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please consider the following example:

\documentclass{beamer}
\usepackage{tikz}
\begin{document}
   \begin{frame}
      \begin{tikzpicture}[remember picture,overlay]
         \only<1>{
                \node at(current page.center){test};
            }
            \only<2>{
                \node [anchor=north]at(current page.north){test};
            }
      \end{tikzpicture}
   \end{frame}

\end{document}

It produces two slides: the first with the centered text and the second with the same text in the northern part of the frame.

I'd like to know if there is some technique to obtain a "moving text" effect: an animation that graciously moves the text north until it reaches the second slide position.

edit: I just discovered the animate package that seems to be able to do what I want. But the examples in the manual involve very complicated figures while I need to move just tikz nodes (with text inside mostly). Is there anybody who'd like to show me how to animate my code?

disclaimer: I know animation are considered bad practice but this is a very special use case.

share|improve this question
    
You could combine tikz and foreach and make the slides change automatically. Drawback: if you want to go back to a previous slide, you have to use hyperlinks (or click on "previous slide" many times...). –  anderstood Aug 6 at 20:45
    
Welcome to TeX.SX! –  Christian Hupfer Aug 6 at 20:50
    
Yes, but that technique also adds clapping noise and a paperclip assistant. –  percusse Aug 6 at 20:51
    
Paperclip assistant? Is because of Windows? Never had that. And it can probably be removed. –  anderstood Aug 6 at 20:54

2 Answers 2

up vote 5 down vote accepted

Similar to Herbert answer but with TikZ:

\documentclass{beamer}
\usepackage{tikz}
\usepackage{animate}
\setbeamersize{text margin left=0cm,text margin right=0cm}             % removing text margins so that all the frame space will be available
\beamertemplatenavigationsymbolsempty

\begin{document}

\begin{frame}
\begin{animateinline}[
    begin={\begin{tikzpicture}
        \useasboundingbox (0,0) rectangle (\textwidth,\textheight);},  % this defines the space where the tikz content will be placed (and moved around)
    end=\end{tikzpicture}]{25}                                         % 25 is the animation speed
    \multiframe{40}{rA=5+0.1}{                                         % this is where the animation is defined as \rA
        \node at(.5\textwidth,\rA) {test};        
    }%
\end{animateinline}
\end{frame}

\end{document}

you can compile with pdflatex but of course you still need acrobat reader to properly see the animation.

share|improve this answer
    
I'm switching accepted answer because I' using TikZ and not PSTricks –  Vishesh Oct 15 at 12:07
\documentclass{beamer}
\usepackage{multido}
\begin{document}
\begin{frame}[t]
\begin{center}
\only<1->{test}

\multido{\iA=40+-1}{40}{\only<+>{\rule{0pt}{\iA ex}test}}
\end{center}
\end{frame}

\end{document}

An animation with package animate. Run it with xelatex or latex->dvips->ps2pdf:

\documentclass{beamer}
\usepackage{pstricks}
\usepackage{animate}
\begin{document}

\begin{frame}[t]
\begin{center}
\begin{animateinline}[controls, palindrome,begin={\begin{pspicture}(0,-1ex)(\linewidth,8cm)},end=\end{pspicture}]{10}%
\multiframe{76}{rA=0.0+0.1}{\rput(0.5\linewidth,7.5){test}\rput(0.5\linewidth,\rA){test}}%
\end{animateinline}
\end{center}
\end{frame}

\end{document}

enter image description here

The PDF is here. View it with the Adobe Reader in fullscreen mode.

share|improve this answer
    
this is very cool but I'd prefer a solution where I can click somewhere and the animation is performed. Like a "real" animation :) –  Vishesh Aug 6 at 21:22
    
@Vishesh: Add a hyperref \PushButton, which starts the animation? –  Christian Hupfer Aug 6 at 21:30
    
That is simple with package animate –  Herbert Aug 6 at 21:31
1  
@Herbert can you show how to do it with the package animate? –  Vishesh Aug 6 at 21:42
1  
see my extended anwer –  Herbert Aug 7 at 8:55

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