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Re: WIN device color and backgnd reset after set_plot command [message #47184 is a reply to message #47071]

Thu, 26 January 2006 02:33

Paolo Grigis
Messages: 171
Registered: December 2003

Senior Member

> [...]
>
> Well, this unhappiness is caused by the odd behavior
> of the PostScript device. It switches foreground and
> background colors, then completely ignores the background
> color. ("You can have any background color you like in PostScript
> as long as it is white.") Then, when it switches back, it
> mindlessly sets !P.Color to what had previously been
> !P.Background and sets !P.Background to 0.
>
> Why? I don't know why.

Maybe to lower the toner consumption rate? It may have been
implemented after the discovery of scientists printing
tons of pages featuring white plots on black background,
giving nightmares to the people in the budget department ;-)

Ciao,
Paolo

The gods decreed it at some
> time in the past and that's the way it is. Get used
> to it, is my advice. I think it falls under the
> category of "direct graphics", which I understand to
> read "hopeless". :-)
>
> Knowing this, of course, allows you to work around it.
> Most of us build "wrappers" that allow us to switch
> from our graphics device back to our display device,
> and visa versa. We change the thickness of plots, the
> fonts, and all of the myriad other things we have to
> tweak to work around this creaky system. Here is another
> thing to go in there.
>
> Cheers,
>
> David
>
>

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[Message index]

		WIN device color and backgnd reset after set_plot command By: guillaume.drolet.1 on Sat, 21 January 2006 20:52
		Re: WIN device color and backgnd reset after set_plot command By: K. Bowman on Thu, 26 January 2006 09:30
		Re: WIN device color and backgnd reset after set_plot command By: guillaume.drolet.1 on Thu, 26 January 2006 07:12
		Re: WIN device color and backgnd reset after set_plot command By: David Fanning on Thu, 26 January 2006 06:21
		Re: WIN device color and backgnd reset after set_plot command By: Paolo Grigis on Thu, 26 January 2006 02:33
		Re: WIN device color and backgnd reset after set_plot command By: David Fanning on Thu, 26 January 2006 02:21
		Re: WIN device color and backgnd reset after set_plot command By: David Fanning on Thu, 26 January 2006 01:56

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