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[chart] rendering and resolution [message #975929]

Thu, 08 November 2012 07:23

moritz du

Messages: 102
Registered: February 2010

Senior Member

I am rendering charts with some labels rotated by 45°. This makes the font look bad. So i googled around and found:

http://www.birt-exchange.org/org/forum/index.php/topic/11781-poor-chart-font-quality/

but the solution there doesn't work so i tired this

dRenderer.setProperty(IDeviceRenderer.DPI_RESOLUTION, new Integer(300));

from here but this doesn't work neither.

actually neither the line above nor

bo.scale(72d / dRenderer.getDisplayServer().getDpiResolution());

seem to have any effect (neither separately nor together)?!

So what does those lines do and how they work? is there a way to get a better render quality by adjusting the resolution? or is this all bullshit?

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Re: [chart] rendering and resolution [message #976855 is a reply to message #975929]

Thu, 08 November 2012 22:29

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

What's your BIRT version?

Michael

Developer Evangelist, Silanis

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Re: [chart] rendering and resolution [message #977387 is a reply to message #976855]

Fri, 09 November 2012 08:43

moritz du

Messages: 102
Registered: February 2010

Senior Member

4.2

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Re: [chart] rendering and resolution [message #981394 is a reply to message #977387]

Mon, 12 November 2012 11:26

moritz du

Messages: 102
Registered: February 2010

Senior Member

i think this need a push to compensate the weekend gap.

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Re: [chart] rendering and resolution [message #982429 is a reply to message #981394]

Tue, 13 November 2012 05:57

Michael Williams

Messages: 1925
Registered: July 2009

Senior Member

You could try something like this in your beforeFactory:

importPackage(Packages.org.eclipse.birt.report.engine.api);
reportContext.getAppContext().put( EngineConstants.APPCONTEXT_CHART_RESOLUTION, 500 );

Let me know. This works for older versions, in PDF. For newer versions, last I checked, it seemed to just allow for closer zooming with no further clarification. If it doesn't help the clarity. Please search the bugs to see if this is already reported. If not, please do so. Thanks!

Michael

Developer Evangelist, Silanis

[Updated on: Tue, 13 November 2012 05:59]

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