Editing Octave for openSUSE

=== Installation ===

Octave binary packages are provided from the OSS repository of all recent openSUSE versions. Octave can be installed using [https://software.opensuse.org/package/octave One Click Install], YaST, or the zypper command:

 zypper install octave

It is recommended to additionally install the development files.  They are required, for installing [[#Octave Forge packages|Octave Forge]] packages outside openSUSE's OSS repository or to create applications using Octave.

 zypper install octave-devel

==== The science repository ====

If you want to use '''latest stable version of Octave''', you can obtain the binary packages via [http://software.opensuse.org/download.html?project=science&package=octave One Click Install] from the science repository.

To add the science repository manually, use the zypper commands (<code><openSUSE_version></code> is for example <code>openSUSE_Leap_42.3</code>):

 zypper addrepo http://download.opensuse.org/repositories/science/<openSUSE_version>/science.repo
 zypper refresh

And to install Octave from the science repository type:

 zypper install --from science octave

=== Octave Forge packages ===

[[Octave-Forge]] binary packages are provided from the OSS and science repository. You can list all available packages by the zypper command:

 zypper search octave-forge*

=== Linear algebra libraries ===

openSUSE uses reference BLAS and LAPACK implementations by default, but ATLAS or OpenBLAS are usually much faster. You can switch it by update-alternatives mechanism:

 /usr/sbin/update-alternatives --config libblas.so.3

 /usr/sbin/update-alternatives --config liblapack.so.3

Example:

 There are 4 choices for the alternative libblas.so.3 (providing /usr/lib64/libblas.so.3).
 
   Selection    Path                             Priority   Status
 ------------------------------------------------------------
 * 0            /usr/lib64/libblas.so.3.4.2       50        auto mode
   1            /usr/lib64/atlas/libsatlas.so.3   20        manual mode
   2            /usr/lib64/atlas/libtatlas.so.3   20        manual mode
   3            /usr/lib64/libblas.so.3.4.2       50        manual mode
   4            /usr/lib64/libopenblasp.so.0      20        manual mode

See [https://en.opensuse.org/openSUSE:Science_Linear_algebra_libraries linear algebra libraries page] at openSUSE wiki for more information.

=== Image export and import ===

GraphicsMagick++ library from openSUSE repositories was compiled with quantum depth 16 which limits reading and writing images to 16 bit. See more details on [[GraphicsMagick]] wiki page.

=== Bug reporting ===
You can report openSUSE specific bugs by pressing "Report Bug" button on [https://build.opensuse.org/package/show/science/octave OBS Octave page] (openSUSE bugzilla account required).

[[Category:GNU/Linux]]
[[Category:Installation]]