# tikz in poster with form beamer

With the template http://www.latextemplates.com/template/jacobs-landscape-poster I want to make a diagram in introduction.

I used the package 'tikz-cd' so I add this package, but then I get a error because of \begin{frame}[t] \end{frame}.

For example, I want to draw a diagram

$\begin{tikzcd}[row sep=1.5em,column sep=0.5em, ] A \arrow[dd, bend right=120, "b"] \arrow[rrr,"f"]\arrow[d, "q"] &&& C \arrow[d, "U(1)"] \\ D \arrow[d, "" ]&&& E \\ F \arrow[rrr] &&& G \end{tikzcd}$

in the above template. Then the error says

'Undefined control sequence.
<argument> \pgf@matrix@last@nextcell@options
> l.352 \end{frame}
% End of the enclosing frame'

Then what should I do?

You have to add the option fragile to \begin{frame}[...] options, then you have only one error that you can fix deleting or moving to the next line the comment after \end{frame} %....

Seems amazing but it works.

Here's a minimal example:

\documentclass[final]{beamer}
\usepackage[scale=1.24]{beamerposter} % Use the beamerposter package for laying out the poster
\usepackage{tikz-cd}
\begin{document}
\begin{frame}[t,fragile] % The whole poster is enclosed in one beamer frame
\begin{block}{Introduction}
\begin{tikzcd}[row sep=1.5em,column sep=0.5em,]
A  \arrow[dd, bend right=120, "b"] \arrow[rrr,"f"]\arrow[d, "q"] &&& C \arrow[d, "U(1)"] \\
D \arrow[d, "" ]&&& E \\
F \arrow[rrr] &&&  G
\end{tikzcd}
\end{block}
\end{frame}
\end{document}
• Here it is. Maybe too long but this is the code. You have to download the images from the link in the answer. Dec 7, 2016 at 8:57
• Please roll back my edit if you don't like it. The code as is now works, and is perhaps enough to demonstrate the validity of your answer.\ Dec 7, 2016 at 9:13