[Tex/LaTex] Print \frac{4}{3} m/s using the SI unit package

siunitx

How do I print \frac{4}{3} m/s using the siunitx package?

$\SI{\frac{4}{3}}{m/s}$ gives an error.

Best Answer

SIunitx can output fractions if you (1) tell it to do this, and (2) write down input as a/b:

\documentclass{minimal}
\usepackage{siunitx}
\begin{document}
\sisetup{quotient-mode=fraction} % Output a/b as \frac{a}{b}
\SI{3/4}{\meter/\second}
\end{document}

You can set the quotient mode on a case by case basis:

\SI[quotient-mode=fraction]{3/4}{\meter/\second}

or change the fraction macro:

\SI[quotient-mode=fraction, fraction-function=\dfrac]{3/4}{\meter/\second} 
% Need amsmath for \dfrac

Related Solutions

[Tex/LaTex] Add a percentage error using siunitx package

One could regard the percentage error as part of the unit and write:

\SI{145}{\milli\meter{} \pm{} 5\percent}

Sample output

This will not break across lines, unless you use the option allow-number-unit-breaks.

[Tex/LaTex] Prefix with no unit with siunitx

You can of course do it:

\documentclass{article}
\usepackage{siunitx}

\DeclareSIUnit{\nothing}{\relax}

\begin{document}
\SI{1.0}{\mega\nothing} is a wrong way to typeset data.
\end{document}

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However, you should think at least twice whether this is a good way to express yourself and your readers will understand what you mean. With

\num{1e6}

the printout would be much clearer and not so wider.

Best Answer

Related Solutions

[Tex/LaTex] Add a percentage error using siunitx package

[Tex/LaTex] Prefix with no unit with siunitx

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