[OctDev] Proposed changes to cell2mat and inclusion in Octave

[William P. Y. H. <wil...@gm...>]

The blkdiag.m file I imported into Octave is dependent on cell2mat,
but I think it's not quite ready for inclusion into Octave yet. So I
modified the file (attached). Maybe the original author (Laurent
Mazet) and others would like to comment on it before I post it on
bu...@oc...?

Due to my lack of intelligence, I've so far failed to completely
understand the following code by Laurent (hey, but it works!) (it's
been reformatted):

for p =3D (ndims (c)):-1:2,
  sz =3D size (c);
  sz(end) =3D 1;
  c1 =3D cell (sz);
  for q =3D 1:(prod (sz))
    c1{q} =3D cat (p, c{q:(prod (sz)):end});
  endfor
  c =3D c1;
endfor
m =3D cat (1, c1{:});

Can anyone explain it to me?

Note: I changed the wording of the license from "this program" to
"Octave". Is it OK?

--
William Poetra Yoga Hadisoeseno