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 Post subject: Charts : Overflow Error
PostPosted: Tue Nov 19, 2019 1:19 pm 
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Joined: Mon Apr 02, 2018 1:39 pm
Posts: 14
I have problems plotting more than 1 months worth of data for my alphas.
Up to 1 month, using the Log function works fine.
However, after a certain amount of data to plot, OQ has the following "overflow error" : (see trace below)

It obviously has something to do with the amount of data to plot. I have a 32GB machine with 4GB video card .. memory is not an issue
The standard algos work correctly ; indeed so does my system up to a point.

Any ideas?

Thanks



See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.OverflowException: Overflow error.
at System.Drawing.Graphics.CheckErrorStatus(Int32 status)
at System.Drawing.Graphics.DrawLine(Pen pen, Single x1, Single y1, Single x2, Single y2)
at SmartQuant.ChartViewers.TimeSeriesViewer.Paint(Object obj, Pad pad)
at SmartQuant.Charting.Pad.PaintAll(Graphics Graphics)
at SmartQuant.Charting.Pad.Update(Graphics Graphics)
at SmartQuant.Charting.Chart.UpdatePads(Graphics g)
at SmartQuant.Charting.Chart.OnPaint(PaintEventArgs pe)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


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PostPosted: Wed Nov 20, 2019 2:34 pm 
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Joined: Wed May 05, 2010 9:49 pm
Posts: 562
Hi,
1) what type and version of software do you use?
2) how many times have you approximately called the Log (...) function?


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PostPosted: Fri Nov 22, 2019 10:56 am 
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Joined: Mon Apr 02, 2018 1:39 pm
Posts: 14
Version 1.0.7223.32819 64bit

Each alpha calls the function approx 5500 times per day for a backtest ..

I have at least 2 alphas that I would like to graph ...


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PostPosted: Fri Nov 22, 2019 11:09 am 
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Joined: Wed May 05, 2010 9:49 pm
Posts: 562
zbxxxx wrote:
Version 1.0.7223.32819 64bit

Each alpha calls the function approx 5500 times per day for a backtest ..

I have at least 2 alphas that I would like to graph ...

5500 logs per day is not a heavy value for charts.
Can you provide sample solution which can reproduce this problem?
You can send it PM


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