Graphics, Figures & Tables ⇒ Horizontal Line in tabbed Environment

[teotjunk]

This is my code.

Code: Select all

\begin{tabbing}
\hline
\textbf{Alg}\=\textbf{orithm 1} Sampling from PG (1,z)\+\\

This is the error message I get.

Code: Select all

Misplaced \noalign \hline
Misplaced \noalign \hline
You can't use `\hrule' here except with leaders \hline
Missing number, treated as zero \hline
Illegal unit of measure (pt inserted) \hline

[Johannes_B]

Please post a compilable working minimal example. This way it's easier for us to help you. Your case is like showing the mechanic the doorhandle of your car, asking him why the car won't drive. Please follow the link and help us to help you.

[svend_tveskaeg]

Furthermore, just above the editing window (see attached screenshot), there are several bottons to help editing the post.

For example, when you have code, highlight it by pressing the "Code" botton.

[teotjunk]

Code: Select all

\documentclass[12pt]{report}

%\usepackage

\begin{document}


\begin{tabbing}\\
\hline
\textbf{Alg}\=\textbf{orithm 1} Sampling from PG (1,z)\+\\
  \textbf{Input}: $z$ a positive real number\\
\end{tabbing}
\end{document}

[cgnieder]

\hline is not meant for use in the {tabbing} environment. Internally it uses \noalign which cannot be used here and which is why you get the error. You could instead use a standard \rule:

Code: Select all

\documentclass[12pt]{report}

\begin{document}

\begin{tabbing}
\rule{\linewidth}{\arrayrulewidth}\\
\textbf{Alg}\=\textbf{orithm 1} Sampling from $PG(1,z)$ \+ \\
  \textbf{Input}: $z$ a positive real number\\
\end{tabbing}

\end{document}

You could also define a custom command \tabrule for this, maybe with an optional argument for the width:

Code: Select all

\documentclass{article}

\newcommand*\tabrule[1][]{%
  \if\relax\detokenize{#1}\relax
    \rule{\linewidth}{\arrayrulewidth}%
  \else
    \rule{#1}{\arrayrulewidth}%
  \fi
}

\begin{document}

\begin{tabbing}
 \tabrule\\
 \textbf{Alg}\=\textbf{orithm 1} Sampling from $PG(1,z)$ \+ \\
   \textbf{Input}: $z$ a positive real number\\
\end{tabbing}

\end{document}

tabbing.png (7 KiB) Viewed 13668 times

Regards