"index was outside the bounds of the array"

[kabott]

Hey, an error appears in the Log saying "index was outside the bounds of the array"

the strategy doesn't work and i dont know how to solve it, any help will be appreciated
Thanks a lot!


KBT_Strat_Stoch_Bands_V1.zip

[bltdavid]

Just a quick look.

In your OnBarUpdate() I see this code,

if ( CurrentBars[[B][COLOR=Red]1[/COLOR][/B]] <=  ( channelPeriods +  signalPeriods)       ) return;

But I see no secondary data series added in your Initialize().

Are you sure you mean to use CurrentBars[1]?

Did you try using CurrentBars[0]?

[kabott]

Hi david, well the indicator on which the strategy is based is multitimeframe, meaning i could calculate it from a 60 minute timeframe while using the default timeframe (CurrentBars[0]) to trigger entries

[kabott]

If i use CurrentBars[0] the strategy indicator just disappears, while before it was there just no entries triggered at all and the error "index was outside the bounds of the array" on the Log tab

[NinjaTrader_ChelseaB]

Hello kabott,

I am also seeing what bltdavid has mentioned.

The BarsInProgress index of CurrentBars identifies the data series that is processing.

Your script does not add a secondary series. Thus CurrentBars[1] does not exist.

The strategy does add an indicator to the chart, but this does not create a secondary price data series in the Strategy.

Below is a link to the help guide on Add() which demonstrates how to add additional series to a script.

http://ninjatrader.com/support/helpGuides/nt7/add3.htm

If you are receiving an index error, this will cause your strategy to become disabled. This would indicate why the strategy does not place trades, as it is hitting an error and becoming disabled.

Further, have you commented out all unrelated code to identify the line of code that is generating the error?

[kabott]

This is the indicator applied directly to a 20 Range chart while calculating from a 60 Minute Timeframe



and i wanted to make a strategy so i could test it

[kabott]

Hi ChelseaB, i added the new data series and now the error says "Add method only accepts positive period values but was -1"

:/

[NinjaTrader_ChelseaB]

Hello kabott,

What code did you use to add the secondary series?

Are you supplying the BarsArray[BarsInProgress index] to the indicator call?

For example, if I were calling the SMA with a secondary series of 10 minute:

protected override void Initialize()
{
	Add(PeriodType.Minute, 10);
}

protected override void OnBarUpdate()
{
	Print(string.Format("{0} | SMA(BarsArray[1], 14)[0]: {1}", Time[0], SMA(BarsArray[1], 14)[0]));
}

[kabott]

Hi ChelseaB, same script i ised inside the indicator being called by the strategy (which is multimeframe)

switch(bType)
{
case KBTSinB_V2.Default:
Add(Instrument.FullName, BarsPeriod.Id, BarsPeriod.Value, MarketDataType.Last);
break;

case KBTSinB_V2.Minute:
Add(PeriodType.Minute, timeframePeriods);
break;

case KBTSinB_V2.Day:
Add(PeriodType.Day, timeframePeriods);
break;

case KBTSinB_V2.Week:
Add(PeriodType.Week, timeframePeriods);
break;

case KBTSinB_V2.Range:
Add(PeriodType.Range, timeframePeriods);
break;

case KBTSinB_V2.RangeNoGap:
Add(PeriodType.Custom2, timeframePeriods);
break;

case KBTSinB_V2.Renko:
Add(PeriodType.Renko, timeframePeriods);
break;

case KBTSinB_V2.HybridRenko:
Add(PeriodType.Final0, timeframePeriods);
break;




ill paste the complete script in a sec, i know its tedious to install indicators all the time :P

[kabott]

protected override void Initialize()
{
EntryHandling = EntryHandling.UniqueEntries;
// CalculateOnBarClose = false;
ExitOnClose= false;
Enabled = true;


#region Mayor TF Selection Switcher

switch(bType)
{
case KBTSinB_V2.Default:
Add(Instrument.FullName, BarsPeriod.Id, BarsPeriod.Value, MarketDataType.Last);
break;

case KBTSinB_V2.Minute:
Add(PeriodType.Minute, timeframePeriods);
break;

case KBTSinB_V2.Day:
Add(PeriodType.Day, timeframePeriods);
break;

case KBTSinB_V2.Week:
Add(PeriodType.Week, timeframePeriods);
break;

case KBTSinB_V2.Range:
Add(PeriodType.Range, timeframePeriods);
break;

case KBTSinB_V2.RangeNoGap:
Add(PeriodType.Custom2, timeframePeriods);
break;

case KBTSinB_V2.Renko:
Add(PeriodType.Renko, timeframePeriods);
break;

case KBTSinB_V2.HybridRenko:
Add(PeriodType.Final0, timeframePeriods);
break;


}

#endregion


SInB = KBT_Stochastics_in_Bands_V3( adxMinimumVolatility, adxPeriod, ModeStyle.Stochastics, KBTSinB_V2.Default, channel_MidOffset_Percent, channel_Offset, channelPeriods, SelectChannelStartegy.None, macdFast, macdSlow, macdSmooth, maType, signalPeriods, signalType, stochPeriodD, stochPeriodK, stochSmooth, timeframePeriods);
Add( SInB);





}


protected override void OnBarUpdate()
{
EntryHandling = EntryHandling.UniqueEntries;
ManageOrders();



if ( CurrentBars[1] <= ( channelPeriods + signalPeriods) ) return;
{
if (BarsInProgress == 0 )
{



#region -- Entrys

// RISING

if ( ( SInB.SinB_ADX[0] > adxMinimumVolatility) &&
( SInB.Channel_Midline[0] > SInB.Channel_Signal[0] ) &&
( SInB.Avg_Fast[1] < SInB.Channel_Midline[1] || SInB.Avg_Fast[2] < SInB.Channel_Midline[2] ) &&
( SInB.Avg_Fast[1] < SInB.Avg_Slow[1] && SInB.Avg_Fast[0] > SInB.Avg_Slow[0] || SInB.Avg_Fast[2] < SInB.Avg_Slow[2] && SInB.Avg_Fast[1] > SInB.Avg_Slow[1] || SInB.Avg_Fast[3] < SInB.Avg_Slow[3] && SInB.Avg_Fast[2] > SInB.Avg_Slow[2] ) &&
( SInB.MicroT3Close[1] < SInB.MicroT3Open[1] && SInB.MicroT3Close[0] > SInB.MicroT3Open[0] ) && FirstTickOfBar )
{


GoLong();


}



// Falling
if ( ( SInB.SinB_ADX[0] > adxMinimumVolatility ) &&
( SInB.Channel_Midline[0] < SInB.Channel_Signal[0] ) &&
( SInB.Avg_Fast[1] > SInB.Channel_Midline[1] || SInB.Avg_Fast[2] > SInB.Channel_Midline[2] ) &&
( SInB.Avg_Fast[1] > SInB.Avg_Slow[1] && SInB.Avg_Fast[0] < SInB.Avg_Slow[0] || SInB.Avg_Fast[2] > SInB.Avg_Slow[2] && SInB.Avg_Fast[1] < SInB.Avg_Slow[1] || SInB.Avg_Fast[3] > SInB.Avg_Slow[3] && SInB.Avg_Fast[2] < SInB.Avg_Slow[2] ) &&
( SInB.MicroT3Close[1] > SInB.MicroT3Open[1] && SInB.MicroT3Close[0] < SInB.MicroT3Open[0] ) && FirstTickOfBar )
{

GoShort();

}

#endregion

[NinjaTrader_ChelseaB]

Hello kabott,

Before trying something very complicated like this, have you tried adding one additional series without a switch and using this as the input for a call to an indicator?

Please try simplifying your code to the bare minimum needed to test.

Have you tried the example I have posted in post #8?

[kabott]

You are right Chelsea, actually i was thinking about it too, im gonna write a very basic version and use that one for the strategy