Simple Index

[kabott]

Hi, i want to create a Currency "Index", say, an EUR index, i dont know how effective will it be, just want to ask if just adding the pairs is the right approach for doing so, say:

Add("$EURUSD", PeriodType.Day, 1);
Add("$EURGBP", PeriodType.Day, 1);
Add("$EURAUD", PeriodType.Day, 1);
Add("$EURJPY", PeriodType.Day, 1);

=================

Index.Set( (Closes[1][0] +Closes[2][0] + Closes[3][0] + Closes[4][0] ) / 4 );

is this the right way? thank you!

[NinjaTrader_PaulH]

Hello kabott,

Thanks for your post.

Yes, adding the instruments in the initialize() would be the correct way to add the data.

The plotting of Index.Set however would be related to the chart's data series which you have not included in the calculation (and this may be okay, just wanted to point that out) so I would suggest adding a BarsInProgress check before the set statement to only plot when called by the chart bars. Also, you would want to perform a currentBars[] check before trying to access the data to ensure the data is there or you will generate a bar index error. I am assuming the chart bars are daily or lower.

if (CurrentBars[0] < 1 || CurrentBars[1] < 1 || CurrentBars[2] < 1 || CurrentBars[3] < 1 || CurrentBars[4] < 1) return; // do not process until at least 1 bar loaded

if (BarsInProgress != 0) return; // only plot when chart bars call OnBarUpDate()

Index.Set( (Closes[1][0] +Closes[2][0] + Closes[3][0] + Closes[4][0] ) / 4 );

References:

https://ninjatrader.com/support/helpGuides/nt7/?currentbars.htm

https://ninjatrader.com/support/helpGuides/nt7/?barsinprogress.htm

[kabott]

Hi, Paul, this is what ive got and nothing shows Up

Add(new Plot(Color.FromKnownColor(KnownColor.Orange), PlotStyle.Line, "EUR_INDEX"));


Add("$EURUSD", PeriodType.Day, 1);
Add("$EURGBP", PeriodType.Day, 1);
Add("$EURCAD", PeriodType.Day, 1);
Add("$EURAUD", PeriodType.Day, 1);




Overlay = true;
CalculateOnBarClose= true;
}


protected override void OnBarUpdate()
{
if (CurrentBars[0] < 1 || CurrentBars[1] < 1 || CurrentBars[2] < 1 || CurrentBars[3] < 1 || CurrentBars[4] < 1) return; // do not process until at least 1 bar loaded

if (BarsInProgress != 0) return; // only plot when chart bars call OnBarUpDate()

EUR_INDEX.Set( (Closes[1][0] +Closes[2][0] + Closes[3][0] + Closes[4][0] ) / 4 );

[NinjaTrader_PaulH]

Hello kabott,

Thanks for your reply.

As your code shows, you have Overlay set to true which means the plot would be placed in the price panel. If the plot is there, it could be at a significantly different level then whatever instrument you are using on the chart's bars, so I would advise setting overlay false to place the plot in an indicator panel.

I do not know what your chart bars are so if they are less than daily bars, you may need to increase the "days to load" as the added daily bars can only load as many days as you have specified in the charts data series. I would suggest at least 30 days of data.

If these do not resolve the issue, please post your entire code file.