Diff for "Tips"

Tips for Using SAGE

• GeoGebra [http://www.geogebra.org/cms/ GeoGebra] is a free and multi-platform dynamic mathematics software for schools that joins geometry, algebra and calculus. Here's how you can embed it in the SAGE notebook.

  1. In GeoGebra: Create some geometric construction or plot an algebraic expression. See [http://www.geogebra.org/cms/index.php?option=com_content&task=blogcategory&id=69&Itemid=56 this page] for more details.

  2. In GeoGebra: File> Export> Dynamic worksheet.

  3. Open the .html just exported with a text editor and copy the <applet> section.

  4. In SAGE notebook: Data> Upload the .jar and .ggb files just exported.

  5. In SAGE notebook: Edit> Paste the <applet> section.

  6. In the <applet> section, change codebase="./data/", you can also set some of the flags to true.

  7. Save changes, and you're done.

• Vim filetypes To get Vim to use Python syntax highlighting, indentation, and so on for .sage files, put the following in $VIM/filetype.vim:

{{{augroup filetypedetect

• au! BufRead,BufNewFile *.sage,*.spyx,*.pyx setfiletype python

augroup END }}}

• If you are one of...[http://www.gnu.org/software/emacs/ those people] you'll want to visit http://www.sagemath.org/emacs/.

• Autocompletion for the bash shell So, you'd like bash to autocomplete Sage files, but you want to somehow exclude those .py files that have been autogenerated by Sage. Here's a snippet that will do that for you. Put this somewhere where it will get sourced, such as your .bashrc, .bash_profile, or whatever. Often bash is set up so that it will automatically pull in completions defined in ~/.bash_completion. Here's the code:

{{{_sagecomp() {

• local cur files
  • COMPREPLY=() cur="${COMP_WORDS[COMP_CWORD]}"

    files="(compgen -o dirnames -X '!*.@(sage|?(s)pyx|py)' -f {cur})" if "$files" then

    • COMPREPLY=((egrep -L '^# This file was \*autogenerated\* from the file .*\.sage' files))

    fi

} complete -F _sagecomp sage }}}

• See [http://www.debian-administration.org/articles/317 this article] for more information. --DanDrake