Cfrgtkky

I'm using using algorithm2e package with the following settings:

usepackage[ruled,vlined,linesnumbered,noresetcount]{algorithm2e}

But for some subset of algorithms in the same document, I want to use this setting:

usepackage[boxed]{algorithm2e}

Is there a way to override the default setting just for a subset?

I found a similar question:
algorithm2e with 'ruled' but with caption underneath?
Here newenvironment is used to override the default setting of an option. But I want to override the option itself.

I wish there was a way to load a package several times with different options for each instance.

You have to adjust the settings manually:

documentclass{article}



usepackage[ruled,vlined,linesnumbered,noresetcount]{algorithm2e}



makeatletter

newcommand{AlgoResetCount}{renewcommand{@ResetCounterIfNeeded}{setcounter{AlgoLine}{0}}}

newcommand{AlgoNoResetCount}{renewcommand{@ResetCounterIfNeeded}{}}

newcounter{AlgoSavedLineCount}

newcommand{AlgoSaveLineCount}{setcounter{AlgoSavedLineCount}{value{AlgoLine}}}

newcommand{AlgoRestoreLineCount}{setcounter{AlgoLine}{value{AlgoSavedLineCount}}}

makeatother



begin{document}



begin{algorithm}[H]

  KwData{this text}

  KwResult{how to write algorithm with LaTeX2e }

  initialization;

  While{not at end of this document}{

    read current;

    eIf{understand}{

      go to next section;

      current section becomes this one;

    }{

      go back to the beginning of current section;

    }

  }

  caption{How to write algorithms}

end{algorithm}



RestyleAlgo{boxed}% Change from the 'ruled' style to 'boxed'

SetAlgoNoLine% Removes 'vlined' option (somewhat opposite of SetAlgoVlined)

LinesNumberedHidden% Removes 'linesnumbered' option (opposite of LinesNumbered)

AlgoSaveLineCount% Stores the algorithm line number (similar to 'resetcount' in the package load option)



begin{algorithm}[H]

  KwData{this text}

  KwResult{how to write algorithm with LaTeX2e }

  initialization;

  While{not at end of this document}{

    read current;

    eIf{understand}{

      go to next section;

      current section becomes this one;

    }{

      go back to the beginning of current section;

    }

  }

  caption{How to write algorithms}

end{algorithm}



RestyleAlgo{ruled}% Change from the 'boxed' style to 'ruled'

SetAlgoVlined% Similar to 'vlined' in the package load option

LinesNumbered% Similar to 'linesnumbered' in the package load option

AlgoRestoreLineCount% Restores the algorithm line number (similar to 'noresetcount' in the package load option)



begin{algorithm}[H]

  KwData{this text}

  KwResult{how to write algorithm with LaTeX2e }

  initialization;

  While{not at end of this document}{

    read current;

    eIf{understand}{

      go to next section;

      current section becomes this one;

    }{

      go back to the beginning of current section;

    }

  }

  caption{How to write algorithms}

end{algorithm}



end{document}

Not much manual adjustment is needed! You only add
RestyleAlgo{options}
right before the algorithm definition you want to be overridden.

Note that options can be one of the followings: boxed, boxruled, ruled and algoruled.

Ex:

After defining usepachage{algorithm2e} in preamble:

     RestyleAlgo{ruled}

     begin{algorithm}

      ....

      end{algorithm}

That's it!