Relative Strength Plot

[russ123]

Hello,

I have developed a relative strength indicator that plots the 5 day relative strength vs. the spy. I want to plot the 20 day on it also. How do I add the second plot for the 20 day relative strength on the same pane as the 5 day relative strength ?

public class relativestrength : Indicator
{
#region Variables
int period =5; // this is for the 5 day relative strength. For the 20 day, it would be 20
private DataSeries RelStr;
double rs =0;
#endregion

protected override void Initialize()
{
Add("SPY", PeriodType.Day, 1);
Overlay = false;

// adding a 0 line. when the plot is above this line, stock is stronger than spy for the //specified period. When the plot is below this line, stock is weaker than the spy for the //specified period (eg 5 day -20 day etc.)
Add(new Line(Color.FromKnownColor(KnownColor.DarkOliveGree n), 0, "Zero"));

RelStr= new DataSeries(this);
CalculateOnBarClose=true;


}

protected override void OnBarUpdate()
{

if (CurrentBar <period){return;}
if(BarsInProgress==0)
{

// this is the relative strength formula
rs = ((Close[0]/Closes[1][0])-(Close[period]/Closes[1][period]))/(Close[period]/Closes[1][period]);

RelStr.Set(rs);
Value.Set(SMA(RelStr,3)[0]);
}

}

#region Properties

[Description("Numbers of bars used for calculations")]
[GridCategory("Parameters")]
public int Period
{
get { return period; }
set { period = Math.Max(1, value); }
}
#endregion
}

[NinjaTrader_JessicaP]

Hello russ123, and thank you for your question.

I am including a link to the Help Guide section on working with multiple time frames (as is your case) and instruments.

http://ninjatrader.com/support/helpGuides/nt7/multi_time_frame__instruments.htm?zoom_highlightsub=multi%2Btime%2Bframe

When you add your 20 day time series, I would recommend adding it like this :

Add("SPY", PeriodType.Day, 20);

I would add a Plot for relative strength (which will plot in the same panel as your indicator), like this,

Add(new Plot(Color.Orange, "RelativeStrength"));

Please let us know if there are any other ways we can help.

[russ123]

Extending relative strength 5 to relative strength 5 and 20

Any body know the code to add to this indicator to allow for both plots - relative strength 5 and relative strength 20. Appreciate the feedback.

[NinjaTrader_JessicaP]

Hello russ123,

Can I ask, what was the result when you added the two lines of code I sent you to your initialize routine? If you can provide us with a stripped down version of your code I would be happy to return you a tested copy with that code added, which will allow both data series to plot in the same panel.