Performance Issue

TeeChart VCL for Borland/CodeGear/Embarcadero RAD Studio, Delphi and C++ Builder.
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X-ray
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Performance Issue

Post by X-ray » Thu Jul 10, 2025 1:23 pm

Hello,

We have some performance problems drawing large TColorGridSeries of sparse matrices, see attached plot. Basically, there is only the small diagonal patch in the middle where there is data to plot:
IsoLinesPlotScreenshot 2025-07-10 150510.png
IsoLinesPlotScreenshot 2025-07-10 150510.png (359.69 KiB) Viewed 374 times
The area of the Red Triangles is empty and doesn’t contain any data. Is there a way to speed up handling and drawing by telling the plot that there are parts of the data that don’t need to be plotted?

Thanks and best regards,
Thomas

Yeray
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Re: Performance Issue

Post by Yeray » Fri Jul 11, 2025 10:24 am

Hello Thomas,

Do you have a simple example we can run as-is to reproduce the situation here?
Thanks in advance.
Best Regards,
ImageYeray Alonso
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Steema Software
Av. Montilivi 33, 17003 Girona, Catalonia (SP)
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