How to vertically center included pdfs?

when I'm trying to fill a poster with multiple (landscape) slides, like this:

\documentclass[a0]{sciposter}

% Support for PDF inclusion
\usepackage[final]{pdfpages}

\begin{document}

\includepdf[pages=27-34,nup= 2x8,noautoscale,scale=2]{english.pdf}

\end{document}


the resulting 'figure' starts in the middle of the page going upwards outside of the page. How can I set it to be vertically centered?

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I agree with @ScottH that you can use offset. But you are trying to use only 8 pages from 27-34. But you are using a nup=2x8. That means you are trying to print 2 rows with 8 pages in each row. That is the mistake. It should be nup=2x4. Then you are in business again.

In addition to offset, you can use delta= delx dely to fine tune the page you are printing (Refer page 9, figure 1 of the pdfpages manual -- texdoc pdfpages from terminal). A little example:

\documentclass[a0]{sciposter}
%% Support for PDF inclusion
\usepackage[final]{pdfpages}
%
\begin{document}
%
\includepdf[pages=1-8,nup=2x4,landscape,offset=-2ex 5ex,delta=-10ex -10ex]{infthesis.pdf}
%
\end{document}


I used negative values in delta=-10ex -10ex as my pdf (infthesis) had a large margin. You may adjust it suitably for your file.

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