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Re: character size in normal coordinates [message #13616 is a reply to message #13610]

Mon, 23 November 1998 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

David Foster (foster@bial1.ucsd.edu) writes:

> Since !D.[X|Y]_CH_SIZE give the width and height of the rectangle
> that encloses the "average" character in the current font, in
> device units (usually pixels) [from the Online help on !D]:
>
> x_ch_norm = !D.X_CH_SIZE / !D.X_SIZE
> y_ch_norm = !D.Y_CH_SIZE / !D.Y_SIZE
>
> would be my guess. If your window is 100 pixels wide, and your
> object is 50 pixels wide, then in normalized coordinates that
> would be .5 . Or am I having a bad hair day?

I would say your hair will be turning prematurely gray
unless you cast one of those values on the right-hand
side of the equation to FLOAT. :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Progamming: http://www.dfanning.com/
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[Message index]

		Re: character size in normal coordinates By: David Foster on Tue, 24 November 1998 00:00
		Re: character size in normal coordinates By: davidf on Mon, 23 November 1998 00:00
		Re: character size in normal coordinates By: David Foster on Mon, 23 November 1998 00:00
		Re: character size in normal coordinates By: Martin Schultz on Mon, 23 November 1998 00:00
		Re: character size in normal coordinates By: davidf on Sun, 22 November 1998 00:00
		Re: character size in normal coordinates By: Martin Schultz on Sun, 22 November 1998 00:00

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