How to use already defined co-ordinates inside pgfplot?

Question

The following is what I have currently.

\newcommand\medlsquare[4]
{    
    \addplot[thick] coordinates { (#1, #2) (#1+#3, #2) (#1+#3, #2+#3) (#1, #2+#3) (#1, #2)
};

I want to reuse the co-ordinates like below

\newcommand\medlsquare[4]
{
\coordinate (#4A) at (#1, #2);
\coordinate (#4B) at (#1++3, #2);
\coordinate (#4C) at (#1+#3, #2+#3);
\coordinate (#4D) at (#1, #2+#3);

// what is the option do do something like below?
 \addplot[thick] coordinates {/#4A, /#4B, /#4C, /#4D};

};

tikz pgf - pgfplot addplot with predefined coordinates - TeX - LaTeX Stack Exchange answers are ugly though. — user202729, Apr 21 '22 at 17:41

score 2 · Accepted Answer · answered Apr 21 '22 at 18:42

Instead of \addplot you can use \draw plot:

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\newcommand{\medlsquare}[4]{%

    \coordinate (#4A) at (#1, #2);
    \coordinate (#4B) at (#1+#3, #2);
    \coordinate (#4C) at (#1+#3, #2+#3);
    \coordinate (#4D) at (#1, #2+#3);
    \draw plot[thick] coordinates {(#4A) (#4B) (#4C) (#4D) (#4A)};
}
\begin{document}
\begin{tikzpicture}
    \begin{axis}[xmin=0,xmax=3,ymin=0,ymax=3]
        \medlsquare{1}{1}{1}{square}
    \end{axis}
\draw[red] (squareA) -- (squareC); % created coordinates are still accessible

\end{tikzpicture}
\end{document}

How to use already defined co-ordinates inside pgfplot?

1 Answers1