question about Series data

[turbofib]

hi, i give you a questions about Series Data of ninjatrader8..

SeriesData.Count is egual to Number of bar in a chart? then is egual to CurrentBar, is correct?

i see code of nt8 @Swing.cs...look this piece of code:

public int SwingLowBar(int barsAgo, int instance, int lookBackPeriod)
{
if (instance < 1)
throw new Exception(string.Format(NinjaTrader.Custom.Resourc e.SwingSwingLowBarInstanceGreaterEqual, GetType().Name, instance));
if (barsAgo < 0)
throw new Exception(string.Format(NinjaTrader.Custom.Resourc e.SwingSwingLowBarBarsAgoGreaterEqual, GetType().Name, barsAgo));
if (barsAgo >= Count)
throw new Exception(string.Format(NinjaTrader.Custom.Resourc e.SwingSwingLowBarBarsAgoOutOfRange, GetType().Name, (Count - 1), barsAgo));

Update();

for (int idx=CurrentBar - barsAgo - Strength; idx >= CurrentBar - barsAgo - Strength - lookBackPeriod; idx--)
{
if (idx < 0)
return -1;

if (idx >= swingLowSwings.Count)
continue;

if (swingLowSwings.GetValueAt(idx).Equals(0.0))
continue;

if (instance == 1) // 1-based, < to be save
return CurrentBar - idx;

instance--;
}

return -1;
}

i see that:
if (idx >= swingLowSwings.Count)
continue;

how it's possible that idx >=swingLowSwings.Count ?
(swingLowSwings is series Data...then is egual to CurrentBar..


Are correct? ..and in

for (int idx=CurrentBar - barsAgo - Strength; idx >= CurrentBar - barsAgo - Strength - lookBackPeriod; idx--)

idx can to be only lower of CurrentBar


Then why there is in a code :
if (idx >= swingLowSwings.Count)
continue;

i don't understand this :\

[NinjaTrader_JessicaP]

Hello turbofib, and thank you for your question.

While debugging user code is beyond the scope of the support we may provide, I did notice that swingLowSwings.Count is not initialized inside this method, and that its value is not checked in the beginning of this method where other values are checked. The most likely reason for this code, then, is to ensure that this method does nothing in the case where swingLowSwings is uninitialized. Please let us know if there are any other ways we can help.