<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Geometry (GNU Octave (version 5.1.0))</title> <meta name="description" content="Geometry (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Geometry (GNU Octave (version 5.1.0))"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="index.html#Top" rel="up" title="Top"> <link href="Delaunay-Triangulation.html#Delaunay-Triangulation" rel="next" title="Delaunay Triangulation"> <link href="Multi_002ddimensional-Interpolation.html#Multi_002ddimensional-Interpolation" rel="prev" title="Multi-dimensional Interpolation"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> <link rel="stylesheet" type="text/css" href="octave.css"> </head> <body lang="en"> <a name="Geometry"></a> <div class="header"> <p> Next: <a href="Signal-Processing.html#Signal-Processing" accesskey="n" rel="next">Signal Processing</a>, Previous: <a href="Interpolation.html#Interpolation" accesskey="p" rel="prev">Interpolation</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> </div> <hr> <a name="Geometry-1"></a> <h2 class="chapter">30 Geometry</h2> <p>Much of the geometry code in Octave is based on the Qhull library<a name="DOCF12" href="#FOOT12"><sup>12</sup></a>. Some of the documentation for Qhull, particularly for the options that can be passed to <code>delaunay</code>, <code>voronoi</code> and <code>convhull</code>, etc., is relevant to Octave users. </p> <table class="menu" border="0" cellspacing="0"> <tr><td align="left" valign="top">• <a href="Delaunay-Triangulation.html#Delaunay-Triangulation" accesskey="1">Delaunay Triangulation</a>:</td><td> </td><td align="left" valign="top"> </td></tr> <tr><td align="left" valign="top">• <a href="Voronoi-Diagrams.html#Voronoi-Diagrams" accesskey="2">Voronoi Diagrams</a>:</td><td> </td><td align="left" valign="top"> </td></tr> <tr><td align="left" valign="top">• <a href="Convex-Hull.html#Convex-Hull" accesskey="3">Convex Hull</a>:</td><td> </td><td align="left" valign="top"> </td></tr> <tr><td align="left" valign="top">• <a href="Interpolation-on-Scattered-Data.html#Interpolation-on-Scattered-Data" accesskey="4">Interpolation on Scattered Data</a>:</td><td> </td><td align="left" valign="top"> </td></tr> </table> <div class="footnote"> <hr> <h4 class="footnotes-heading">Footnotes</h4> <h3><a name="FOOT12" href="#DOCF12">(12)</a></h3> <p>Barber, C.B., Dobkin, D.P., and Huhdanpaa, H.T., <cite>The Quickhull Algorithm for Convex Hulls</cite>, ACM Trans. on Mathematical Software, 22(4):469–483, Dec 1996, <a href="http://www.qhull.org">http://www.qhull.org</a></p> </div> </body> </html>