Have to hit F5 refresh

[photog53]

Platform NT 7.0.0.17

I have a relatively simple indicator that occasionally 'stutters' and stops painting bars.
If I hit F5, the chat refreshes and everything looks good....until the next stutter.
Everything else on the chart moves on per normal, but this indicator just occasionally stops painting bars.

What did I do wrong????

Code excerpt:

protected override void Initialize()
{
Add(new Plot(new Pen(Color.Red, 6), PlotStyle.Bar, "AO (Negative)"));
Add(new Plot(new Pen(Color.Green, 6), PlotStyle.Bar, "AO (Positive)"));
Add(new Plot(Color.Transparent, PlotStyle.Line, "AO"));

DrawOnPricePanel = false;
CalculateOnBarClose = false;
Overlay = false;
PriceTypeSupported = false;

fastline = new DataSeries(this);
slowline = new DataSeries(this);
}
//==============================================
protected override void OnBarUpdate()
{
if(CurrentBar == 0)
{
DrawHorizontalLine("Zero Line", true, 0, Color.DimGray, DashStyle.Solid, 1);
------ other code -------
}

ao = fastline[0]-slowline[0];
if(ao>ao1)
AOPos.Set(ao);
else
AONeg.Set(ao);
{
if(FirstTickOfBar)
ao1=ao;
}
AOValue.Set(ao);
}

[NinjaTrader_Tim]

Hi photog53,

Are you seeing any errors in the Log tab while running the indicator until it fails?

Does setting CalculateOnBarClose =true; make any difference?

Do you happen to be using MIN or MAX anywhere in your code? (there is a known bug)

[photog53]

Log:
Checked the log....no errors related to this indicator.
(I did find log errors for other activities...such as a reference to a strategy I deleted, and
reference to a NT6 indicator I tired to import.....but nothing related to this code).

Code change:
I will try CalculateOnBarClose = true;

Min/Max:
Yes....this thing references various Moving Averages....(it plots the diff between 2 moving average
lines)...and all of those make heavy use of Min/Max.

[NinjaTrader_Bertrand]

I believe you would not see an issue with COBC true, there are known issues with the MIN / MAX and COBC false in Beta 17, this will be fixed with Beta 18 - please retest your scenario then.

Thanks

[photog53]

Thanks......

[outsource]

Has this min max issue been resolved?I have the same problem.

[NinjaTrader_ChelseaB]

Hello outsource,

Yes, this MIN/MAX issue has been resolved.

Are you finding that MIN does not return the lowest value in a series for the given period (including the current bar with Calculate on bar close set to false)?

Are you finding that MAX does not return the highest value in a series for the given period (including the current bar with Calculate on bar close set to false)?

Do you have an example script (with no other code than what is necessary to demonstrate this) that I may test?

[outsource]

Hello outsource,

Yes, this MIN/MAX issue has been resolved.

Are you finding that MIN does not return the lowest value in a series for the given period (including the current bar with Calculate on bar close set to false)?

Are you finding that MAX does not return the highest value in a series for the given period (including the current bar with Calculate on bar close set to false)?

Do you have an example script (with no other code than what is necessary to demonstrate this) that I may test?

Hi Chelsea,

regardless of what the bar close is set to COBC = false or COBC = true.Also, regardless of the Autoscale is set to true or false.I have to left click on the chart or hit F5,to back the scalse in their place.I use percentages of the Y scale - 80% for upper scale,20% for lower scale.And sometimes the upper scale is being stuck in the middle of the chart until i left mouse click or hit F5.Then it comes back to its place.So the scale problem is still there!!!

Here is the snippet code:

int lastY = ChartControl.GetYByValue( Bars, Close[0] );			
double percentage = 100.0 - ( ( lastY * 100.0 ) / bounds.Height );

How do i get the scales stable?

Thank you

[NinjaTrader_ChelseaB]

Hello outsource,

Are you sure this is a related issue?

Are you using MIN() or MAX() in your code?

[outsource]

Hello outsource,

Are you sure this is a related issue?

Are you using MIN() or MAX() in your code?

No,i`m not sure if it`s related.There`s a line that uses max min,although it can be different things

public override void Plot( Graphics graphics, Rectangle bounds, double min, double max )

But,regardless of that,Chelsea,can we get back to the issue at hand,shall we?

Thank you.

[sledge]

Hi Chelsea,

regardless of what the bar close is set to COBC = false or COBC = true.Also, regardless of the Autoscale is set to true or false.I have to left click on the chart or hit F5,to back the scalse in their place.I use percentages of the Y scale - 80% for upper scale,20% for lower scale.And sometimes the upper scale is being stuck in the middle of the chart until i left mouse click or hit F5.Then it comes back to its place.So the scale problem is still there!!!

Here is the snippet code:

int lastY = ChartControl.GetYByValue( Bars, Close[0] );			
double percentage = 100.0 - ( ( lastY * 100.0 ) / bounds.Height );

How do i get the scales stable?

Thank you

Have you taken a look at this source code?

http://www.ninjatrader.com/support/forum/local_links.php?action=sendtofriend&catid=4&linkid=467

[outsource]

Have you taken a look at this source code?

http://www.ninjatrader.com/support/f...d=4&linkid=467

Yes,but i don`t want an artificial scale,i need Ninja scale,but so its value wouldn`t stick in the middle of the chart until you mouse click or hit F5,like i already said.

[Harry]

Here is the snippet code:

int lastY = ChartControl.GetYByValue( Bars, Close[0] );            
double percentage = 100.0 - ( ( lastY * 100.0 ) / bounds.Height );

How do i get the scales stable?

Thank you

If you wish to code a custom plot, you need to do it correctly. You can only access Close[0] in OnBarUpdate(), but not in public override void Plot().

The behaviour that you observe is the result of a flawed custom plot.

[outsource]

If you wish to code a custom plot, you need to do it correctly. You can only access Close[0] in OnBarUpdate(), but not in public override void Plot().

The behaviour that you observe is the result of a flawed custom plot.

It`s already in OnBarUpdate() section

protected override void OnBarUpdate()
        {
			
						
			BarColorSeries.Set( Math.Max( 0, CurrentBar + Math.Max( 0, Displacement ) + 
						( CalculateOnBarClose ? 1 : 0 ) ), Color.Transparent );
			CandleOutlineColorSeries.Set( Math.Max( 0, CurrentBar + Math.Max( 0, Displacement ) + 
						( CalculateOnBarClose ? 1 : 0 ) ), Color.Transparent );
						
			if( Historical || plottedBounds == null )
			{
				return;
			}
			
			Rectangle bounds = (Rectangle)plottedBounds;
			
			int lastY = ChartControl.GetYByValue( Bars, Close[0] );			
			double percentage = 100.0 - ( ( lastY * 100.0 ) / bounds.Height );
			
			
			if( percentage >= overbroughtPercentage )
			{
				if( !currentlyOverBrought )
				{
					currentlyOverBrought = true;
					sendNotifications( true );
				}
			}
			else
			{
				if( currentlyOverBrought )
				{
					sendNotifications( false );
					
				}
				currentlyOverBrought = false;
				
			}

[outsource]

@Harry,

i got it.Yes, i have these line in the public override void Plot region:

Lines[0].Value = Instrument.MasterInstrument.Round2TickSize(min + (max - min)*(overbroughtPercentage/100));
Lines[1].Value = Instrument.MasterInstrument.Round2TickSize(min + (max - min)*(oversoldPercentage/100));

But,placing them under OnBarUpdate region doesnt work.

How would you place them in the OnBarUpdate section?An example?

Some of the additional parts,de bene esse:


protected override void Initialize()

{
Add(new Line(Color.DarkGreen, 0, "OverboughtAlertLine"));
Add(new Line(Color.DarkRed, 0, "OversoldAlertLine"));
Overlay = true;
BarsRequired = 0;			
AutoScale = false;
			
 }

#region Variables

private double overbroughtPercentage = 100;
private double oversoldPercentage = 0;