GNU Octave

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GNU Octave is a free and open-source computing environment and high-level interactive programming language, that is primarily intended for numerical computations.

Installation

USE flags

USE flags for sci-mathematics/octave High-level interactive language for numerical computations

fftw Use FFTW library for computing Fourier transforms global
glpk Add support for sci-mathematics/glpk for linear programming local
gnuplot Enable support for gnuplot (data and function plotting) global
graphicsmagick Build and link against GraphicsMagick instead of ImageMagick (might require USE=imagemagick if optional) global
gui Enable the graphical user interface local
hdf5 Add support for the Hierarchical Data Format v5 global
java Add support for Java global
openssl Use dev-libs/openssl for low level hash functions local
portaudio Add support for the crossplatform portaudio audio API global
postscript Enable support for the PostScript language (often with ghostscript-gpl or libspectre) global
qhull Add support for media-libs/qhull, to allow `delaunay', `convhull', and related functions local
qrupdate Add support for sci-libs/qrupdatefor QR and Cholesky update functions local
readline Enable support for libreadline, a GNU line-editing library that almost everyone wants global
sndfile Add support for libsndfile global
sparse Add enhanced support for sparse matrix algebra with SuiteSparse local
static-libs Build static versions of dynamic libraries as well global

Emerge

root #emerge --ask sci-mathematics/octave

Octave packages

Octave's functionality (i.e. selection of functions available to the user in octave) is extended via octave-packages[1], usually provided by octave-forge[2]. There are two ways to install octave packages:

  • Use Octave's own pkg command to install missing packages (requires the curl USE flag)
  • Use app-portage/g-octave to generate ebuilds for octave-packages from Octave-Forge and install them via Portage

There is conflicting information about which method to prefer [3] [4], so no recommendation can be given at this point.

References