<h1>Why are some pages in the generated PDF file rotated?</h1> <p> Automatic page rotation depending on page content is an optional feature of the PostScript to PDF conversion. It is enabled by default. </p> <h1>How do I avoid page rotation?</h1> <p> Page rotation can be disabled with the following PostScript literal, which sets the <strong>AutoRotatePages</strong> parameter for the distillation process: </p> <pre> /setdistillerparams where {pop}{userdict /setdistillerparams {pop} put}ifelse &lt;&lt;/AutoRotatePages /None&gt;&gt; setdistillerparams </pre> <p> The above snippet can be directly inserted in the <code>%%Prolog</code> section of a PostScript figure or via a PostScript literal <code>\special{! ....}</code> in the preamble of the (La)TeX source (Note: there is a <code>"!"</code> after the opening parenthesis). </p> <p> <strong>Note:</strong> It appears that <code>emulateapj.cls</code> prevents <code>\special{! ...}</code> from being passed through to the PostScript, so if you use <code>emulateapj.cls</code> you have to insert the distiller settings directly into a .eps figure to take effect. </p> <p> Obviously this technique allows for customization of all other distiller parameters, too, see <a href="/help/faq/texprobs#distiller_params">distiller options</a>. </p>