I'd use Emacs if they:

- Purged are gnuplot dependencies with a custom and actual GNU bound 3d plotting software. GNU calc for Emacs should have been working with core Emacs libraries long ago.

- Plotutils extended for 3D should have been mandatory long ago

- GNU made Texinfo not be Texlive dependant for PDF/HTML output. Texinfo should have been standalone a la mandoc it's under Unix for PDF output.