How to add Opacity (%) to indicators

[torento]

Hi,
I have an indicator I'm attempting to add the "Plots" Opacity (%) option
I saw somewhere on here to add Plots[0].Opacity = opacity; to the script but could not figure out where to add it in the script
I'm thinking it's something simple but I'm unsure how to proceed.

Your assistance is greatly appreciated

[NinjaTrader_ChrisL]

Hi torento, thanks for posting.

You can set the opacity after calling AddPlot within the OnStateChanged method in State.SetDefaults.

Kind regards.

[torento]

Hi Chris,
Thanks for your reply
No matter how I add it in I receive the error "The name opacity does not exist in the current context"
I am new to editing NinjaScript, but every time I add "Opacity" I receive the message
Could you please kindly let me know how the line would read so I could add it in without errors,

Best Regards.

[NinjaTrader_ChrisL]

Hi torento, I took a look at the script you posted and it need to set up custom Brushes with an Alpha property because these are the brushes being used in OnBarUpdate. Here is the OnStateChanged method of that script:

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"Enter the description for your new custom Indicator here.";
Name = "EMASlopeColor2";
Calculate = Calculate.OnPriceChange;
IsOverlay = true;
DisplayInDataBox = true;
DrawOnPricePanel = true;
DrawHorizontalGridLines = true;
DrawVerticalGridLines = true;
PaintPriceMarkers = true;
ScaleJustification = NinjaTrader.Gui.Chart.ScaleJustification.Right;
//Disable this property if your indicator requires custom values that cumulate with each new market data event.
//See Help Guide for additional information.
IsSuspendedWhileInactive = true;
Period = 21;
[B]UpTrend = new SolidColorBrush(Color.FromArgb(250, 0, 0, 250));
DownTrend = new SolidColorBrush(Color.FromArgb(250, 250, 0, 0));[/B]
AddPlot(Brushes.Red, "EMAPLOT");
}
else if (State == State.Configure)
{
}
}

Kind regards,
-ChrisL

[torento]

Hi Chris,
I very much appreciate your time & assistance
OK, I figured it out by looking at the NT8 Support Guide "Using Color Pickers"

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

So I change the values of the first 2 letters after the # under "Parameters" color to change the opacity now
I guess #FA must be Full Opacity where in my screenshot I've changed it to #80 for 50%

Is there a list of all the color codes for use in NT8

Again Thank you for your assistance.

[NinjaTrader_ChrisL]

Hi torento, this is coming directly from C#, see the documentation on the FromARGB method:
https://docs.microsoft.com/en-us/dot...b?view=net-6.0 (publicly available)

Kind regards,
-ChrisL