Please I need someone to help me address this problem.
I have three graphs that I created using excel and I have been able to save them as eps files. I've been able to use the \raisebox command to arrange the graphs in the order I want but adding the axis title has being a big problem for me. Please find attached a picture showing what I need to achieve. I have also included a working extract of my code.

\documentclass{article}
\usepackage{graphicx}
\usepackage{subfig}
\newsubfloat{figure}
\begin{document}
\begin{figure}[htb]
\centering
\raisebox{\dimexpr-.5\height-1em}{\includegraphics[scale=0.4]{Figures/knockho1.eps}}\ \subfloat[\label{label1}]{} \\[\topskip]
\raisebox{\dimexpr-.5\height-1em}{\includegraphics[scale=0.4]{Figures/knockho2.eps}}\ \subfloat[\label{label2}]{}
\caption{This is the text that describes \protect\subref{label1} and \protect\subref{label2}.}
\end{figure}
\end{document}


minipageshould not have any effect on the labels positions (except that they not need to fit into a narrower page). – Peter Grill Dec 20 '12 at 17:31