[Octave-bug-tracker] [bug #35178] griddata: cubic interpolation not yet implemented

[Hartmut]

Follow-up Comment #2, bug #35178 (project octave):

This bug is still present in Octave 4.2.0.

The function griddata.m claims to support the method "cubic" in its help text,
but trying to use it results in an error message: "error: griddata: cubic
interpolation not yet implemented".

A simple script to reproduce this:

xy = gallery('uniformdata',[100 2],0);
x = xy(:,1);
y = xy(:,2);
v = exp(-x.^2-y.^2);
[xq,yq] = meshgrid(-2:.5:2, -2:.5:2);
vq = griddata(x,y,v,xq,yq, "cubic");


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