Vertical alignment of subfigures LATEX

Question

I am working on my thesis and I am struggling with placing 2 images next to each other, so that the second image would be centered vertically along the first one. I was also trying to use subfigure instead of subfloat but neither of them works.

This is how it looks alt text http://img51.imageshack.us/img51/1174/screenshot20100224at712.png

and my code is:

\begin{figure}[H]
\centering  \subfloat[H][sparse($\mathbf{A}$)]{\includegraphics[width=0.28\textwidth]{sparsesmall} \label{sparse}}
    \subfloat[H][full($\mathbf{A}$)]{\includegraphics[width=0.55\textwidth]{fullsmall}\label{full}}
  \caption{Representation of $\mathbf{A}$ in MATLAB}
  \label{schematic}
\end{figure}

Any suggestions to make it look better than now? Thx

Answer 1

You can also use \raisebox{x}{\includegraphics[...]{...}} where x is negative to shift it downwards and positive to shift upwards.

Answer 2

Edit: it seems like subfig package has problems, particularly when working with hyperref. In that case, try subcaption package as mentioned in this answer.

If you use subfig package, you can do this easily. The solution is in section 5.4 of the manual:

\newsavebox{\tempbox}
\begin{figure}[H]
\sbox{\tempbox}{\includegraphics[width=0.28\textwidth]{sparsesmall}}
\subfloat[sparse($\mathbf{A}$)]{\usebox{\tempbox}\label{sparse}}%
\qquad
\subfloat[full($\mathbf{A}$)]{\vbox to \ht\tempbox{%
  \vfil
  \includegraphics[width=0.55\textwidth]{fullsmall}
  \vfil}\label{full}}%
  \caption{Representation of $\mathbf{A}$ in MATLAB}\label{schematic}
\end{figure}

I haven't tested it, and there may be typos, but it should work.

Answer 3

Another solution (which works with the subcaption package is

\begin{figure}[p]
        \centering
        \begin{subfigure}{.49\linewidth}
            \centering
            \caption{Large Picture}
            \includegraphics{LARGEPIC}
        \end{subfigure}
        \hfill
        \begin{subfigure}{.49\linewidth}
            \centering
            \caption{SMALL PIC}
            \includegraphics{small picture}
            \begin{minipage}{.1cm}
            \vfill
            \end{minipage}
        \end{subfigure} 
        \caption{Two pictures}
\end{figure}

The \vfill alone does not work, that's why it is put into the minipage

Answer 4

My method is using square minipage which centers its contents:

\begin{figure}
\subfloat[Figure a]{%
\begin{minipage}[c][1\width]{0.5\textwidth}%
\includegraphics[clip,width=1\textwidth]{figurea}%
\end{minipage}}\subfloat[Figure b]{\centering{}%
\begin{minipage}[c][1\width]{0.5\textwidth}%
\begin{center}
\includegraphics[clip,width=0.6\textwidth]{figureb}
\par\end{center}%
\end{minipage}}
\caption{main caption}
\end{figure}

This code was generated by LyX, however, so it's a bit ugly.