[Tex/LaTex] TikZ animated Equation in Beamer

beamertikz-pgf

I'm trying to reproduce the example on creating a Presentation with LaTeX Beamer – Equations and tikz and the given code throws the following error

Package pgfkeys Error: I do not know the key '/tikz/na'.

The LaTex code is

\documentclass[compress]{beamer}
\usetheme{Warsaw}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes}

\tikzstyle{every picture}+=[remember picture]

\begin{document}

\begin{frame}
\frametitle{Test}


\begin{itemize}
\item Overall mean \tikz[na] \node[coordinate] (s1) {};
\end{itemize}

\tikzstyle{na} = [baseline=-.5ex]

\begin{equation}
y_{ijk} = \tikz[baseline]{ \node[fill=blue!20,anchor=base,rounded corners=2pt]
  (d1) {$\mu$}; }
+ \tikz[baseline]{ \node[fill=red!20,anchor=base,rounded corners=2pt]
  (d2) {$r_{i}$}; }
+ \tikz[baseline]{ \node[fill=green!20,anchor=base,rounded corners=2pt]
  (d3) {$c_{j}$}; }
+ \tikz[baseline]{ \node[fill=yellow!20,anchor=base,rounded corners=2pt]
  (d4) {$t_{k}$}; }
+ \epsilon_{ijk}
\end{equation}

\begin{itemize}
\item Effect of row $i$ \tikz[na] \node[coordinate] (s2) {};
\item Effect of column $j$ \tikz[na] \node[coordinate] (s3) {};
\item Effect of treatment $k$ \tikz[na] \node[coordinate] (s4) {};
\end{itemize}

\begin{tikzpicture}[overlay]
\path[->] (s1) edge [bend left] (d1);
\path[->] (s2) edge [bend right] (d2);
\path[->] (s3) edge [out=0, in=-90] (d3);
\path[->] (s4) edge [out=0, in=-90] (d4);
\end{tikzpicture}

\end{frame}

\end{document}

Also my equation is not animated. Any help to fix this error will be highly appreciated. Thanks

Best Answer

If you move the \tikzstyle{na} = [baseline=-.5ex] to be in the preamble, then it compiles:

enter image description here

Notes:

Animation:

  • Since you are using the beamer class, the \pause macro can be used to create the effect of animation across several slides:

    \begin{tikzpicture}[overlay]                  \pause
    \path[->] (s1) edge [bend left] (d1);     \pause
    \path[->] (s2) edge [bend right] (d2);    \pause
    \path[->] (s3) edge [out=0, in=-90] (d3); \pause
    \path[->] (s4) edge [out=0, in=-90] (d4); \pause
\end{tikzpicture}

With this change and two compiles, you should get an 6 page document that I think will do what you are looking for.

enter image description here

Code:

\documentclass[compress]{beamer}
\usetheme{Warsaw}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{arrows,shapes}

\tikzstyle{every picture}+=[remember picture]
\tikzstyle{na} = [baseline=-.5ex]

\begin{document}

\begin{frame}
\frametitle{Test}


\begin{itemize}
\item Overall mean \tikz[na] \node[coordinate] (s1) {};
\end{itemize}


\begin{equation}
y_{ijk} = \tikz[baseline]{ \node[fill=blue!20,anchor=base,rounded corners=2pt]
  (d1) {$\mu$}; }
+ \tikz[baseline]{ \node[fill=red!20,anchor=base,rounded corners=2pt]
  (d2) {$r_{i}$}; }
+ \tikz[baseline]{ \node[fill=green!20,anchor=base,rounded corners=2pt]
  (d3) {$c_{j}$}; }
+ \tikz[baseline]{ \node[fill=yellow!20,anchor=base,rounded corners=2pt]
  (d4) {$t_{k}$}; }
+ \epsilon_{ijk}
\end{equation}

\begin{itemize}
\item Effect of row $i$ \tikz[na] \node[coordinate] (s2) {};
\item Effect of column $j$ \tikz[na] \node[coordinate] (s3) {};
\item Effect of treatment $k$ \tikz[na] \node[coordinate] (s4) {};
\end{itemize}

\begin{tikzpicture}[overlay]
\path[->] (s1) edge [bend left] (d1);
\path[->] (s2) edge [bend right] (d2);
\path[->] (s3) edge [out=0, in=-90] (d3);
\path[->] (s4) edge [out=0, in=-90] (d4);
\end{tikzpicture}

\end{frame}

\end{document}
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