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From: Sang-yeop Chung on 3 Aug 2010 22:31
Hi,

I use 'delaunay3' function in MATLAB.
when i use this function with a small number of elements,
I works well.
But when i applied it for more than 100,000,000 elements,
the error occurs as below
------------------------------------------------------------------------------------------------
??? Error using ==> qhullmx
qhull warning: more than 16777215 ridges. ID field overflows and two
ridges
may have the same identifier. Otherwise output ok.

While executing: | qhull d Qt Qbb Qc

Options selected for Qhull 2003.1 2003/12/30:
delaunay Qtriangulate Qbbound-last Qcoplanar-keep _pre-merge
_zero-centrum Pgood Qinterior-keep _max-width 1 Error-roundoff
1.9e-15
_one-merge 1.7e-14 Visible-distance 1.2e-14 U-coplanar-distance
1.2e-14
Width-outside 2.3e-14 _wide-facet 6.9e-14

Last point added to hull was p127168.
Last merge was #9630111.

Qhull has finished constructing the hull.

At error exit:

precision problems (corrected unless 'Q0' or an error)

8136372
coplanar horizon facets for new vertices

8327
degenerate hyperplanes recomputed with gaussian elimination

8327
nearly singular or axis-parallel hyperplanes
-----------------------------------------------------------------------------------------

I cannot understand the message exactly.
what is the problem and how can i fix it??
I need your help.
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