Errors on Multi-colored plots

[freeway]

Trying to plot 2 EMA's with multi colors - Rising and falling colors. Getting CS0103, CS1502 and CS1503 errors on the following code:

protected override void Initialize()
{
Add(new Plot(Color.FromKnownColor(KnownColor.SkyBlue), PlotStyle.Line, "LittleMo"));
Add(new Plot(Color.FromKnownColor(KnownColor.SkyBlue), PlotStyle.Line, "BigMo"));

EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Orange;
EMA(BigMoPeriod).Plots[1].Pen.Color = Color.Blue;

Plots[0].Pen.Width = 2;
Plots[1].Pen.Width = 2;

Plots[0].PlotStyle = PlotStyle.Line;
PLots[1].PlotStyle = PlotStyle.Line;

Add(EMA(LittleMoPeriod));
Add(EMA(BigMoPeriod));

CalculateOnBarClose = true;
}

Can you help?

[NinjaTrader_Matthew]

Hello,

If you are working with an indicator, Adding a plot will be a big different than an Indicator. You should be setting the EMA values in the OnBarUpdate section. In addition, the arguments for the Add() method will be different.

Please see our Reference Sample on Plotting from within a NinjaScript Strategy

http://www.ninjatrader.com/support/forum/showthread.php?t=6651

[freeway]

I am developing a Strategy. I now have corrected the problem I was referring to above. But the plots only plot in 1 color. Here is my code:

if (Rising(EMA(LittleMoPeriod)))
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Blue;
}
else if (Falling(EMA(LittleMoPeriod)))
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Red;
}
else
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = EMA(LittleMoPeriod).Plots[1].Pen.Color;
}

if (Rising(EMA(BigMoPeriod)))
{
EMA(BigMoPeriod).Plots[0].Pen.Color = Color.Lime;
}
else if (Falling(EMA(BigMoPeriod)))
{
EMA(BigMoPeriod).Plots[0].Pen.Color = Color.Black;
}
else
{
EMA(BigMoPeriod).Plots[0].Pen.Color = EMA(BigMoPeriod).Plots[1].Pen.Color;
}

How can I get it to plot the rising and falling colors?
Thanks

[NinjaTrader_Matthew]

Hello,

All of the .Plots[] you are using refer to only Plot[0]. which is the first plot

To assign plot values to this, you would need to specify which plot specificly you would like to change, Plot[1], Plot[2], etc.

[freeway]

Not sure what the different plots refer to. Would there be 4 plots since I have 2 colors and 2 EMA's?

[bukkan]

the right code will be

EMA(LittleMoPeriod).PlotColors[0][0] = Color.LightGreen

[freeway]

Thanks.While I was making that change to my Strategy something went wrong with my mouse. Now when I try to run this Strategy It won't bring up the Properties window.
How do I fix that?

[NinjaTrader_Brett]

Hello,

Specifically what mouse click doesn't work or doesn't display?

[freeway]

The sequence I use is: File->New->Strategy Analyzer-> click on Instrument -> Right Click on Backtest
Then I click on the strategy I'm interested in running in the Backtest window

Now the correct Parameter window does not display.
Also I can not access the Out Put Window. Nothing happens when i click on it.
Do I need to start over with this Strategy?

[NinjaTrader_Brett]

Hello,

Yea looks like you have a strategy error or compile issue in the code.

Can you try temporary deleting it (Save a copy of the code in word first.

Does the problem go away?

I look forward to assisting you further.

[freeway]

I have created a new Strategy and I am still getting the wrong Properties window when I run a backtest. Is there a way I can send it to you?


I might have found and error. After I compile I get a message in the Output window "**NT** Failed to call method 'Initialize' for strategy SpitFire2..... Index was outside the bounds of the array.' Here is code:

protected override void Initialize()
{
CalculateOnBarClose = true;

ClearOutputWindow();

EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Blue;
EMA(BigMoPeriod).Plots[1].Pen.Color = Color.Lime;

EMA(LittleMoPeriod).Plots[0].Pen.Width = 2;
EMA(BigMoPeriod).Plots[1].Pen.Width = 2;

EMA(LittleMoPeriod).Plots[0].PlotStyle = PlotStyle.Line;
EMA(BigMoPeriod).Plots[1].PlotStyle = PlotStyle.Line;

Add(EMA(LittleMoPeriod));
Add(EMA(BigMoPeriod));


}

[NinjaTrader_Brett]

Hello,

Sure please email me at support at ninjatrader dot com and reference this forum post. We will further assist and check it out and even test it on our side if needed.

I look forward to assisting you further.

[koganam]

I have created a new Strategy and I am still getting the wrong Properties window when I run a backtest. Is there a way I can send it to you?


I might have found and error. After I compile I get a message in the Output window "**NT** Failed to call method 'Initialize' for strategy SpitFire2..... Index was outside the bounds of the array.' Here is code:

protected override void Initialize()
{
CalculateOnBarClose = true;

ClearOutputWindow();

EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Blue;
EMA(BigMoPeriod).Plots[1].Pen.Color = Color.Lime;

EMA(LittleMoPeriod).Plots[0].Pen.Width = 2;
EMA(BigMoPeriod).Plots[1].Pen.Width = 2;

EMA(LittleMoPeriod).Plots[0].PlotStyle = PlotStyle.Line;
EMA(BigMoPeriod).Plots[1].PlotStyle = PlotStyle.Line;

Add(EMA(LittleMoPeriod));
Add(EMA(BigMoPeriod));


}

You are using a fully qualified classpath to EMA. EMA() has only one plot, so you cannot reference Plots[1].

[freeway]

I have the following code in the OnBarUpdate() method:

if (Rising(EMA(LittleMoPeriod)))
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Blue;
EMA(LittleMoPeriod).Plots[0].Pen.Width = 2;
}
else if (Falling(EMA(LittleMoPeriod)))
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = Color.Red;
EMA(LittleMoPeriod).Plots[0].Pen.Width = 4;
}
else
{
EMA(LittleMoPeriod).Plots[0].Pen.Color = EMA(LittleMoPeriod).PlotColors[0][1];
}

if (Rising(EMA(BigMoPeriod)))
{
EMA(BigMoPeriod).Plots[0].Pen.Color = Color.Lime;
EMA(BigMoPeriod).Plots[0].Pen.Width = 2;
}
else if (Falling(EMA(BigMoPeriod)))
{
EMA(BigMoPeriod).Plots[0].Pen.Color = Color.Black;
EMA(BigMoPeriod).Plots[0].Pen.Width = 2;
}
else
{
EMA(BigMoPeriod).PlotColors[1][0] = EMA(BigMoPeriod).PlotColors[1][1];
}

It plots the EMA's OK but they are plotted only with the Rising color. It is as if the Falling code is ignored.

You say EMA has only 1 Plot. Does that mean I can only reference 1 plot in a Strategy?

[NinjaTrader_Matthew]

freeway,

Try doing it like this:

  protected override void Initialize()
            {
            CalculateOnBarClose     = true;

            ClearOutputWindow();

            Add(EMA(LittleMoPeriod));
            Add(EMA(BigMoPeriod));
            }

protected override void OnBarUpdate()
        {
            
            if (Rising(EMA(LittleMoPeriod)))
            {
            EMA(LittleMoPeriod).PlotColors[0][0] = Color.Blue;
            EMA(BigMoPeriod).Plots[0].Pen.Width = 2;
            }
            else if (Falling(EMA(LittleMoPeriod)))
            {
            EMA(LittleMoPeriod).PlotColors[0][0] = Color.Red;
            EMA(LittleMoPeriod).Plots[0].Pen.Width = 4;
    
            }
            else
            {
            EMA(LittleMoPeriod).Plots[0].Pen.Color = EMA(LittleMoPeriod).PlotColors[0][0];
            }

            if (Rising(EMA(BigMoPeriod)))
            {
            EMA(BigMoPeriod).PlotColors[0][0] = Color.Lime;
            EMA(BigMoPeriod).Plots[0].Pen.Width = 2;
            
            }
            else if (Falling(EMA(BigMoPeriod)))
            {
                
            EMA(BigMoPeriod).PlotColors[0][0] = Color.Black;
            EMA(BigMoPeriod).Plots[0].Pen.Width = 2;
            
            }
            else
            {
            EMA(BigMoPeriod).PlotColors[1][0] = EMA(BigMoPeriod).PlotColors[1][0];
            } 

        }

Please let me know if you have any questions on this. If that does not work, try completely removing the strategy from the chart and adding it back in and re-enabling it.