Dynamically change Color

[GuyFB]

I tried the example in the help screen to dynamically change color of a plot. However, only the last change is active throughout the plot so I get only one change rather than a change for different bars.
Example from help:
// Dynamically change the primary plot's color based on the indicator value
protected override void OnBarUpdate()
{
if (Values[0] > 100)
Plots[0].Pen = new Pen(Color.Blue);
else
Plots[0].Pen = new Pen(Color.Red);
}


My code:
if(piSignal[0] == 1)
{Plots[2].Pen = new Pen(Color.Green,3); else if (piSignal[0] == -1)
{Plots[2].Pen = new Pen(Color.Red,3);
else
{Plots[2].Pen = new Pen(Color.Yellow,3);

[NinjaTrader_Ray]

Correct, your code does exactly that. If you want to have different plotted colors check out this sample.

http://www.ninjatrader-support.com/vb/showthread.php?t=3227

[rcsingleton]

Question about dynamically changing Plot colors

Hello Ray.

I am taking a look at the example you posted on dynamically changing Plot colors.

Question. I'm not sure how 'RisingPlot.Set(1, SMA(Period)[1]);' is working.

I have ..

Add(new Plot(Color.Green, PlotStyle.Dot, "Upper"));
Add(new Plot(Color.Red, PlotStyle.Dot, "Lower"));
Add(new Plot(Color.Yellow, PlotStyle.Dot, "Middle"));

But when I get to ..

UpperPlot.Set(1, MACD(fastLen, slowLen, smooth)[1]);
UpperPlot.Set(MACD(fastLen, slowLen, smooth)[0]);

The compiler tells me 'The name 'UpperPlot' does not exist in the current context'.

What am I missing ?

Why does the compiler recognize 'RisingPlot.Set' and not 'UpperPlot.Set' ?

Regards,
R. C. Singleton

[NinjaTrader_JoshP]

Hi rcsingleton,

The plot names are defined in the collapsed "Properties" section of your code.

// Adds three DataSeries to store the values of the three plots added in Initialize()
[Browsable(false)]    // this line prevents the data series from being displayed in the indicator properties dialog, do not remove
[XmlIgnore()]        // this line ensures that the indicator can be saved/recovered as part of a chart template, do not remove
public DataSeries [COLOR=Red]RisingPlot[/COLOR]
{
    get { return Values[0]; }
}

The index on Values corresponds to the Add() method you had above.

Add(new Plot(Color.Green, PlotStyle.Dot, "Upper"));
Add(new Plot(Color.Red, PlotStyle.Dot, "Lower"));
Add(new Plot(Color.Yellow, PlotStyle.Dot, "Middle"));

Index of 0 corresponds with "Upper", index=1="Lower", index=2="Middle".

[rcsingleton]

Thank You

Thank you Josh.

That did the trick. Will remember to look at 'Properties' section in the future.