Integrating Sage with LyX

I have been interested in the LaTeX typesetting system, but not in actually learning the extra syntax. And so I’ve been using a WYSIWYM GUI named ‘LyX‘. The .TEX-Files LyX exports are suitable to creating HTML Files, which in turn can contain typeset Math, by way of scripts, that provide MathJax code.

But then one compromise this has meant for me was, that I could either typeset Math which I had written myself, or that I could do Computer Algebra, the latter through the use of ‘wxMaxima’, which has its own system of exporting to HTML. But so far, I could not do both in one document.

Well, now that I have ‘SageMath’ and ‘SageTeX’ installed, I can do both within the same document. It’s possible to integrate SageTeX into LyX. The following is an article which explains how to do that, under the assumption that the user has both SageTeX and LyX installed:

https://wiki.lyx.org/Layouts/Modules#toc7

There is an important way in which I needed to modify the instructions however, to get the two working. First of all, there is a list of files to download – LyX does not support SageTeX out of the box – that the article above links to. Out of those files, ‘setup.sh’ is absolutely useless on a modern Linux computer. The following files from the repository above are essential:

  1. sage.module
  2. preferences
  3. compile-pdf-sage.sh
  4. example.lyx

The file ‘preferences’ needs to be edited, in that its last line needs to be uncommented.

The file ‘compile-pdf-sage.sh’ needs to be edited, in that the first two lines need to be commented out, and the next three lines which are commented by default, need to be uncommented. Then:

 


(As user:)

$ cp sage.module ~/.lyx/layouts
$ cat preferences >> ~/.lyx/preferences

(As root:)

# cp compile-pdf-sage.sh /usr/local/bin
# chmod a+x /usr/local/bin/compile-pdf-sage.sh


 

Then, within the GUI of LyX, one gives the command ‘Tools -> Reconfigure’. One shuts down and restarts LyX. Next, one opens ‘example.lyx’ to test the setup. The following is the document which I finally obtained (successfully), which was provided by the Web-site above (not written by me):

http://dirkmittler.homeip.net/sg_lyx_1.pdf

Enjoy,

Dirk

 

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