I would like to place the institution logo at the bottom of the sidebar as wide as the whole sidebar.
I was wondering if there is a command that return the width of the sidebar, somthing similar to \textwidth.
Thanks in advance for your help
Update: Yes, I am using beamer. here is an example of my code:
\documentclass{beamer}
\usepackage[latin1]{inputenc}
\usetheme{Berkeley}
\usecolortheme{seahorse}
\title{Title}
\author{My name}
\institute{My institute}
\date{\today}
\addtobeamertemplate{sidebar left}{}{
\includegraphics[width = 0.15\textwidth]{logo}
}
\begin{document}
\begin{frame}[plain]
\titlepage
\end{frame}
\begin{frame}
Frame content
\end{frame}
\end{document}

\documentclass{...}and ending with\end{document}. I assume, that you usebeamer? – Sep 03 '14 at 13:05beamer), the lengths\PageLeftMargin+\hoffsetwill give a distance from the left side of the paper to the text body. – Steven B. Segletes Sep 03 '14 at 14:03