When I execute the command:
griddata([6 10 6 10], [25 25 125 125], [16 12 28 21], 8, 100)
I receive a very long error message that begins:
??? qhull precision error: initial facet 1 is coplanar with the interior point ERRONEOUS FACET: While executing: | qhull d Qt Qbb Qc Options selected for Qhull 2002.1 2002/8/20: delaunay Qtriangulate Qbbound-last Qcoplanar-keep _pre-merge _zero-centrum Pgood Qinterior-keep _max-width 1e+002 Error-roundoff 1.7e-013 _one-merge 1.2e-012 Visible-distance 3.5e-013 U-coplanar-distance 3.5e-013 Width-outside 6.9e-013 _wide-facet 2.1e-012 precision problems (corrected unless 'Q0' or an error) 2flipped facets The input to qhull appears to be less than 3 dimensional, or a computation has overflowed. Qhull could not construct a clearly convex simplex from input points. The center point is coplanar with a facet, or a vertex is coplanar with a neighboring facet. The maximum round off error for computing distances is 1.7e-013.
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