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diff NEWS @ 13746:7ff0bdc3dc4c

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Revamp geometry functions dependent on Qhull (Bug #34604, Bug #33346) * NEWS : Document new options being passed to Qhull * convhull.m, delaunay.m, delaunay3.m, delaunayn.m, voronoi.m, voronoin.m: Update docstrings. Put input validation first. Use same variable names as Matlab. Restore random state altered in demos. * __delaunayn__.cc: Use common syntax for parsing OPTIONS input. Add 'Qz' option to qhull command for 2D,3D data. Correctly free all Qhull memory and avoid segfault with non-simplicial facets. * __voronoi__.cc: Use common syntax for parsing OPTIONS input. Correctly free all Qhull memory. * convhulln.cc: Use common syntax for parsing OPTIONS input. Use Matlab-compatible options for qhull command. Correctly free all Qhull memory. Allow return of non-simplicial facets without causing a segfault.
author Rik <octave@nomad.inbox5.com>
date Tue, 25 Oct 2011 10:17:23 -0700
parents 571557ddabb9
children 62d1f56b0be7
line wrap: on
line diff
--- a/NEWS	Mon Oct 24 16:16:50 2011 -0400
+++ b/NEWS	Tue Oct 25 10:17:23 2011 -0700
@@ -46,6 +46,16 @@
               in pattern and in string.  Note that Matlab documents this 
               behavior but the implementation does *not* always follow it.
 
+ ** Geometry functions derived from Qhull (convhull, delaunay, voronoi)
+    have been revamped.  The options passed to the underlying qhull command
+    have been changed for better results or for Matlab compatibility.
+
+    convhull : Default options are "Qt" for 2D, 3D, 4D inputs
+               Default options are "Qt Qx" for 5D and higher
+    delaunay : Default options are "Qt Qbb Qc Qz" for 2D and 3D inputs
+               Default options are "Qt Qbb Qc Qx" for 4D and higher
+    voronoi  : No default arguments
+
  ** Matlab-compatible preference functions:
 
       addpref  getpref  ispref  rmpref  setpref