[Octave-bug-tracker] [bug #49506] interp2(..., 'linear') gives incorrect result

[Rik]

Follow-up Comment #2, bug #49506 (project octave):

The problem is in the final line of the "linear" method.

## apply plane equation
ZI = a(idx) + b(idx).*Xsc + c(idx).*Ysc + d(idx).*Xsc.*Ysc;


At this point the factors a, b, c, d are all column vectors (2x1), while Xsc
and Ysc are row vectors (1x2).  The multiplication steps broadcast
automatically to create 2x2 final matrices.

I don't know what the best way to resolve this is.


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