Big plot value makes it to disappear

[fx.practic]

I made indicator that can mark some bars.

It looks like this:

        
        protected override void Initialize()
        {
            Add(new Plot(Color.FromKnownColor(KnownColor.RoyalBlue), PlotStyle.Bar, "Plot0"));
            Overlay                = true;
            AutoScale           = false;
        }


        protected override void OnBarUpdate()
        {
            if( CurrentBar < 1 ) return;          
            if( Time[1].Hour != Time[0].Hour ) Plot0.Set( 1000000 );
        }

When indicator work on 8 range chart - it work normally.
But when I put it on 1 range chart it also work ok until I scroll chart - after scrolling indicator disappeared.

If i write Plot0.Set( 10000 ), it begin to work normally.

What value I have to set to see vertical bar on all instruments and all charts?
May be Close*2 ?

[fx.practic]

Plot0.Set( Close*2 )

worked good until I put

Plots[0].DashStyle = DashStyle.Dot;

into OnStartUp(). After that, vertical lines disappeared again.

[Calonious]

Are you getting any errors in your log tab on the control center?

[fx.practic]

Oh, thank You! Ofcourse, how can I forget to look there!

There was errors - screenshot attached.

So, what are the biggest and smallest valid plot values?

[Calonious]

Believe they are double.MaxValue and MinValue

[fx.practic]

This is logical. But, 1 000 000 produce error.
And approximate range of double ±5.0 × 10−324 to ±1.7 × 10+308

By the way, I found out that Plot0.Set( Close[0]*2 ) slows scroll significantly whem plots are visible.

And Plot0.Set( Close[0] ) don't slows chart scrolling.

[fx.practic]

Close[0] +150* TickSize, for example, don't slow 1 range, but it looks strange on 16 range (screenshot).

So the question: how to determine number of ticks that enough to hide upper edge of bar
beyond upper chart edge (for different timeframes, scaling, instruments) ?


(I know that it can be done by DrawVerticalLine() but big quantity of chart objects significantly slows operating with chart.)

P.S.I use Close[0] +1000* TickSize for all CL charts now, but I don't like this solution at all.

[NinjaTrader_PatrickH]

Hello fx.practic,

You could run something like MAX(), but then again you are concerned on performance and this will likely slow performance if you had MAX(High, CurrentBar-1)[0] as the plot.

So you have a few choices, I would recommend experimenting until you find something that works best for your specific cases.