your strategy anyways.