Accessing an index with a value that is invalid

[light65536]

I get this error:
You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart.

I'm accessing a custom indicator with a data series in it and trying to reference a previous value using indicator[1]

I have the following code in my bar update method, as well

if((BarsInProgress == 0) && ( CurrentBar > 1))

[light65536]

I also just try to access
HIgh[0] > High[1]

And I get errors just form that... index out of range.

I'm using maxbarsback setting and also checking CurrentBar

I'm running this with a market replay... very bizarre behavior

[koganam]

I get this error:
You are accessing an index with a value that is invalid since its out of range. I.E. accessing a series [barsAgo] with a value of 5 when there are only 4 bars on the chart.

I'm accessing a custom indicator with a data series in it and trying to reference a previous value using indicator[1]

I have the following code in my bar update method, as well

if((BarsInProgress == 0) && ( CurrentBar > 1))

Unfortunately, that snippet of code does not really say much; it is just a line of code, with no context. You may have to disclose a bit more of what you are doing, even if it is in pseudo-code rather than the actual code.

You seem to be using a multi-timeframe structure, in which case you have to check all bar series for validity.

[light65536]

Thanks Kogaman. I am not using MTF. I am referencing a custom indicator. I have tried many ways to check if data.. such has HasValue, Count, etc... but when I try to access my custom indicator then it throws exception.

I will experiment some more today to see what I can come up with.

[light65536]

Can I get some help here? This is very frustrating.

I have an indicator that I'm trying to reference in my Ninja strategy but I keep getting errors on you are trying to access a value that is invalid/out of range

I am trying the following

MyIndicator.Series.ContainsValue(0) and MyIndicator.Series.ContainsValue(1)

before accessing anything... not working. It looked like it was fixed then started again.

Rather frustrated here...

[koganam]

Thanks Kogaman. I am not using MTF. I am referencing a custom indicator. I have tried many ways to check if data.. such has HasValue, Count, etc... but when I try to access my custom indicator then it throws exception.

I will experiment some more today to see what I can come up with.

Then BarsInProgress is rather pointless. What we need to see in order to be able to help are:

1. The inputs/outputs of the indicator that is being referenced.
2. The code line in which you are writing the reference to said indicator.

Other than that, it is simply a matter of escaping the correct number of bars that do not exist at the time of reference.

Most often used is, to place this as the first line of OnBarUpdate():

if (CurrentBar < BarsReq) return;

where BarsReq is usually 1, but can be any number that is appropriate for your back reference.

[light65536]

Okay.. so it sounds like this is another bug.. (argh). What is the proper way to test if my indicator has valid values then?

http://www.ninjatrader.com/support/forum/showthread.php?t=30339

[light65536]

Might this have something to do with the way I'm adding series to my indicator? I am only adding a property like this.. I also add the plots. The indicator works properly but I can't access my series from my strategy. The Indicator.ContainsValue throws an exception.

I've tried

MyIndicator(...).MySeries.ContainsValue(0) && MyIndicator(...).MySeries.ContainsValue(1)
--> throws exception... you are access an index with a value that is invalid

I need a fix for this... thanks!



[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries NewSeries
{
get { return Values[0]; }
}


[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries NewSeries1
{
get { return Values[1]; }
}

[koganam]

Might this have something to do with the way I'm adding series to my indicator? I am only adding a property like this.. I also add the plots. The indicator works properly but I can't access my series from my strategy. The Indicator.ContainsValue throws an exception.

I've tried

MyIndicator(...).MySeries.ContainsValue(0) && MyIndicator(...).MySeries.ContainsValue(1)
--> throws exception... you are access an index with a value that is invalid

I need a fix for this... thanks!



[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries NewSeries
{
get { return Values[0]; }
}


[Browsable(false)] // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()] // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries NewSeries1
{
get { return Values[1]; }
}

The answer is still the same as what I gave you before: you have to escape processing for the number of bars which will not be available at bar 0. In this case, as you are trying to reference the bar 1 bar back, you need to escape 1 bar.