% label-formats.tex — five built-in axis-label formats side by side.
%
% \numodelplotsetup{axis-label-format=...} switches between:
%   ieee       v (m/s)        (default)
%   iso        v / (m/s)      ISO 80000-1
%   brackets   v [m/s]        older physics convention
%   qty-only   v
%   unit-only  m/s

\documentclass{article}
\usepackage{siunitx}
\usepackage{numodel-plot}

\newcommand{\testplot}[1]{%
  \par\vspace{1em}\textbf{axis-label-format=#1}\par
  \numodelplotsetup{axis-label-format=#1}%
  \def\xmin{0}\def\xmax{10}%
  \def\ymin{0}\def\ymax{20}%
  \def\xlabelqty{t}\def\xlabelunit{\s}%
  \def\ylabelqty{v}\def\ylabelunit{\m\per\s}%
  \drawplot{\addplot[domain=0:10,thick]{2*x};}%
}

\begin{document}

\testplot{ieee}
\testplot{iso}
\testplot{brackets}
\testplot{qty-only}
\testplot{unit-only}

\end{document}
