Additional Plots not drawing

[tgn55]

My indicator adds 3 extra plots... which are actually just a few SMAs of the primary input series. Nothing weird... I AddPlot in State.SetDefaults, assign to the Values array in OnBarUpdate, all by the book. The only maybe odd thing is, my "indicator" has no value itself... I am just using drawing tools to show stuff, mirroring my strategy trades, actually...

Looks like this:
first... a snippet from OnStateChange:

        
case State.SetDefaults:
    Name              = "AAInd0905";
    PrintTo           = PrintTo.OutputTab1;
    Calculate         = Calculate.OnBarClose;
    IsOverlay         = true;

    AddPlot(Brushes.Goldenrod,"myFast");
    AddPlot(Brushes.SeaGreen,"mySlow");
    AddPlot(Brushes.Blue,"myTrend");
break;

...and this is the final few lines of OnBarUpdate

          
    Values[0][0] = smaFast[0];
    Values[1][0] = smaSlow[0];
    Values[2][0] = smaTrend[0];

On my chart, I see the pricemarkers for the 3 extra plots. In the DataBox I see the values, and I see the plots in the GUI... but the plot lines are not drawn. All three elements are shown in the pic...
Like this:



Got me stumped why not. Any help appreciated...

[NinjaTrader_Kate]

Hello tgn55,

Thank you for your post.

I can't really tell from your code snippets why this isn't plotting correctly for you. Would you be able to provide the current code for your indicator? You can either attach it to your reply here if you don't mind posting it publicly. If you prefer to keep your code private, please email platformsupport [at] ninjatrader [dot] com. Attach a copy of your indicator. In the Subject line please put ATTN Kate W. 2267177 and put a link to this post in the email body.

Thanks in advance; I look forward to assisting you further.

[tgn55]

Hi Kate,
it's after 4 AM where I am... I'm going to bed! But I have realised I do one thing that is perhaps not common... I do some stuff in OnRender. I'll check that tomorrow, see if is affecting things.

Goodnight !

[NinjaTrader_Kate]

Hello tgn55,

Thank you for your reply.

Bed is very understandable at 4 am! When you take a look at your script when you wake up, one big thing to double check is that you're calling the base OnRender inside your custom OnRender() so that regular plots work as they were designed. So, like this:

protected override void OnRender(ChartControl chartControl, ChartScale chartScale)
{
  // call the base.OnRender() to ensure standard Plots work as designed
  base.OnRender(chartControl, chartScale);

  // custom render logic
}

I'll keep an eye out for your reply tomorrow.

Thanks in advance; I look forward to assisting you further.

[tgn55]

Ah... that is likely the issue then...as I do NOT do that ;-) Bed will have to wait another 5 minutes !!

Yep... that fixed it!! Thanks...

[tgn55]

Given it is essential to call the base method in OnRender before any custom logic... I was wondering if that also applies to other overrides... like OnPositionUpdate for example?

[NinjaTrader_Kate]

Hello tgn55,

Thank you for your reply.

OnRender() is really the only one you'd ever have to do this with. It has to do with how the OnRender() works in general. Basically it needs to be able to have built in plot functions but still give you the option to render your own drawing objects AND allow you to use both without one breaking the other. Hence, the calling of the base method.

Please let us know if we may be of further assistance to you.

[tgn55]

Sweet - thanks for the reassurance !