x.
% Octave
% To install Octave on Mac, see their <https://wiki.octave.org/Octave_for_macOS 
% wiki> for instructions.
% 
% io and statistics packages are required for some features, but are easy to 
% install with the following commands in the Octave user interface: 
% 
% |pkg install -forge io|
% 
% |pkg install -forge statistics|
% 
% after which you need to load the statistics package
% 
% |pkg load statistics|
% 
% Anisotropic diffusion MRP prior when using either implementation 1 or 4 does 
% not work