Question about accessing the PlotBrushes series of an indicator from a strategy

[trendisyourfriend]

I am trying to read the plot color of the last bar from a strategy but the color returned is always empty.

Can you help ?

Here is what i am doing:

I have this class wide variable defined which holds a collection of indicators on the chart:
private List<NinjaTrader.Gui.NinjaScript.IndicatorRenderBa se> indicatorCollection;


In a method i have this code
============================

// define the variable which will hold a ref. to an underlying indicator on the chart
NinjaTrader.Gui.NinjaScript.IndicatorRenderBase _indicator;

// get an indicator from the collection
_indicator = indicatorCollection[i];

// loop through all the plots created by this indicator
int _plotsCount = _indicator.Values.Length;
for (int _plotIndex = 0; _plotIndex < _plotsCount ; _plotIndex++)
{
int _lastBarPainted = ChartBars.ToIndex - (_indicator.Calculate == Calculate.OnBarClose ? 1:0);
Plot _plot = _indicator.Plots[_plotIndex];
BrushSeries _plotBrushes = _indicator.PlotBrushes[_plotIndex];
Brush _plotColor = _plotBrushes[_lastBarPainted];
}

Print(_plot.Name + " " + _plotColor); // <- i always get an empty content for the _plotColor variable

There is no script error and the indicator name is displayed in the output window but the _plotColor is empty and i can't understand what's wrong in my code.

[NinjaTrader_ChrisL]

Hi, thanks for posting. The ChartControl object has a collection of indicators that you can use to get the PlotColor:

https://ninjatrader.com/support/helpGuides/nt8/NT%20HelpGuide%20English.html?chartcontrol_indicators.htm

[trendisyourfriend]

Hi, thanks for posting. The ChartControl object has a collection of indicators that you can use to get the PlotColor:
https://ninjatrader.com/support/help...indicators.htm

My script is already using this ChartControl object to get the collection of indicators on a chart. However, if i try these commands:
BrushSeries _plotBrushes = _indicator.PlotBrushes[_plotIndex];
Brush _plotColor = _plotBrushes[_lastBarPainted];

_plotColor is empty. Do you have any idea why?

[trendisyourfriend]

I finally was able by forgetting about the PlotBrushes[] BrushSeries.

I used this instead:
Plot _plot = _indicator.Plots[_plotIndex];
Brush _plotColor = _plot.Brush;

Don't know why the other approach did not work though.

[NinjaTrader_ChrisL]

Hi, Im also noticing the PlotBrushes[0] is an empty array in this context. I will check to see if this is expected or not.

[NinjaTrader_ChrisL]

Hi, It looks like this output is expected. The same thing will happen if you host an indicator in a parent script, the parent script will not have access to the PlotBrushes[][] array of the hosted indicator. I will submit a feature request to ask our development team to make PlotBrushes available to other scripts that access an indicator's PlotBrushes array.