[Tex/LaTex] Creating two columns in beamer

Question

I have searched the stackexchange for a resolution of this problem, but I am still getting an error message when I put in the following (for now neglecting other things in my document, such as documentclass, begin{document}, etc.):

\begin{frame}
\frametitle{explanation}
\begin{columns}
\begin{column}{width=0.5\textwidth}
   some text here
\end{column}
\begin{column}
    \begin{center}
     \includegraphics[width=0.5\textwidth]{image1.jpg}      
     \end{center}
\end{column}
\end{columns}
\end{frame}

When compiled, I get the error: Missing number, treated as zero. I should appreciate any help.

Answer 1

You forgot to give the mandatory width to the second column, and you included an unnecessary width= in the width for the first column.

\documentclass[demo]{beamer}
\begin{document}
  \begin{frame}
\frametitle{explanation}
\begin{columns}
\begin{column}{0.5\textwidth}
   some text here some text here some text here some text here some text here
\end{column}
\begin{column}{0.5\textwidth}  %%<--- here
    \begin{center}
     \includegraphics[width=0.5\textwidth]{image1.jpg}
     \end{center}
\end{column}
\end{columns}
\end{frame}
\end{document}