Using Add() Inside a Strategy

[bltdavid]

I have these global variables in my class,

[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]  private IDataSeries MAFunc = null;[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]  private int MAPeriod = 14;
[/SIZE][/FONT][/COLOR]

Inside my strategy parameters, I ask the user which of several MA indicators they would like to use. Then I use code like this inside Initialize() ...

[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]  switch (MAType)[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]  {[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]     case MATypeIs.SMA:[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]         MAFunc = SMA(Input, MAPeriod);
[/SIZE][/FONT][/COLOR][COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]        break;[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]     case MATypeIs.EMA:[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]         MAFunc = EMA(Input, MAPeriod);[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]         break;
[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]    etc etc etc[/SIZE][/FONT][/COLOR]
[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]  }[/SIZE][/FONT][/COLOR]

In OnBarUpdate I like using MAFunc[0] to get the value of the user-specified MA for the most recent bar.

And, I can also use MAFunc to calculate the slope of the MA over the last 8 bars,

[COLOR=#000000][FONT=HelveticaNeue-Light][SIZE=4]Slope(MAFunc, 8, 0);[/SIZE][/FONT][/COLOR]

This all works quite well. MAFunc is a data series that represents whatever MA indicator the user selected in the parameters.

Now comes the effort to make the strategy add the indicator to the chart for display.

 
  Add(MAFunc);  // <-- adding this code doesn't work

How do I display the indicator represented by MAFunc to the chart?

[NinjaTrader_Bertrand]

Welcome to our forums here bltdavid and thanks for the post. Unfortunately we would expect that outcome, since only complete indicators could be Add() for visualization, not elements such as a single data series. As workaround on the regular charts you could look into this technique here - http://www.ninjatrader.com/support/f...ead.php?t=6651