plotting and understanding Values[0], Values[1]

[ballboy11]

I am inquiring what values[0], values[1] is. I can not see any initialization for Values

All this is doing is painting red and green bars on volume. I am planning to do the same but I need 5 colors for different scenarios.
How does the indicator know what is red and what is lime? I understand the add new plot but where is the array telling which color to use.

dataseries IndicatorBase.Values.

Lastly why is there a Values[1].Reset() ?




protected override void Initialize()
{
Add(new Plot(new Pen(Color.Lime, 2), PlotStyle.Bar, "UpVolume"));
Add(new Plot(new Pen(Color.Red, 2), PlotStyle.Bar, "DownVolume"));
Add(new Line(Color.DarkGray, 0, "Zero line"));
}

/// <summary>
/// Called on each bar update event (incoming tick)
/// </summary>
protected override void OnBarUpdate()
{
if (Close[0] >= Open[0])
{
Values[0].Set(Volume[0]);
Values[1].Reset();

}
else
{
Values[1].Set(Volume[0]);
Values[0].Reset();
}
}
}
}

[NinjaTrader_ChelseaB]

Hello ballboy11,

If you are referring to Values (with a capital V) this is a special collection that is maintained by the NinjaTrader core.

Each time you call AddPlot() this will automatically add an element to Values.

Values is a collection of collections.

Values[1] (Values[plotSeriesIndex]) would refer to the second plot.
Values[1][1] (Values[plotSeriesIndex][barAgoValue]) would refer to the second to most recent bar of the second plot.

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

Your plot style is bar and is not set to line. This means it will make a histogram. You have two plots on top of each other. Whichever is on top will be the one that shows.

The .Reset() will remove a value from a bar if it was previously set and set this back to no value. This is used if you are checking bars have values with .ContainsValue().

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