[OS X TeX] Landscape mode?

[Bruno Voisin]

Le 3 mars 05, à 11:42, David Derbes a écrit :

> After reading about a "Cheat Sheet" (summary of LaTeX commands) on 
> this list, I Google'd one, but in attempting to typeset the document, 
> I discovered that landscape mode simply doesn't work with my setup. 
> I'm using Gerben's installation with TeXShop, and even a thing like
>
> \documentclass[10 pt, landscape]{article}
> \begin{document}
> This is a test.
> \end{document}
>
> fails to be typeset in landscape mode.

Usually including the package graphics, namely

  \includepackage{graphics}

should solve the issue (don't forget to set the Page Setup to landscape 
mode before printing, too).

The problem is that, in pdfTeX, additional parameters have to be set:

	\pdfpagewidth
	\pdfpageheight
	\pdfhorigin
	\pdfvorigin

and these parameters are unknown to the LaTeX article package.

When you install the TeX i-Package and choose the default paper size, 
the appropriate settings are written to  
/Library/teTeX/share/texmf.local/tex/generic/config/pdftexconfig.tex. 
For example, with A4 the default paper size, this file contains:

	\pdfpagewidth=594.99 true bp
	\pdfpageheight=841.99 true bp
	\pdfhorigin=1 true in
	\pdfvorigin=1 true in

which corresponds to portrait mode.

To solve this you may either set these parameters yourself in the 
preamble of your LaTeX document, with something like:

	\newlength{\defpdfpagewidth}
	\newlength{\defpdfpageheight}
	\let\defpdfpagewidth\pdfpagewidth
	\let\defpdfpageheight\pdfpageheight
	\setlength{\pdfpagewidth}{\defpdfpageheight}
	\setlength{\pdfpageheight}{\defpdfpagewidth}

or call packages, like graphics or geometry, which do the work for you 
(even if you're not actually using any functionality of these packages 
directly).

I seem to remember that, at some point in the history of TeXShop, this 
step became unnecessary and then necessary again. Whether this was due 
to internal changes inside TeXShop or to changes in pdfTeX itself 
(especially when moving from the TL2003 setup to the TL2004 one) is 
unclear to me.

Hope this helps,

Bruno Voisin
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