[Tex/LaTex] Style problem in algorithmic package

algorithmsbold

I'm using algorithmic package and I write algorithms. It seems OK but the operators, like IF, ELSE, FOR, ENDIF, etc., are not bold.

Is there anyone that has an idea?

Here is an example:

\begin{algorithm}
  \caption{Tournament algorithm}
  \label{alg:algoTournament}
\begin{boxedminipage}{155mm}
    \begin{algorithmic}[1]
    \STATE $fitness \leftarrow 0$
    \STATE $groupIndex \leftarrow -1$
    \FOR {$i \leftarrow 1$ to $tournamentSize$}
        \STATE Select a random group G1
        \IF {$G1$ in $selectedGroups$}
            \STATE Select another group for G1
        \ENDIF
        \IF {$fitness < fitnessOfSelectedGroup$}
            \STATE {$fitness=fitnessOfSelectedGroup$}
            \STATE {$groupIndex=indexOfSelectedGroup$}
        \ELSE 
            \STATE continue
        \ENDIF
        \STATE Add $G1$ to $selectedGroups$
    \ENDFOR
    \STATE return $groupIndex$
   \end{algorithmic}
\end{boxedminipage}
 \vskip17.5pt
\end{algorithm}

Best Answer

Use a font which provides a bold typeface
Check your log file for font warnings

This minimal example shows bold operators in your code:

\documentclass{article}
\usepackage[hmargin=3cm]{geometry}
\usepackage{algorithm}
\usepackage{algorithmic}
\usepackage{boxedminipage}
\begin{document}
\begin{algorithm}
  \caption{Tournament algorithm}
  \label{alg:algoTournament}
\begin{boxedminipage}{155mm}
    \begin{algorithmic}[1]
    \STATE $fitness \leftarrow 0$
    \STATE $groupIndex \leftarrow -1$
    \FOR {$i \leftarrow 1$ to $tournamentSize$}
        \STATE Select a random group G1
        \IF {$G1$ in $selectedGroups$}
            \STATE Select another group for G1
        \ENDIF
        \IF {$fitness < fitnessOfSelectedGroup$}
            \STATE {$fitness=fitnessOfSelectedGroup$}
            \STATE {$groupIndex=indexOfSelectedGroup$}
        \ELSE 
            \STATE continue
        \ENDIF
        \STATE Add $G1$ to $selectedGroups$
    \ENDFOR
    \STATE return $groupIndex$
   \end{algorithmic}
\end{boxedminipage}
 \vskip17.5pt
\end{algorithm}
\end{document}

enter image description here

Related Solutions

[Tex/LaTex] Customizing “Algorithmic” or generating output of the same style

The (redefinable) definitions of the algorithms package are listed on p. 13 of the documentation. Example:

\newcommand{\algorithmicrequire}{\textbf{Require:}}

If you want to change the effects of \REQUIRE to, say, Whatever: (typeset in italic), add the following to the preamble of your document:

\renewcommand{\algorithmicrequire}{\textit{Whatever:}}

[Tex/LaTex] new clause in algorithmic package

As Werner says in his comment, it is not advisable to modify the .sty files directly. You can include your definitions in the document preamble (after loading the required packages); since your commands use the @ character, you will need to use \makeatletter before the definitions and \makeatother after them.

However, I would suggest you to use the algorithmicx package instead; this package offers you many possibilities to customize the layout of algorithms and gives you an easy way to define a completely new layout for your specific needs. For example (algpseudocode internally loads algorithmicx):

\documentclass{article}
\usepackage{algpseudocode}

\algblockdefx{Sync}{EndSync}[1]{\textbf{sync} #1}{\textbf{end sync}}

\begin{document}

\begin{algorithmic}
\Require$n \geq 0$
\Ensure $y = x^n$
\State $y \leftarrow 1$
\While{$N \neq 0$}
\State $X \leftarrow X$
\EndWhile
\Sync{$N$ id odd}
\State $N \leftarrow n$
\EndSync
\end{algorithmic}

\end{document}

enter image description here

EDIT: if changing to algorithmicx is not an option at the present time, you can still make your definitions in the preamble of your document instead of modifying the .sty file directly; simply use \renewenvironment to redefine the algorithmic environment and include your new definitions:

\documentclass{article}
\usepackage{algorithmic}

\makeatletter
\newcommand{\algorithmicsync}{\textbf{sync}}
\newcommand{\algorithmicendsync}{\algorithmicend\ \algorithmicsync}
\renewenvironment{algorithmic}[1][0]{
\let\@item\ALC@item
  \newcommand{\ALC@lno}{%
\ifthenelse{\equal{\arabic{ALC@rem}}{0}}
{{\footnotesize \arabic{ALC@line}:}}{}%
}
\let\@listii\@listi
\let\@listiii\@listi
\let\@listiv\@listi
\let\@listv\@listi
\let\@listvi\@listi
\let\@listvii\@listi
  \newenvironment{ALC@g}{
    \begin{list}{\ALC@lno}{ \itemsep\z@ \itemindent\z@
    \listparindent\z@ \rightmargin\z@ 
    \topsep\z@ \partopsep\z@ \parskip\z@\parsep\z@
    \leftmargin 1em
    \addtolength{\ALC@tlm}{\leftmargin}
    }
  }
  {\end{list}}
  \newcommand{\ALC@it}{\addtocounter{ALC@line}{1}\addtocounter{ALC@rem}{1}\ifthenelse{\equal{\arabic{ALC@rem}}{#1}}{\setcounter{ALC@rem}{0}}{}\item}
  \newcommand{\ALC@com}[1]{\ifthenelse{\equal{##1}{default}}%
{}{\ \algorithmiccomment{##1}}}
  \newcommand{\REQUIRE}{\item[\algorithmicrequire]}
  \newcommand{\ENSURE}{\item[\algorithmicensure]}
  \newcommand{\STATE}{\ALC@it}
  \newcommand{\COMMENT}[1]{\algorithmiccomment{##1}}
  \newenvironment{ALC@if}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@for}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@whl}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@loop}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@rpt}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@syn}{\begin{ALC@g}}{\end{ALC@g}}% new
  \renewcommand{\\}{\@centercr}

  \newcommand{\IF}[2][default]{\ALC@it\algorithmicif\ ##2\ \algorithmicthen%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\ELSE}[1][default]{\end{ALC@if}\ALC@it\algorithmicelse%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\ELSIF}[2][default]%
{\end{ALC@if}\ALC@it\algorithmicelsif\ ##2\ \algorithmicthen%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\FOR}[2][default]{\ALC@it\algorithmicfor\ ##2\ \algorithmicdo%
\ALC@com{##1}\begin{ALC@for}}
  \newcommand{\FORALL}[2][default]{\ALC@it\algorithmicforall\ ##2\ %
\algorithmicdo%
\ALC@com{##1}\begin{ALC@for}}
  \newcommand{\WHILE}[2][default]{\ALC@it\algorithmicwhile\ ##2\ %
\algorithmicdo%
\ALC@com{##1}\begin{ALC@whl}}
  \newcommand{\LOOP}[1][default]{\ALC@it\algorithmicloop%
\ALC@com{##1}\begin{ALC@loop}}
  \newcommand{\REPEAT}[1][default]{\ALC@it\algorithmicrepeat%
\ALC@com{##1}\begin{ALC@rpt}}
  \newcommand{\UNTIL}[1]{\end{ALC@rpt}\ALC@it\algorithmicuntil\ ##1}
\newcommand{\SYNC}[2][default]{\ALC@it\algorithmicsync\ ##2\ % new
    \ALC@com{##1}\begin{ALC@syn}} %new
  \ifthenelse{\boolean{ALC@noend}}{
    \newcommand{\ENDIF}{\end{ALC@if}}
    \newcommand{\ENDFOR}{\end{ALC@for}}
    \newcommand{\ENDWHILE}{\end{ALC@whl}}
    \newcommand{\ENDLOOP}{\end{ALC@loop}}
    \newcommand{\ENDSYNC}{\end{ALC@syn}} % new
  }{
    \newcommand{\ENDIF}{\end{ALC@if}\ALC@it\algorithmicendif}
    \newcommand{\ENDFOR}{\end{ALC@for}\ALC@it\algorithmicendfor}
    \newcommand{\ENDWHILE}{\end{ALC@whl}\ALC@it\algorithmicendwhile}
    \newcommand{\ENDLOOP}{\end{ALC@loop}\ALC@it\algorithmicendloop}
    \newcommand{\ENDSYNC}{\end{ALC@syn}\ALC@it\algorithmicendsync}% new
  } 
  \renewcommand{\@toodeep}{}
  \begin{list}{\ALC@lno}{\setcounter{ALC@line}{0}\setcounter{ALC@rem}{0}%
    \itemsep\z@ \itemindent\z@ \listparindent\z@%
    \partopsep\z@ \parskip\z@ \parsep\z@%
    \labelsep 0.5em \topsep 0.2em%
\ifthenelse{\equal{#1}{0}}
  {\labelwidth 0.5em }
  {\labelwidth  1.2em }
\leftmargin\labelwidth \addtolength{\leftmargin}{\labelsep}
    \ALC@tlm\labelsep
  }
}
{\end{list}}
\makeatother

\begin{document}

\begin{algorithmic}
\REQUIRE $n \geq 0$
\ENSURE $y = x^n$
\STATE $y \leftarrow 1$
\WHILE{$N \neq 0$}
\STATE $X \leftarrow X$
\ENDWHILE
\SYNC{$N$ id odd}
\STATE $N \leftarrow n$
\ENDSYNC
\end{algorithmic}

\end{document}

If you don't want your preamble to look too crowded, you can put the code that goes between \makeatletter and \makeatother in a new document and save this new document as, for example, algorithmic-modified.sty in your current working directory (or in your local TDS tree). Now this file can be loaded in the standard way in the preamble of your document, after having loaded algorithmic (you'll have to be careful, since other users working with the document will also have to have access to this new file):

\documentclass{article}
\usepackage{algorithmic}
\usepackage{algorithmic-modified}

\begin{document}

\begin{algorithmic}
\REQUIRE $n \geq 0$
\ENSURE $y = x^n$
\STATE $y \leftarrow 1$
\WHILE{$N \neq 0$}
\STATE $X \leftarrow X$
\ENDWHILE
\SYNC{$N$ id odd}
\STATE $N \leftarrow n$
\ENDSYNC
\end{algorithmic}

\end{document}

And here's the contents of algorithmic-modified.sty:

% redefinition of the algorithmic environment
\newcommand{\algorithmicsync}{\textbf{sync}}
\newcommand{\algorithmicendsync}{\textbf{end sync}}
\renewenvironment{algorithmic}[1][0]{
\let\@item\ALC@item
  \newcommand{\ALC@lno}{%
\ifthenelse{\equal{\arabic{ALC@rem}}{0}}
{{\footnotesize \arabic{ALC@line}:}}{}%
}
\let\@listii\@listi
\let\@listiii\@listi
\let\@listiv\@listi
\let\@listv\@listi
\let\@listvi\@listi
\let\@listvii\@listi
  \newenvironment{ALC@g}{
    \begin{list}{\ALC@lno}{ \itemsep\z@ \itemindent\z@
    \listparindent\z@ \rightmargin\z@ 
    \topsep\z@ \partopsep\z@ \parskip\z@\parsep\z@
    \leftmargin 1em
    \addtolength{\ALC@tlm}{\leftmargin}
    }
  }
  {\end{list}}
  \newcommand{\ALC@it}{\addtocounter{ALC@line}{1}\addtocounter{ALC@rem}{1}\ifthenelse{\equal{\arabic{ALC@rem}}{#1}}{\setcounter{ALC@rem}{0}}{}\item}
  \newcommand{\ALC@com}[1]{\ifthenelse{\equal{##1}{default}}%
{}{\ \algorithmiccomment{##1}}}
  \newcommand{\REQUIRE}{\item[\algorithmicrequire]}
  \newcommand{\ENSURE}{\item[\algorithmicensure]}
  \newcommand{\STATE}{\ALC@it}
  \newcommand{\COMMENT}[1]{\algorithmiccomment{##1}}
  \newenvironment{ALC@if}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@for}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@whl}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@loop}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@rpt}{\begin{ALC@g}}{\end{ALC@g}}
  \newenvironment{ALC@syn}{\begin{ALC@g}}{\end{ALC@g}}% new
  \renewcommand{\\}{\@centercr}

  \newcommand{\IF}[2][default]{\ALC@it\algorithmicif\ ##2\ \algorithmicthen%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\ELSE}[1][default]{\end{ALC@if}\ALC@it\algorithmicelse%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\ELSIF}[2][default]%
{\end{ALC@if}\ALC@it\algorithmicelsif\ ##2\ \algorithmicthen%
\ALC@com{##1}\begin{ALC@if}}
  \newcommand{\FOR}[2][default]{\ALC@it\algorithmicfor\ ##2\ \algorithmicdo%
\ALC@com{##1}\begin{ALC@for}}
  \newcommand{\FORALL}[2][default]{\ALC@it\algorithmicforall\ ##2\ %
\algorithmicdo%
\ALC@com{##1}\begin{ALC@for}}
  \newcommand{\WHILE}[2][default]{\ALC@it\algorithmicwhile\ ##2\ %
\algorithmicdo%
\ALC@com{##1}\begin{ALC@whl}}
  \newcommand{\LOOP}[1][default]{\ALC@it\algorithmicloop%
\ALC@com{##1}\begin{ALC@loop}}
  \newcommand{\REPEAT}[1][default]{\ALC@it\algorithmicrepeat%
\ALC@com{##1}\begin{ALC@rpt}}
  \newcommand{\UNTIL}[1]{\end{ALC@rpt}\ALC@it\algorithmicuntil\ ##1}
\newcommand{\SYNC}[2][default]{\ALC@it\algorithmicsync\ ##2\ % new
    \ALC@com{##1}\begin{ALC@syn}} %new
  \ifthenelse{\boolean{ALC@noend}}{
    \newcommand{\ENDIF}{\end{ALC@if}}
    \newcommand{\ENDFOR}{\end{ALC@for}}
    \newcommand{\ENDWHILE}{\end{ALC@whl}}
    \newcommand{\ENDLOOP}{\end{ALC@loop}}
    \newcommand{\ENDSYNC}{\end{ALC@syn}} % new
  }{
    \newcommand{\ENDIF}{\end{ALC@if}\ALC@it\algorithmicendif}
    \newcommand{\ENDFOR}{\end{ALC@for}\ALC@it\algorithmicendfor}
    \newcommand{\ENDWHILE}{\end{ALC@whl}\ALC@it\algorithmicendwhile}
    \newcommand{\ENDLOOP}{\end{ALC@loop}\ALC@it\algorithmicendloop}
    \newcommand{\ENDSYNC}{\end{ALC@syn}\ALC@it\algorithmicendsync}% new
  } 
  \renewcommand{\@toodeep}{}
  \begin{list}{\ALC@lno}{\setcounter{ALC@line}{0}\setcounter{ALC@rem}{0}%
    \itemsep\z@ \itemindent\z@ \listparindent\z@%
    \partopsep\z@ \parskip\z@ \parsep\z@%
    \labelsep 0.5em \topsep 0.2em%
\ifthenelse{\equal{#1}{0}}
  {\labelwidth 0.5em }
  {\labelwidth  1.2em }
\leftmargin\labelwidth \addtolength{\leftmargin}{\labelsep}
    \ALC@tlm\labelsep
  }
}
{\end{list}}

Best Answer

Related Solutions

[Tex/LaTex] Customizing “Algorithmic” or generating output of the same style

[Tex/LaTex] new clause in algorithmic package

Related Question