[OS X TeX] I do like ps4pdf questions

Roger Hart rhart at mail.utexas.edu
Fri Feb 11 11:15:05 EST 2005

Dear Dick and Ross,

Thank you so very much for your kind and very expert help.  The problem 
does seem to have been auto-rotation. Now knowing what the problem is, 
I have solved it simply by including more upright characters, in white, 
so they aren't visible.

To me, at least, auto-rotation is counter-intuitive, so much so that it 
never occurred to me, and since I've repeatedly had problems with xy 
producing unexpected results, I'd suspected xy was the problem.

But again, so many thanks for your generous help.

And yes, it is TeXShop I'm using. So I would especially like to again 
thank you, Dick, and others who have contributed, for all your work on 
TeXShop.  It is an absolutely wonderful program, without which my work 
would be considerably more difficult if not impossible. (I'm especially 
grateful for the Unicode compatibility, and the regex search/replace 
you've just added.)

So, many many thanks,


On Feb 11, 2005, at 2:23 AM, Richard Koch wrote:

> Ross and Roger,
> I haven't been following the details of the ps4pdf discussion, but the 
> recent
> note from Ross range a bell. He wrote
> 	The problem is *definitely* within Ghostscript.
> 	It seems to have a built-in routine that tries to guess
> 	what the orientation should be. It seems to work by
> 	counting the number of font characters that are upright
> 	and how many are rotated.
> Indeed, gs has a flag to turn this behavior off:
> 	-dAutoRotatePages=/None
> I don't know if TeXShop was involved in your experiments.
> TeXShop uses the epstopdf script to convert eps files to pdf, and
> of course epstopdf calls gs. TeXShop uses an internal version of
> epstopdf in its bundle rather than the external script in the
> tetex/bin directory because the internal epstopdf script can set
> this flag when it calls gs. Last April 17 Gerben added a flag to the 
> external
> epstopdf to set the flag, so this internal version isn't actually
> needed anymore.
> The puzzle to me is that latex + ghostscript calls a different script,
> altpdflatex, which doesn't seem to add the flag. So I don't understand
> everything.
> Dick
> koch at math.uoregon.edu

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