[Octave-bug-tracker] [bug #45542] griddatan unable to perform 4-dimensional interpolation.

[Markus Mützel]

Update of bug #45542 (project octave):

                  Status:                   Fixed => In Progress            
             Open/Closed:                  Closed => Open                   

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Follow-up Comment #5:

The test suite running on the build bots fails with the following errors:

>>>>> processing
/scratch/buildbot/workers/jwe-debian-x86_64-1/clang-4_0-debian/src/scripts/geometry/griddata3.m
***** testif HAVE_QHULL
 old_state = rand ("state");
 restore_state = onCleanup (@() rand ("state", old_state));
 rand ("state", 0);
 x = 2 * rand (1000, 1) - 1;
 y = 2 * rand (1000, 1) - 1;
 z = 2 * rand (1000, 1) - 1;
 v = x.^2 + y.^2 + z.^2;
 [xi, yi, zi] = meshgrid (-0.8:0.2:0.8);
 vi = griddata3 (x, y, z, v, xi, yi, zi, "linear");
 vv = vi - xi.^2 - yi.^2 - zi.^2;
 assert (max (abs (vv(:))), 0, 0.1);
!!!!! test failed
product: nonconformant arguments (op1 is 4x729, op2 is 729x4)
***** testif HAVE_QHULL
 old_state = rand ("state");
 restore_state = onCleanup (@() rand ("state", old_state));
 rand ("state", 0);
 x = 2 * rand (1000, 1) - 1;
 y = 2 * rand (1000, 1) - 1;
 z = 2 * rand (1000, 1) - 1;
 v = x.^2 + y.^2 + z.^2;
 [xi, yi, zi] = meshgrid (-0.8:0.2:0.8);
 vi = griddata3 (x, y, z, v, xi, yi, zi, "nearest");
 vv = vi - xi.^2 - yi.^2 - zi.^2;
 assert (max (abs (vv(:))), 0, 0.1);
!!!!! test failed
product: nonconformant arguments (op1 is 4x729, op2 is 729x4)
>>>>> processing
/scratch/buildbot/workers/jwe-debian-x86_64-1/clang-4_0-debian/src/scripts/geometry/griddatan.m
***** testif HAVE_QHULL
 [xx,yy] = meshgrid (linspace (-1,1,32));
 xi = [xx(:), yy(:)];
 x = 2*rand (100,2) - 1;
 x = [x;1,1;1,-1;-1,-1;-1,1];
 y = sin (2 * sum (x.^2,2));
 zz = griddatan (x,y,xi,"linear");
 zz2 = griddata (x(:,1),x(:,2),y,xi(:,1),xi(:,2),"linear");
 assert (zz, zz2, 1e-10);
!!!!! test failed
product: nonconformant arguments (op1 is 3x1024, op2 is 1024x3)


Re-opening because I think this might be related to this change.

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