[Tex/LaTex] Undefined control sequence in algorithm package

algorithm2eUbuntu

I am using Ubuntu 11.04 with TeXmaker and TeX Live. There is a \newenvironment definition in my LaTeX file:

\newenvironment{algo}[1]{%
  \begin{algorithm}[#1]
    \SetTitleSty{textsc}{normalsize}
    \SetInd{0.25em}{0.25em}
    \SetAlgoVlined
    \SetNlSty{normal}{}{}
    \DontPrintSemicolon
    \SetKwComment{tcp}{}{}
    \small
  }{%
    \vspace{-0.5ex}
  \end{algorithm}
}

And the use is something like

\begin{algo}{t}
...
\end{algo}

which gives an error:

! Undefined control sequence.
\algo ... \SetInd {0.25em}{0.25em} \SetAlgoVlined 
                                                  \SetNlSty {normal}{}{} \Do...

The file compiles well on Windows 7 + MikTeX.

Anybody else facing similar problems on Ubuntu?

Best Answer

You might have an old version of the algorithm2e package -- I know mine's from the ubuntu repos texlive distro, and I have to use \dontprintsemicolon instead of the capitalized version.

You can either find out whether there are old analogues for the commands you're trying to use, update the algorithm2e package on your local tex distribution, or provide a copy of the latest algorithm2e.sty in the directory where it's being compiled.

Edit: in case you do have an old version (which you probably do, with the texlive from ubuntu repos), here's the corresponding commands:

\SetAlgoVlined is \SetVline
As mentioned, \DontPrintSemicolon is \dontprintsemicolon

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[Tex/LaTex] Error: \Undefined control sequence \setmainfont in Ubuntu 12.04

The initial version of the question was misleading as it identified that there was an undefined command error but did not show which command was undefined. The error is

! Undefined control sequence.
\zf@set@font@type ...onttype \zf@basefont \zf@tfm 
                                                  \or \zf@atsuitrue \ifnum \...
l.5 \setmainfont{Code2000}

So the undefined command is \zf@tfm.

However this error is essentially a spurious internal failure caused by not stopping at the first error. (TeX's recovery actions when you scroll past an error are often not particularly useful and just lead to lots of spurious errors).

The first error reported is

! Font \zf@basefont=Code2000 at 10.0pt not loadable: Metric (TFM) file or insta
lled font not found.
\zf@fontspec ...ntname \zf@suffix " at \f@size pt 
                                                  \unless \ifzf@icu \zf@set@...
l.5 \setmainfont{Code2000}

which means that it can not find the Code2000 font either because it is not installed where Tex expects, or not installed at all.

[Tex/LaTex] \Fn ! Undefined control sequence

You can find the required definition of \Fn in the algorithm2e documentation code. It's defined using \SetKwProg.

The generic algorithm is prefixed with the following definitions:

\SetKwProg{Fn}{Function}{}{end}\SetKwFunction{FRecurs}{FnRecursive}%
\newcommand{\forcond}{$i=0$ \KwTo $n$}

enter image description here

\documentclass{article}

\usepackage{algorithm2e}
\newcommand{\forcond}{$i=0$ \KwTo $n$}
\SetKwProg{Fn}{Function}{}{end}\SetKwFunction{FRecurs}{FnRecursive}%
\SetAlgoLongEnd

\begin{document}

\begin{algorithm}
  \Fn(\tcc*[h]{algorithm as a recursive function}){\FRecurs{some args}}{
    \KwData{Some input data\\these inputs can be displayed on several lines and one 
      input can be wider than line's width.}
    \KwResult{Same for output data}
    \tcc{this is a comment to tell you that we will now really start code}
    \If(\tcc*[h]{a simple if but with a comment on the same line}){this is true}{
      we do that, else nothing\;
      \tcc{we will include other if so you can see this is possible}
      \eIf{we agree that}{
        we do that\;
      }{
        else we will do a more complicated if using else if\;
        \uIf{this first condition is true}{
          we do that\;
        }
        \uElseIf{this other condition is true}{
          this is done\tcc*[r]{else if}
        }
        \Else{
          in other case, we do this\tcc*[r]{else}
        }
      }
    }
    \tcc{now loops}
    \For{\forcond}{
      a for loop\;
    }
    \While{$i<n$}{
      a while loop including a repeat--until loop\;
      \Repeat{this end condition}{
        do this things\;
      }
    }
    They are many other possibilities and customization possible that you have to
    discover by reading the documentation.
  }
\end{algorithm}

\end{document}

For other parts of the documentation, it redefined \Fn to display something else (depending on the output requirements).

Best Answer

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[Tex/LaTex] Error: \Undefined control sequence \setmainfont in Ubuntu 12.04

[Tex/LaTex] \Fn ! Undefined control sequence

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