gnu octave errror

[kakila]

Hi,
Thanks for sharing.
Any idea why I am getting this error in GNU Octave 4.2.1?

error: delaunayn: qhull failed
error: called from
delaunayn at line 60 column 5
delaunay at line 147 column 9
griddata at line 84 column 7
ternplot_pro at line 62 column 4
terndemo at line 20 column 1

If I manage to run it in octave, I would be happy to make a octave-forge package.

[alchemyst]

This appears to be an issue with griddata. I will not have time to resolve this until the end of the year. If you build a PR I would happily accept it.