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Re: Postscript settings [message #77277 is a reply to message #77275]

Fri, 19 August 2011 11:18

wlandsman
Messages: 743
Registered: June 2000

Senior Member

A possible problem with switching from vector to postscript fonts is if you are using the CHARTHICK keyword. I don't know if this is a long-standing IDL bug, or a long-standing problem with the documentation. The V8.1 documentation about scalable hardware fonts (e.g. the XYOUTS help) reads as follows:

"One example of hardware fonts which can be scaled are PostScript fonts. If you are using PostScript fonts, the keywords CHARTHICK and CHARSIZE will have an effect on a call to XYOUTS. Of the devices we provide that support hardware fonts, only the PostScript device uses scalable PostScript fonts for its “hardware” font system. All other devices use a bitmapped font technology."

In reality, IDL ignores the CHARTHICK keyword for postscript fonts. The CHARSIZE keyword *does* work under postscript with proportional scaling (so the thickness is also increased).

To summarize, the documentation should read:
"With postscript fonts, the CHARSIZE keyword will proportionately scale the characters (including the thickness). The CHARTHICK keyword is ignored."

--Wayne

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[Message index]

		Re: Postscript settings By: David Fanning on Fri, 19 August 2011 12:27
		Re: Postscript settings By: wlandsman on Fri, 19 August 2011 12:24
		Re: Postscript settings By: Michael Galloy on Fri, 19 August 2011 12:20
		Re: Postscript settings By: wlandsman on Fri, 19 August 2011 11:56
		Re: Postscript settings By: David Fanning on Fri, 19 August 2011 11:55
		Re: Postscript settings By: David Fanning on Fri, 19 August 2011 11:51
		Re: Postscript settings By: David Fanning on Fri, 19 August 2011 11:43
		Re: Postscript settings By: IDLgraphics on Fri, 19 August 2011 11:33
		Re: Postscript settings By: wlandsman on Fri, 19 August 2011 11:27
		Re: Postscript settings By: wlandsman on Fri, 19 August 2011 11:18
		Re: Postscript settings By: David Fanning on Fri, 19 August 2011 11:02

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