# Centering the tikzpicture elements

I have a lot of tikzpicture elements in my document. I want all the elements to be centered automatically without writing \begin{center}...\end{center}. I found a solution to make a figure center by the following code:

\documentclass{memoir}

\usepackage[draft]{graphicx}
\usepackage{tikz}
\usetikzlibrary{shapes.geometric}

% Solution 1 <--- Best for figures

% Solution 2 <--- does not work
% \makeatletter
% \makeatother

% % Solution 3 --- works
% \let\origfigure\figure
% \let\endorigfigure\endfigure
% \renewenvironment{figure}[1][tbph]{%
%     \origfigure[#1]%
%     \centering
% }{%
%     \endorigfigure
% }

\begin{document}

The first paragraph.

\begin{figure}
\includegraphics{a.jpg}
\caption[Long caption]{Caption}
\label{pic-a}
\end{figure}

And the second.

\begin{tikzpicture}
\node[rectangle,
draw = blue,
text = olive,
fill = gray!30,
minimum width = 5cm,
minimum height = 1cm] (r) at (0,0) {Rectangle};

\end{tikzpicture}

\begin{tikzpicture}

\node[isosceles triangle,
draw,
fill=cyan!30,
minimum size =3cm] (T) at (0,0) {};

\end{tikzpicture}

\end{document}


However, my tikzpicture elements are not effected. How can I do that (to set all the tikzpictures to be centered automatically without using \begin{center}...\end{center} each time?

• Looks like that there isn't any built in way, you can define your own environment that creates a centered tikzpicture. Dec 8 '21 at 16:28

It seems likely that you may not want every tikzpicture to be centered. One option is to create a new environment:

\documentclass{memoir}

\usepackage{tikz}

\newenvironment{centikz}{\begin{center}\begin{tikzpicture}}{\end{tikzpicture}\end{center}}

\begin{document}

An inline tikzpicture \begin{tikzpicture}\draw(0,0) node[fill, inner sep=3pt]{} to (1,0) node[fill, inner sep=3pt]{};\end{tikzpicture}
should not be centered, using either begin/end notation or \tikz{\draw(0,0) node[fill, inner sep=3pt]{} to (1,0) node[fill, inner sep=3pt]{};} shortened notation.
But sometimes \begin{centikz}\draw(0,0) node[fill, inner sep=3pt]{} to (1,0) node[fill, inner sep=3pt]{};\end{centikz}
you want it that way.

\end{document}


You can centre all tikzpicture environments using

\documentclass{memoir}
\usepackage{etoolbox}
\usepackage{tikz}
\BeforeBeginEnvironment{tikzpicture}{\begin{center}}
\AfterEndEnvironment{tikzpicture}{\end{center}}
\begin{document}
\begin{tikzpicture}
\node {Test};
\end{tikzpicture}
\end{document}


Here

\BeforeBeginEnvironment{environment}{code before}


and

\AfterEndEnivronment{environment}{code after}


prepend and append code before and code after to \begin{environment} and \end{environment}. See the etoolbox documentation for more details.

Note that if you are using memoir or a late enough version of LaTeX you may not need the etoolbox package for this to work.

• I am using memoir class. @Willoughby
– topu
Dec 8 '21 at 16:47
• Clever solution. I have to dig into the etoolbox package, it seems to be very useful. +1 Dec 8 '21 at 17:12
• @Willoughboy Nice, +1. You tickled my curiosity. Question to follow (for you?) with Beamer.
– JeT
Dec 8 '21 at 20:21
• @Willoughboy here it is
– JeT
Dec 8 '21 at 20:33