Matlab example

[bkmgit]

The current Matlab/Octave example code (here) does not use a multigrid preconditioner and requires generation of the matrix by the C code. While this is useful for validating the C code, it can be useful to also generate the matrix directly in Matlab/Octave. Can contribute such a code if it would be helpful.

[luszczek]

Yes, please feel free to submit a pull request with your contribution.