tick typesetter fails with Illegal parameter number when used with beamer

Question

I'm trying to change the way ticks are display in tikz datavisualization (ideally with prefix unit), but for now I'm stuck as specifying a tick typesetter fails when used in a beamer document

\documentclass{beamer}

\usepackage{tikz}
\usetikzlibrary {datavisualization.formats.functions}
\begin{document}

\begin{frame}

\tikz \datavisualization [
  scientific axes,
  x axis={logarithmic},
  y axis={logarithmic,
          ticks={
             tick typesetter/.code={%
                  \pgfmathprintnumber[sci, retain unit mantissa=false]{##1}
                   }
                }
          },
  visualize as line
  ]
  data [format=function] {
    var x : interval [0.01:100]; func y = \value x * \value x;
  };
\end{frame}
\end{document}

Answer 1

Use a fragile frame:

\documentclass{beamer}

\usepackage{tikz}
\usetikzlibrary {datavisualization.formats.functions}
\begin{document}

\begin{frame}[fragile]

\tikz \datavisualization [
  scientific axes,
  x axis={logarithmic},
  y axis={logarithmic,
          ticks={
             tick typesetter/.code={%
                  \pgfmathprintnumber[sci, retain unit mantissa=false]{##1}
                   }
                }
          },
  visualize as line
  ]
  data [format=function] {
    var x : interval [0.01:100]; func y = \value x * \value x;
  };
\end{frame}
\end{document}