11

I found this answer and I applied it but this is the result.

enter image description here

This is my code.

\documentclass[conference]{IEEEtran}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{dsfont}
\usepackage{algorithm}
\PassOptionsToPackage{noend}{algpseudocode}% comment out if want end's to show
\usepackage{algpseudocode}

\makeatletter
% start with some helper code
% This is the vertical rule that is inserted
\newcommand*{\algrule}[1][\algorithmicindent]{\makebox[#1][l]{\hspace*{.5em}\vrule height .75\baselineskip depth .25\baselineskip}}%

\newcount\ALG@printindent@tempcnta
\def\ALG@printindent{%
    \ifnum \theALG@nested>0% is there anything to print
    \ifx\ALG@text\ALG@x@notext% is this an end group without any text?
    % do nothing
    \addvspace{-3pt}% FUDGE for cases where no text is shown, to make the rules line up
    \else
    \unskip
    % draw a rule for each indent level
    \ALG@printindent@tempcnta=1
    \loop
    \algrule[\csname ALG@ind@\the\ALG@printindent@tempcnta\endcsname]%
    \advance \ALG@printindent@tempcnta 1
    \ifnum \ALG@printindent@tempcnta<\numexpr\theALG@nested+1\relax% can't do <=, so add one to RHS and use < instead
    \repeat
    \fi
    \fi
}%
\usepackage{etoolbox}
% the following line injects our new indent handling code in place of the default spacing
\patchcmd{\ALG@doentity}{\noindent\hskip\ALG@tlm}{\ALG@printindent}{}{\errmessage{failed to patch}}
\makeatother
% end vertical rule patch for algorithmicx
\makeatother


\begin{document}

\IEEEpeerreviewmaketitle

    \begin{algorithm}
        \caption{Arbitrary Algorithm}\label{IS2OSLS}
        \begin{algorithmic}[1]
            \Require A matrix $\mathbf{A}$ of size $m\times n$.
            \Ensure Something.
            \For{$i$ in $m$}
                \For{$j$ in $n$}
                    \If{$i=j$}
                        \State Select a random action
                    \Else
                        \If{$i=j+1$}
                            \State Stay silent 
                        \Else 
                            \State Break
                        \EndIf
                    \EndIf
                \EndFor
            \EndFor
        \end{algorithmic}
    \end{algorithm}
\end{document}

I wold like to have vertical lines that start just after the first letter of the keyword, i.e., for the keyword for the vertical line should start after f, etc. In the figure above, the vertical lines start after the o not the f. Also I need the pseudo code without the end keyword as shown.

Thank you.

EDIT

I can change \hspace*{.5em} to \hspace*{.1em} in order to move the vertical line a little to the left. This is solved. But why do the lines overlaps at the end of the algorithm? (If I add the end keywords the problem is solved.)

Improve this question

2 Answers 2

Reset to default
12

An \addvspace instruction that is the cause for overlapping; remove it. I also added another patch that avoids spurious vertical space when an “end” tag is omitted, see Spurious whitespace with algpseudocode and noend

For moving left the rules, act on the \hspace{.5em}, as you discovered; in the example I used .2em.

In the following code I left only the necessary packages.

\documentclass[conference]{IEEEtran}

\usepackage{algorithm}
\usepackage[noend]{algpseudocode}
\usepackage{etoolbox}

\makeatletter
% start with some helper code
% This is the vertical rule that is inserted
\newcommand*{\algrule}[1][\algorithmicindent]{%
  \makebox[#1][l]{%
    \hspace*{.2em}% <------------- This is where the rule starts from
    \vrule height .75\baselineskip depth .25\baselineskip
  }
}

\newcount\ALG@printindent@tempcnta
\def\ALG@printindent{%
    \ifnum \theALG@nested>0% is there anything to print
    \ifx\ALG@text\ALG@x@notext% is this an end group without any text?
    % do nothing
    \else
    \unskip
    % draw a rule for each indent level
    \ALG@printindent@tempcnta=1
    \loop
    \algrule[\csname ALG@ind@\the\ALG@printindent@tempcnta\endcsname]%
    \advance \ALG@printindent@tempcnta 1
    \ifnum \ALG@printindent@tempcnta<\numexpr\theALG@nested+1\relax
    \repeat
    \fi
    \fi
}
% the following line injects our new indent handling code in place of the default spacing
\patchcmd{\ALG@doentity}{\noindent\hskip\ALG@tlm}{\ALG@printindent}{}{\errmessage{failed to patch}}
\patchcmd{\ALG@doentity}{\item[]\nointerlineskip}{}{}{} % no spurious vertical space
% end vertical rule patch for algorithmicx
\makeatother

\begin{document}

\IEEEpeerreviewmaketitle

\begin{algorithm}
\caption{Arbitrary Algorithm}\label{IS2OSLS}

\begin{algorithmic}[1]
  \Require A matrix $\mathbf{A}$ of size $m\times n$.
  \Ensure Something.
  \For{$i$ in $m$}
    \For{$j$ in $n$}
      \If{$i=j$}
        \State Select a random action
      \Else
        \If{$i=j+1$}
          \State Stay silent 
        \Else 
          \State Break
        \EndIf
      \EndIf
    \EndFor
  \EndFor
\end{algorithmic}

\end{algorithm}

\end{document}

enter image description here

Improve this answer
9
  • Thank you. Is there an easy way to change the color of the vertical lines (like, gray more transparent)? For example, this color #c2c2c2 Color Hex Gray76. Commented Feb 14, 2016 at 23:38
  • 1
    @Chiba Yes, of course: add \color{whatever} just before \vrule. Commented Feb 15, 2016 at 0:07
  • For some reason, the vertical rules are sometimes dashed like | | | (in vertical fashion). I mean there is a little space like every 1 cm. What would I get this? Commented Mar 29, 2016 at 19:26
  • @Chiba I suspect you're using setspace Commented Mar 29, 2016 at 19:28
  • 1
    @Chiba Sorry, but if I add that call to the code above, I get solid rules. Please, ask a new question with a minimal example showing the issue. Commented Mar 29, 2016 at 19:45
0

Nowadays, algpseudocodex is also a good alternative for such purposes. It has an option for indentation lines as indLines, which gives the desired output. This option is true by default.

\documentclass[conference]{IEEEtran}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage{amssymb}
\usepackage{dsfont}
\usepackage{algorithm}
\usepackage[noEnd]{algpseudocodex}

\begin{document}
\IEEEpeerreviewmaketitle
\begin{algorithm}
    \caption{Arbitrary Algorithm}\label{IS2OSLS}
    \begin{algorithmic}[1]
        \Require A matrix $\mathbf{A}$ of size $m\times n$.
        \Ensure Something.
        \For{$i$ in $m$}
            \For{$j$ in $n$}
                \If{$i=j$}
                    \State Select a random action
                \Else
                    \If{$i=j+1$}
                        \State Stay silent 
                    \Else 
                        \State Break
                    \EndIf
                \EndIf
            \EndFor
        \EndFor
    \end{algorithmic}
\end{algorithm}
\end{document}
Improve this answer

You must log in to answer this question.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.