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I am trying to place a text box next to an equation like this:

enter image description here

I have tried defining two columns of different width with the vwcol environment, and then putting the text inside a framed environment. This is the result:

enter image description here

However, there are two things that I would like to fix:

  • the framed box spans to the right margin of the document
  • the equation and the text box are misaligned

How can I fix this items?

Also, I would like to know if using two columns is the right approach, or if there are better/more elegant approaches.

This is my minimal code:

\documentclass{article} \usepackage[ a4paper, top=2truecm, bottom=2truecm, left=2truecm, right=2truecm ]{geometry} \usepackage{amsmath} \usepackage{vwcol} \usepackage{framed} \begin{document} \begin{vwcol}[widths={0.65,0.35},sep=0.5cm,rule=0pt,indent=0em] \begin{equation*} \begin{bmatrix} \Delta\dot{\alpha}(t) \\ \Delta\dot{q}(t) \\ \Delta\dot{\theta}(t) \\ \Delta\dot{h}(t) \\ \end{bmatrix} = \begin{bmatrix} -1.397 & 1 & 0 & 0 \\ -5.47 & -3.27 & 0 & 0 \\ 0 & 1 & 0 & 0 \\ -400 & 0 & 400 & 0 \\ \end{bmatrix} \begin{bmatrix} \Delta\alpha(t) \\ \Delta q(t) \\ \Delta\theta(t) \\ \Delta h(t) \\ \end{bmatrix} + \begin{bmatrix} -0.124 \\ -13.2 \\ 0 \\ 0 \\ \end{bmatrix} \Delta\delta_{e}(t) \end{equation*} \begin{framed} US units are used here, so the angles/angular velocities will be in [rad] or [rad/s], and h in [ft]. \end{framed} \end{vwcol} \end{document}
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3 Answers 3

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4

I would probably use either minipages or not an equation but simple math and a box beside:

\documentclass{article} \usepackage[ a4paper, top=2truecm, bottom=2truecm, left=2truecm, right=2truecm ]{geometry} \usepackage{amsmath} \usepackage{tcolorbox} \begin{document} $ \begin{bmatrix} \Delta\dot{\alpha}(t) \\ \Delta\dot{q}(t) \\ \Delta\dot{\theta}(t) \\ \Delta\dot{h}(t) \\ \end{bmatrix} = \begin{bmatrix} -1.397 & 1 & 0 & 0 \\ -5.47 & -3.27 & 0 & 0 \\ 0 & 1 & 0 & 0 \\ -400 & 0 & 400 & 0 \\ \end{bmatrix} \begin{bmatrix} \Delta\alpha(t) \\ \Delta q(t) \\ \Delta\theta(t) \\ \Delta h(t) \\ \end{bmatrix} + \begin{bmatrix} -0.124 \\ -13.2 \\ 0 \\ 0 \\ \end{bmatrix} \Delta\delta_{e}(t) $\hfill \begin{tcolorbox}[width=0.3\textwidth,nobeforeafter,box align=center] US units are used here, so the angles/angular velocities will be in [rad] or [rad/s], and h in [ft]. \end{tcolorbox} \end{document}

enter image description here

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  • Your solution was the simplest since I only needed to display the equation without making any cross-reference to it, so the equation environment was unnecessary. In order to get the desired style for the text box, I passed the options [boxrule=0.1mm, width=0.35\textwidth, colback=white, colframe=black, arc=0pt, nobeforeafter, box align=center] to tcolorbox. Commented Jan 28, 2018 at 15:39
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You can use a \parbox inside \fbox in the equation:

\documentclass{article} \usepackage[ a4paper, top=2truecm, bottom=2truecm, left=2truecm, right=2truecm ]{geometry} \usepackage{amsmath} \begin{document} \begin{equation*} \begin{bmatrix} \Delta\dot{\alpha}(t) \\ \Delta\dot{q}(t) \\ \Delta\dot{\theta}(t) \\ \Delta\dot{h}(t) \\ \end{bmatrix} = \begin{bmatrix} -1.397 & 1 & 0 & 0 \\ -5.47 & -3.27 & 0 & 0 \\ 0 & 1 & 0 & 0 \\ -400 & 0 & 400 & 0 \\ \end{bmatrix} \begin{bmatrix} \Delta\alpha(t) \\ \Delta q(t) \\ \Delta\theta(t) \\ \Delta h(t) \\ \end{bmatrix} + \begin{bmatrix} -0.124 \\ -13.2 \\ 0 \\ 0 \\ \end{bmatrix} \Delta\delta_{e}(t) \qquad \fbox{% \parbox{.3\textwidth}{% US units are used here, so the angles/angular velocities will be in [rad] or [rad/s], and h in [ft]. }% } \end{equation*} \end{document}

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A simple \fbox and an align* environment will do the trick:

\documentclass{article} \usepackage[ a4paper, margin=2truecm ]{geometry} \usepackage{amsmath} \begin{document} \begin{align*} \begin{bmatrix} \Delta\dot{\alpha}(t) \\ \Delta\dot{q}(t) \\ \Delta\dot{\theta}(t) \\ \Delta\dot{h}(t) \\ \end{bmatrix} & = \begin{bmatrix} -1.397 & 1 & 0 & 0 \\ -5.47 & -3.27 & 0 & 0 \\ 0 & 1 & 0 & 0 \\ -400 & 0 & 400 & 0 \\ \end{bmatrix} \begin{bmatrix} \Delta\alpha(t) \\ \Delta q(t) \\ \Delta\theta(t) \\ \Delta h(t) \\ \end{bmatrix} + \begin{bmatrix} -0.124 \\ -13.2 \\ 0 \\ 0 \\ \end{bmatrix} \Delta\delta_{e}(t) & & \fboxsep = 6pt\fbox{\parbox{45mm}{\small US units are used here, so the angles/angular velocities will be in [rad] or [rad/s], and h in [ft].}} \end{align*} \end{document}

enter image description here

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  • this is really just a one-line display, so \[ ... \] or the equation* environment would be better. Commented Dec 16, 2017 at 3:57
  • @barbarabeeton: That's right.The only reason I used align* was to have a consistent, standard spacing between the equation and the text block. Also, I'm not sure the O.P. posted the full real equation (there might be several lines like this one). Commented Dec 16, 2017 at 9:47

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