LyX ⇒ Side-by-side subfigures don't work for program listings

[jamshark70]

Here, I have followed the instructions in https://wiki.lyx.org/FAQ/FiguresSideBySide:

• Float
  
  • Subfigure (width 0.45\textwidth)
  • Horizontal fill
  • Subfigure (width 0.45\textwidth)

In the page screenshot, the top float places a program listing into the first subfigure and an image into the second, and the program listing's top boundary aligns with the image's bottom boundary.

The lower float has two images and those are horizontally aligned as I expected.

lyx-side-by-side-problem.png (22.84 KiB) Viewed 475 times

https://tex.stackexchange.com/questions ... -in-memoir says "The listings has full width so that will never work. You may need to wrap the listings in a minipage to control the width" but LyX is already wrapping it in a minipage (exported):

Code: Select all

\begin{figure}
\begin{minipage}[t]{0.45\textwidth}%
\begin{lstlisting}
... code here...
\end{lstlisting}
%
\end{minipage}\hfill{}%
\begin{minipage}[t]{0.45\textwidth}%
\includegraphics{../img/02-02-pd-phasor}%
\end{minipage}

I have to admit i really don't understand what is going on here. Why does a child element not obey its parent's bounds?

Unfortunately, in this document, I expect to have many pairs of code listings alongside images; lack of a solution would be a deal-breaker. So, how to fix this?

hjh

[Stefan Kottwitz]

\includegraphics sets the baseline to the bottom. The baseline of your listing, top, is aligned with the baseline of the image, the bottom. A quick fix is to insert \vspace{0pt} right before the \includegraphics command; this way, the reference point will be the top, and both subfigures will be top-aligned.

Stefan

[jamshark70]

\includegraphics sets the baseline to the bottom. The baseline of your listing, top, is aligned with the baseline of the image, the bottom.

Ohhh I see. I could never have guessed that, since both minipages are set to top alignment. That's counterintuitive, isn't it? A parent object, a minipage (top alignment), contains a child object, an \includegraphics with implicit bottom alignment -- I would really expect the child object not to be able to override the parent.

But your comment pointed me to another solution -- to set middle alignment. This looks even nicer on the page than top alignment.

(Still undecided whether I will continue with LyX or start writing LaTeX directly.)

hjh