opacity

July 18th, 2020, 10:13 PM

I would like to add opacity control to this simple indicator. Can someone point me in the right direction. What do I need to add?

public class StochFilter : Indicator
{
private StochasticsFast StochasticsFast1;
private StochasticsFast StochasticsFast2;
private StochasticsFast StochasticsFast3;

protected override void OnStateChange()
{
if (State == State.SetDefaults)
{
Description = @"Enter the description for your new custom Indicator here.";
Name = "StochFilter";
Calculate = Calculate.OnBarClose;
IsOverlay = false;
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;
}
else if (State == State.Configure)
{
}
else if (State == State.DataLoaded)
{
StochasticsFast1 = StochasticsFast(Close, 6, 13);
StochasticsFast2 = StochasticsFast(Close, 13, 25);
StochasticsFast3 = StochasticsFast(Close, 13, 25);
}
}

protected override void OnBarUpdate()
{
if (BarsInProgress != 0)
return;

if (CurrentBars[0] < 0)
return;

// Set 1
if ((StochasticsFast1.D[0] > StochasticsFast2.D[0])
&& (StochasticsFast3.D[0] < 80)
&& (StochasticsFast3.D[0] > 20))
{
BackBrush = Brushes.Green;
}

// Set 2
if (StochasticsFast3.D[0] > 80)
{
BackBrush = Brushes.Green;
}

// Set 3
if ((StochasticsFast1.D[0] < StochasticsFast2.D[0])
&& (StochasticsFast3.D[0] < 80)
&& (StochasticsFast3.D[0] > 20))
{
BackBrush = Brushes.Maroon;
}

// Set 4
if (StochasticsFast3.D[0] < 20)
{
BackBrush = Brushes.Maroon;
}
}
}
}

#region NinjaScript generated code. Neither change nor remove.

namespace NinjaTrader.NinjaScript.Indicators
{
public partial class Indicator : NinjaTrader.Gui.NinjaScript.IndicatorRenderBase
{
private StochFilter[] cacheStochFilter;
public StochFilter StochFilter()
{
return StochFilter(Input);
}

public StochFilter StochFilter(ISeries<double> input)
{
if (cacheStochFilter != null)
for (int idx = 0; idx < cacheStochFilter.Length; idx++)
if (cacheStochFilter[idx] != null && cacheStochFilter[idx].EqualsInput(input))
return cacheStochFilter[idx];
return CacheIndicator<StochFilter>(new StochFilter(), input, ref cacheStochFilter);
}
}
}

namespace NinjaTrader.NinjaScript.MarketAnalyzerColumns
{
public partial class MarketAnalyzerColumn : MarketAnalyzerColumnBase
{
public Indicators.StochFilter StochFilter()
{
return indicator.StochFilter(Input);
}

public Indicators.StochFilter StochFilter(ISeries<double> input )
{
return indicator.StochFilter(input);
}
}
}

namespace NinjaTrader.NinjaScript.Strategies
{
public partial class Strategy : NinjaTrader.Gui.NinjaScript.StrategyRenderBase
{
public Indicators.StochFilter StochFilter()
{
return indicator.StochFilter(Input);
}

public Indicators.StochFilter StochFilter(ISeries<double> input )
{
return indicator.StochFilter(input);
}
}
}

#endregion

SamirOfSalem · July 21st, 2020, 08:53 AM

Hi Bullywig.

See if using Color.FromArgb() works.

for example:

Code

Brush Red33percent = new SolidColorBrush(Color.FromArgb(33, 255, 0, 0));
Red33percent.Freeze();

BackBrush = Red33percent;


Brush Blue44percent = new SolidColorBrush(Color.FromArgb(44, 0, 0, 255));
Blue44percent.Freeze();

BackBrush = Blue44percent;

You might need to dispose() the brushess upon termination.

November 20th, 2020, 05:51 PM

SamirOfSalem

Hi Bullywig.

See if using Color.FromArgb() works.

for example:

Code

Brush Red33percent = new SolidColorBrush(Color.FromArgb(33, 255, 0, 0));
Red33percent.Freeze();

BackBrush = Red33percent;


Brush Blue44percent = new SolidColorBrush(Color.FromArgb(44, 0, 0, 255));
Blue44percent.Freeze();

BackBrush = Blue44percent;

You might need to dispose() the brushess upon termination.

Good day Samir,
I don't code at all, but am trying to follow the logical here. I wish to add a line to an existing script and I want the line to have opacity values.

This works fine, but there's no opacity
AddLine(Brushes.DarkGray, 0, NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine);

I tried adding you input, but receive an error
AddLine(SolidColorBrushes(Color.FromArgb(33, 255, 0, 0)) 0, NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine);

Can you correct what ever I am doing incorrectly?

Thank you, Ky

SamirOfSalem · November 21st, 2020, 06:22 AM

KySt

Good day Samir,
I don't code at all, but am trying to follow the logical here. I wish to add a line to an existing script and I want the line to have opacity values.

This works fine, but there's no opacity
AddLine(Brushes.DarkGray, 0, NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine);

I tried adding you input, but receive an error
AddLine(SolidColorBrushes(Color.FromArgb(33, 255, 0, 0)) 0, NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine);

Can you correct what ever I am doing incorrectly?

Thank you, Ky

Hi Ky.

From what I can tell, you're missing:
- "new" before SolidColorBrushes, it should be AddLine( new SolidColorBrushes(Color.FromArgb(33, 255, 0, 0))
- a comma before the 0 you're using for a value: AddLine( new SolidColorBrushes(Color.FromArgb(33, 255, 0, 0)) , 0, ....)

See if that helps.

P.S. You probably already know this, but NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine is just a label. You can use any name you want for the line. So just to make it easier to follow the logic, replace it with "My Line" or "Ky's Line" etc. keeping the " " quotes.

November 21st, 2020, 07:00 AM

SamirOfSalem

Hi Ky.

From what I can tell, you're missing:
- "new" before SolidColorBrushes, it should be AddLine( new SolidColorBrushes(Color.FromArgb(33, 255, 0, 0))
- a comma before the 0 you're using for a value: AddLine( new SolidColorBrushes(Color.FromArgb(33, 255, 0, 0)) , 0, ....)

See if that helps.

P.S. You probably already know this, but NinjaTrader.Custom.Resource.NinjaScriptIndicatorZeroLine is just a label. You can use any name you want for the line. So just to make it easier to follow the logic, replace it with "My Line" or "Ky's Line" etc. keeping the " " quotes.

Samir, thank you for replying.
I tried the syntax and get the following error:

SamirOfSalem · November 21st, 2020, 07:19 AM

KySt

Samir, thank you for replying.
I tried the syntax and get the following error:

LOL See what you made me do! I copy-pasted from your code

It's not SolidColorBrushes, just SolidColorBrush.

Try this:

Code

                AddLine(new SolidColorBrush(Color.FromArgb(33, 255, 0, 0)), 10, "Myline");

This should work, but just a couple of notes. I made the line value "10" because 0 would generate the line too close to a border, so you'll hardly see it. And also the colour choice above 33% of Red is hardly visible if you're using the default colours of NT. Once that line compiles okay for you, and you still can't see it, maybe try setting the chart's background to white or gray, etc.

November 21st, 2020, 07:35 AM

SamirOfSalem

LOL See what you made me do! I copy-pasted from your code

It's not SolidColorBrushes, just SolidColorBrush.

Try this:

Code

                AddLine(new SolidColorBrush(Color.FromArgb(33, 255, 0, 0)), 10, "Myline");

This should work, but just a couple of notes. I made the line value "10" because 0 would generate the line too close to a border, so you'll hardly see it. And also the colour choice above 33% of Red is hardly visible if you're using the default colours of NT. Once that line compiles okay for you, and you still can't see it, maybe try setting the chart's background to white or gray, etc.

Thank you Samir.
This plots. One question, how do I change the opacity of the line? It is really a zone, so I enlarge the size of the line.

SamirOfSalem · November 21st, 2020, 08:50 AM

Not sure "AddLine" is the best way to go for marking zones.

But if you must, and if this is the first line applied by your indicator, then add this next statement:

Code

Lines[0].Width = 5; //for a width of 5

second line would be [1],
third line would be [2],
and so on.

November 21st, 2020, 09:23 AM

SamirOfSalem

Not sure "AddLine" is the best way to go for marking zones.

But if you must, and if this is the first line applied by your indicator, then add this next statement:

Code

Lines[0].Width = 5; //for a width of 5

second line would be [1],
third line would be [2],
and so on.

My apologies Samir
I was not clear. I wish to change the opacity of the line (something like LineColorOpacity = 40

November 21st, 2020, 10:03 AM

KySt

My apologies Samir
I was not clear. I wish to change the opacity of the line (something like LineColorOpacity = 40

I dunno how to modify the opacity of a line... but you could draw a box with a height of 1 tic, and you could then have opacity control over it. Would that suit your needs?

opacity

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