[Tex/LaTex] Units, in brackets, right aligned in align environment

alignunits

I need to supply the unit of the formulas I use, in square brackets, right aligned. I use the align environment. I have tried several things, like manually changing the style of the equation numbering to include the units, but I need to be able to toggle the units.

Any ideas on how to do this? Example of how I would like this feature to work:

\begin{align}
 \CL(s) &= \frac{\OL(s)}{1 + \OL(s)}
    \unit{kg}
\end{align}

Best Answer

Remarks

You didn't provide \CL nor \OL, so I defined my own. You can use && to skip to a new column in align.

Implementation

\documentclass{article}
\pagestyle{empty} %for cropping
\usepackage{amsmath,units}
\newcommand{\CL}{CL} % You didn't provide \CL
\newcommand{\OL}{OL} % You didn't provide \OL
\begin{document}
\begin{align}
    \CL(s) &= \frac{\OL(s)}{1 + \OL(s)} && [\CL] = \unit{kg}
\end{align}
\end{document}

Output

Related Solutions

[Tex/LaTex] How to set units in pgfplots without square brackets

You have the possibility to alter the way it looks. The units library is not fully implemented, and will probably never fully be. Attaching units can be a rather integrate matter.

However you can accomplish your request by:

\begin{tikzpicture}
  \begin{axis}[change x base,
    x SI prefix=kilo,x unit=m,
    y SI prefix=milli,y unit=N,
    unit markings=slash space,
    % Or do it by your self...
    % unit marking pre={\text{in }}, % requires amsmath
    % unit marking post={},
    xlabel=Distance,ylabel=Force]
    \addplot coordinates {
        (1000,1)
        (2000,1.1)
        (3000,1.2)
        (4000,1.3)
    };
  \end{axis}
\end{tikzpicture}

which produces (both examples shown):

enter image description here

EDIT: per the comments I have added a better way to make what the op would like. It can be accommodated by:

unit marking pre={\!\!/},
unit marking post={},
ylabel=$F$

where the negative space \!\! should gobble one \space (I can never remember if this is exactly so or not, please fill in the gaps if you know the exact negative space to insert).
This should produce what the OP is asking for.

[Tex/LaTex] Align – invisible equals sign

The use of & is not restricted to the equality symbol. You can align prepending & to any character to serve as alignment point:

\documentclass{article}
\usepackage{amsmath}

\begin{document}

No alignment:
\begin{gather}
bci-ax+i > n\\
\sin(\theta_B) \rightarrow 9x
\end{gather}

Alignment at \verb+>+ and \verb+\rightarrow+:
\begin{align}
bci-ax+i &> n\\
\sin(\theta_B) &\rightarrow 9x
\end{align}

\end{document}