Algorithm tag and page break

Question

I'm starting my experiment with LaTeX, i'm writing an article and all that I want is to embed an algorithm inside normal text, this is my code:

\documentclass{article}
\usepackage{algorithmic}
\begin{document}
\section{Lettura file .gpx} 
Lorem ipsum ...

\algsetup{indent=1.7em}
\begin{algorithm}
\caption{Alg capt}
\label{alg1}

\begin{algorithmic}[1]
... algorithm here...
\end{algorithmic}
\end{algorithm}
\end{document}

This is fully working but algorithmic uses a pagebreak automatically, how can I avoid this break and show the algorithm immediately after "lorem ipsum" part?

Answer 1

If you don't want your algorithm to be treated as a floating object, then don't use the algorithm environment; you can still have a caption using the \captionof command from the caption package; using the appropriate style and format, this caption can have the same look and feel as those produced by the algorithm environment:

\documentclass{article}
\usepackage{algorithm}
\usepackage{algpseudocode}
\usepackage{caption}
\usepackage{lipsum}

\DeclareCaptionFormat{algor}{%
  \hrulefill\par\offinterlineskip\vskip1pt%
    \textbf{#1#2}#3\offinterlineskip\hrulefill}
\DeclareCaptionStyle{algori}{singlelinecheck=off,format=algor,labelsep=space}
\captionsetup[algorithm]{style=algori}

\begin{document}
\section{Lettura file .gpx} 
\lipsum*[1]
\begin{center}
  \captionof{algorithm}{Euclid’s algorithm}\label{euclid}
  \begin{algorithmic}[1]
    \Procedure{Euclid}{$a,b$}\Comment{The g.c.d. of a and b}
    \State $r\gets a\bmod b$
    \While{$r\not=0$}\Comment{We have the answer if r is 0}
      \State $a\gets b$
      \State $b\gets r$
      \State $r\gets a\bmod b$
    \EndWhile
    \State \textbf{return} $b$\Comment{The gcd is b}
    \EndProcedure
  \end{algorithmic}
\end{center}

\end{document}

Answer 2

Here are some suggestions:

• If you're adding your algorithm inside the algorithm float, then it will float according to the "float specifiers" given as the optional argument to the algorithm environment. For example

  \begin{algorithm}[ht]
    ...
  \end{algorithm}
  

  To force the float to be less float-y, add ! to the float specifier. However, as suggested by the float package, this still remains a "suggestive specifier". Instead, the package provides the additional H float specifier which tells LaTeX to "PUT IT HERE!"

• Use the algorithmx package. It is very similar to algorithmic, but allows for more flexibility. Here's a short, yet complete, minimal example (from the algorithmicx package documentation):

  

  \documentclass{article}
  \usepackage{algorithm}% http://ctan.org/pkg/algorithm
  \usepackage{algpseudocode}% http://ctan.org/pkg/algorithmicx
  \usepackage{lipsum}% http://ctan.org/pkg/lipsum
  \usepackage{float}% http://ctan.org/pkg/float
  \begin{document}
  \section{Lettura file .gpx} 
  \lipsum[1]
  \begin{algorithm}[H]
    \caption{Euclid’s algorithm}\label{euclid}
    \begin{algorithmic}[1]
      \Procedure{Euclid}{$a,b$}\Comment{The g.c.d. of a and b}
      \State $r\gets a\bmod b$
      \While{$r\not=0$}\Comment{We have the answer if r is 0}
        \State $a\gets b$
        \State $b\gets r$
        \State $r\gets a\bmod b$
      \EndWhile
      \State \textbf{return} $b$\Comment{The gcd is b}
      \EndProcedure
    \end{algorithmic}
  \end{algorithm}
  \end{document}