Indicator won't plot when alert is written in

[maxpi]

I have the following code, it works fairly well, sometimes it stops ploting but it displays the current value at the side of the screen which is what I want always. When I include the section of code for generating the alert it does not plot and it does not display the current value.

protectedoverridevoid OnBarUpdate()
{
if (Bars.PercentComplete>0)
{
Plot0.Set(Volume[0] /Bars.PercentComplete);
}

/*
if (Volume[0] /Bars.PercentComplete >Volume[1])
{
Alert("myAlert", NinjaTrader.Cbi.Priority.High, "PRV", "Alert1.wav", 30, Color.Black, Color.Yellow);
}
*/
}

[NinjaTrader_Dierk]

Is there any funny stuff in the logs?

[maxpi]

I never think to go to the logs, sorry... it was trying to reference the bar before bar[0]...

I still wonder why, when updating every tick, it stops plotting at times, I can use it when it does that but it's annoying. If I reapply the indicators it brings the plot up to date.

[NinjaTrader_Dierk]

Glad it's resolved for you.

[KBJ]

I think this code might solve a couple of problems that I saw in the code...

protected override void OnBarUpdate()
{
  if (CurrentBar == 0) return;     // So we can access one bar back (Volume[1]).

  if (Bars.PercentComplete > 0)    // Has current bar started yet?
  {                                // Yes.
     Plot0.Set( Volume[0] / Bars.PercentComplete );  // Pro-rate current volume.

     if ( (Volume[0] / Bars.PercentComplete) > Volume[1] )
     {
         Alert( "myAlert", NinjaTrader.Cbi.Priority.High, "PRV", 
                 "Alert1.wav", 30, Color.Black, Color.Yellow );
     }
     return;
  }

  //
  // Current bar has not started yet...
  //
  Plot0.Set( Volume[1] );    // Display volume for last bar instead.
}

...what I noticed was a potential divide-by-zero if PercentComplete was zero, and an access violation on the first bar if the Alert code was un-commented.

Hope this helps.

KBJ