[Tex/LaTex] Error: extra alignment tab has been changed to \cr

errorstables

I am using the ACM SIG template and trying to create a table of 4 columns.

I get the error mentioned in the title of the question. I know the standard reasons why this error can occur.

But my question is: Is it possible that the template or .cls file is controlling the maximum number of columns in a table ? If it were, would I get a different error than this?

Best Answer

The error can be reproduced by

\documentclass{article}

\begin{document}

\begin{tabular}{c|c}
one & two & three \\
\hline
one & two 
\end{tabular}
\end{document}

The problem is caused by the extra column you try to insert. The tabular environment expects two columns but three is inserted.

Related Solutions

[Tex/LaTex] Extra alignment tab has been changed to \cr

If you need only a correction, here you are:

\documentclass{article}
\begin{document}

\begin{table}[ht!]
\begin{center}
    \begin{tabular}{p{0.6cm}p{0.6cm}p{2.3cm}p{1.4cm}p{2.3cm}p{1.45cm}}
        \hline
        \bf p & \bf N & \bf $\|u-u_{h}\|_{L^{2}(0,1)}$ & \bf $L^{2}$ Rate & \bf $\|u-u_{h}\|_{H^{1}(0,1)}$ & \bf $H^{1}$ Rate\\
        \hline
 %       1  & 2  & $1.1735 \times 10^{-2}$ & \centering -- & $2.3671 \times 10^{-2}$ & \centering --\\
       1  & 2  & $1.1735 \times 10^{-2}$ & \multicolumn{1}{c}{ --} & $2.3671 \times 10^{-2}$ & \multicolumn{1}{c}{ --}\\
        -- & 4  & $3.0549 \times 10^{-3}$ & 1.9416        & $1.1547 \times 10^{-2}$ & 1.0356\\
        -- & 8  & $7.4722 \times 10^{-4}$ & 2.0315        & $5.4262 \times 10^{-3}$ & 1.0895\\
        \hline
    \end{tabular}
\end{center}
\end{table}

\end{document}

[Tex/LaTex] table – error: Extra alignment tab has been changed to \cr

The code

\cline{2-12}

requests a horizontal rule to span from column 2 through to column 12. However, you only have a 4-column tabular since you've used

\begin{tabular}{lccc}

You're probably interested in using \cline{2-4}.

Best Answer

Related Solutions

[Tex/LaTex] Extra alignment tab has been changed to \cr

[Tex/LaTex] table – error: Extra alignment tab has been changed to \cr

Related Question