[Octave-bug-tracker] [bug #30587] buggy implementation of bicubic interpolation in interp2/bicubic

[Jaroslav Hajek]

Follow-up Comment #3, bug #30587 (project octave):

I think the behavior where column x row vectors are automatically meshgridded
is taken from Matlab. Note that an implementation doesn't actually need to
form the meshgrid at all. So, as far as I understand, the bug is that bicubic
can't handle non-meshgrid inputs. Given that bicubic is available as
stand-alone function, unless someone extends bicubic I suggest that interp2
won't call bicubic at all, to keep the results consistent. Picking faster/more
accurate code for special cases is OK, but two fundamentally different methods
shouldn't be used under the same name.

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