Graphics, Figures & Tables ⇒ Packages algorithm2e and algpseudocode incompatible?

[kynan]

I want to typeset pseudocode in a floating listing using the packages "algorithm2e" and "algpseudocode". The reason I can't use "algorithm" is that I (have to) use a documentclass based on "memoir", which is incompatible with "algorithm".

Now the problem is that that "algorithm2e" and "algpseudocode" seem to be incompatible. Take the following minimal example (note that the document class doesn't matter, I just used article so that I can switch back and forth between "algorithm" and "algorithm2e"; it works just fine with "algorithm"):

Code: Select all

\documentclass{article}
\usepackage{algorithm2e}
\usepackage{algpseudocode}
\begin{document}
\begin{algorithm}
\caption{Test algorithm}
\begin{algorithmic}[1]
\Procedure {Test}{}
  \For {$i = 1$ to $10$}
    \State print $i$
  \EndFor
\EndProcedure
\end{algorithmic}
\end{algorithm}
\end{document}

I get the following errors using pdflatex:

Code: Select all

! Missing \endcsname inserted.
<to be read again> 
                   \ALG@currentblock@2 
l.11   \EndFor
              
? 
! Extra \endcsname.
\ALG@makenobeginrepeat ...LG@thisblock \endcsname 
                                                  \relax \def \ALG@thisblock...
l.11   \EndFor
              
? 
! Missing number, treated as zero.
<to be read again> 
                   \ALG@b@2@EndFor@0 
l.11   \EndFor
              
? 
! Missing \endcsname inserted.
<to be read again> 
                   \ALG@currentblock@2 
l.12 \EndProcedure
                  
? 
! Extra \endcsname.
\ALG@makenobeginrepeat ...LG@thisblock \endcsname 
                                                  \relax \def \ALG@thisblock...
l.12 \EndProcedure
                  
? 
! Missing number, treated as zero.
<to be read again> 
                   \ALG@b@2@EndProcedure@0 
l.12 \EndProcedure
                  
? 
! Missing number, treated as zero.
<to be read again> 
                   \ALG@currentblock@2 
l.45 \end{algorithmic}
                      
? 
! Missing = inserted for \ifnum.
<to be read again> 
                   \ALG@currentblock@2 
l.45 \end{algorithmic}
                      
? 
! Missing number, treated as zero.
<to be read again> 
                   \ALG@currentblock@2 
l.45 \end{algorithmic}
                      
? 

Can anybody help or knows a workaround? That would be greatly appreciated!

kynan

[gmedina]

Hi,

you could use the caption package to define a new floating object:

Code: Select all

\documentclass{article}
\usepackage{algpseudocode,caption}

\DeclareCaptionType{algorithm}

\begin{document}

\begin{algorithm}[!ht]
\caption{Test algorithm}
\begin{algorithmic}[1]
\Procedure {Test}{}
  \For {$i = 1$ to $10$}
    \State print $i$
  \EndFor
\EndProcedure
\end{algorithmic}
\end{algorithm}

\end{document}

[kynan]

Thanks, that looks promising. However your example does not compile for me (I checked the manual and couldn't find out why possibly):

Code: Select all

! Undefined control sequence.
l.4 \DeclareCaptionType
                       {algorithm}
? 

! LaTeX Error: Missing \begin{document}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.4 \DeclareCaptionType{a
                         lgorithm}
? 

! LaTeX Error: Environment algorithm undefined.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.8 \begin{algorithm}
                     [!ht]
? 

! LaTeX Error: \caption outside float.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.9 \caption{
             Test algorithm}
? 
LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <7> on input line 12.
LaTeX Font Info:    External font `cmex10' loaded for size
(Font)              <5> on input line 12.

! LaTeX Error: \begin{document} ended by \end{algorithm}.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.17 \end{algorithm}

[sommerfee]

! Undefined control sequence.
l.4 \DeclareCaptionType

Your TeX distribution seems to be at least three years old.

Updating your TeX distribution or installing an actual one should help.

[kynan]

Anticipated that, it's texlive on Ubuntu 9.10 Thanks for the clarification!

[sommerfee]

it's texlive on Ubuntu 9.10

Then this shouldn't happen, AFAIK Ubuntu 9.10 is using TeXlive 2009.

Please take a look at the log file to see what version of the caption package you are using. It should be at least version 3.1f from 2007. (TeXlive 2009 was shipped with version 3.1m.)

[kynan]

Unfortunately it does not, it uses TeXlive 2007. I just tried to upgrade to TeXlive 2009 from this PPA, but failed. Now my whole TeX distribution is broken

edit: This was the final incentive to upgrade to Lucid. Now it works, thanks! I only get a warning from the memoir class:

Code: Select all

Class memoir Warning: You are using the caption package with the memoir 
(memoir)              class. This may cause unexpected or inconsistent 
(memoir)              results if you use any of memoir's captioning facilities.

[localghost]

Now that the problem seems to be solved, please mark the topic accordingly as described in Section 3 of the Board Rules.


Best regards and welcome to the board
Thorsten

[kynan]

Hope it's OK like that. Or should I add the solution to the initial post?