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<head>
<title>Qhull quick reference</title>
</head>
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<!-- Navigation links -->
<p><a name="TOC"><b>Up:</b></a> <a href="http://www.qhull.org">Home
page for Qhull</a> <br>
<b>Up:</b> <a href="index.htm#TOC">Qhull manual</a> <br>
<b>To:</b> <a href="qh-quick.htm#programs">Programs</a>
&#149; <a href="qh-quick.htm#options">Options</a>
&#149; <a href="qh-opto.htm#output">Output</a>
&#149; <a href="qh-optf.htm#format">Formats</a>
&#149; <a href="qh-optg.htm#geomview">Geomview</a>
&#149; <a href="qh-optp.htm#print">Print</a>
&#149; <a href="qh-optq.htm#qhull">Qhull</a>
&#149; <a href="qh-optc.htm#prec">Precision</a>
&#149; <a href="qh-optt.htm#trace">Trace</a>
&#149; <a href="../src/libqhull_r/index.htm">Functions</a><br>
<b>To:</b> <a href="qh-code.htm#TOC">Qhull internals</a><br>
<b>To:</b> <a href="../src/libqhull/index.htm">Qhull functions</a>, macros, and data structures<br>
<b>To:</b> <a href="../src/libqhull/index.htm#TOC">Qhull files</a><br>
<b>To:</b> <a href="../src/libqhull/qh-geom.htm">Geom</a> &#149; <a href="../src/libqhull/qh-globa.htm">Global</a>
&#149; <a href="../src/libqhull/qh-io.htm">Io</a> &#149; <a href="../src/libqhull/qh-mem.htm">Mem</a>
&#149; <a href="../src/libqhull/qh-merge.htm">Merge</a> &#149; <a href="../src/libqhull/qh-poly.htm">Poly</a>
&#149; <a href="../src/libqhull/qh-qhull.htm">Qhull</a> &#149; <a href="../src/libqhull/qh-set.htm">Set</a>
&#149; <a href="../src/libqhull/qh-stat.htm">Stat</a> &#149; <a href="../src/libqhull/qh-user.htm">User</a>
</p>
<hr>
<!-- Main text of document -->
<h1><a
href="http://www.geom.uiuc.edu/graphics/pix/Special_Topics/Computational_Geometry/cone.html"><img
src="qh--cone.gif" alt="[cone]" align="middle" width="100"
height="100"></a> Qhull quick reference</h1>
This section lists all programs and options in Qhull.
<p><b>Copyright &copy; 1995-2015 C.B. Barber</b></p>
<p>
<a name="programs">&nbsp;</a>
<hr>
<b>Qhull programs</b>
<p><a href="#TOC">&#187;</a> <a href="qh-quick.htm#programs">Programs</a>
&#149; <a href="qh-quick.htm#options">Options</a>
&#149; <a href="qh-opto.htm#output">Output</a>
&#149; <a href="qh-optf.htm#format">Formats</a>
&#149; <a href="qh-optg.htm#geomview">Geomview</a>
&#149; <a href="qh-optp.htm#print">Print</a>
&#149; <a href="qh-optq.htm#qhull">Qhull</a>
&#149; <a href="qh-optc.htm#prec">Precision</a>
&#149; <a href="qh-optt.htm#trace">Trace</a>
&#149; <a href="../src/libqhull_r/index.htm">Functions</a></p>
<dl>
<dt><a href="qconvex.htm">qconvex</a> -- convex hull</dt>
<dd><a href="qconvex.htm#synopsis">sy</a>nopsis &#149; <a
href="qconvex.htm#input">in</a>put &#149; <a
href="qconvex.htm#outputs">ou</a>tputs &#149; <a
href="qconvex.htm#controls">co</a>ntrols &#149; <a
href="qconvex.htm#graphics">gr</a>aphics &#149; <a
href="qconvex.htm#notes">no</a>tes &#149; <a
href="qconvex.htm#conventions">co</a>nventions &#149; <a
href="qconvex.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qdelaun.htm">qdelaunay</a> -- Delaunay triangulation</dt>
<dd><a href="qdelaun.htm#synopsis">sy</a>nopsis &#149; <a
href="qdelaun.htm#input">in</a>put &#149; <a
href="qdelaun.htm#outputs">ou</a>tputs &#149; <a
href="qdelaun.htm#controls">co</a>ntrols &#149; <a
href="qdelaun.htm#graphics">gr</a>aphics &#149; <a
href="qdelaun.htm#notes">no</a>tes &#149; <a
href="qdelaun.htm#conventions">co</a>nventions &#149; <a
href="qdelaun.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qdelau_f.htm">qdelaunay Qu</a> -- furthest-site Delaunay triangulation</dt>
<dd><a href="qdelau_f.htm#synopsis">sy</a>nopsis &#149; <a
href="qdelau_f.htm#input">in</a>put &#149; <a
href="qdelau_f.htm#outputs">ou</a>tputs &#149; <a
href="qdelau_f.htm#controls">co</a>ntrols &#149; <a
href="qdelau_f.htm#graphics">gr</a>aphics &#149; <a
href="qdelau_f.htm#notes">no</a>tes &#149; <a
href="qdelau_f.htm#conventions">co</a>nventions &#149; <a
href="qdelau_f.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qhalf.htm">qhalf</a> -- halfspace intersection about a point</dt>
<dd><a href="qhalf.htm#synopsis">sy</a>nopsis &#149; <a
href="qhalf.htm#input">in</a>put &#149; <a
href="qhalf.htm#outputs">ou</a>tputs &#149; <a
href="qhalf.htm#controls">co</a>ntrols &#149; <a
href="qhalf.htm#graphics">gr</a>aphics &#149; <a
href="qhalf.htm#notes">no</a>tes &#149; <a
href="qhalf.htm#conventions">co</a>nventions &#149; <a
href="qhalf.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qvoronoi.htm">qvoronoi</a> -- Voronoi diagram</dt>
<dd><a href="qvoronoi.htm#synopsis">sy</a>nopsis &#149; <a
href="qvoronoi.htm#input">in</a>put &#149; <a
href="qvoronoi.htm#outputs">ou</a>tputs &#149;
<a href="qvoronoi.htm#controls">co</a>ntrols &#149; <a
href="qvoronoi.htm#graphics">gr</a>aphics &#149; <a
href="qvoronoi.htm#notes">no</a>tes &#149; <a
href="qvoronoi.htm#conventions">co</a>nventions &#149; <a
href="qvoronoi.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qvoron_f.htm">qvoronoi Qu</a> -- furthest-site Voronoi diagram</dt>
<dd><a href="qvoron_f.htm#synopsis">sy</a>nopsis &#149; <a
href="qvoron_f.htm#input">in</a>put &#149; <a
href="qvoron_f.htm#outputs">ou</a>tputs &#149; <a
href="qvoron_f.htm#controls">co</a>ntrols &#149; <a
href="qvoron_f.htm#graphics">gr</a>aphics &#149; <a
href="qvoron_f.htm#notes">no</a>tes &#149; <a
href="qvoron_f.htm#conventions">co</a>nventions &#149; <a
href="qvoron_f.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="rbox.htm">rbox</a> -- generate point distributions for qhull</dt>
<dd><a href="rbox.htm#synopsis">sy</a>nopsis &#149; <a
href="rbox.htm#outputs">ou</a>tputs &#149; <a
href="rbox.htm#examples">ex</a>amples &#149; <a
href="rbox.htm#notes">no</a>tes &#149; <a
href="rbox.htm#options">op</a>tions</dd>
<dt>&nbsp;</dt>
<dt><a href="qhull.htm">qhull</a> -- convex hull and related structures</dt>
<dd><a href="qhull.htm#synopsis">sy</a>nopsis &#149; <a
href="qhull.htm#input">in</a>put &#149; <a
href="qhull.htm#outputs">ou</a>tputs &#149; <a
href="qhull.htm#controls">co</a>ntrols &#149; <a
href="qhull.htm#options">op</a>tions</dd>
</dl>
<a name="options">&nbsp;</a>
<hr>
<b>Qhull options</b>
<p><a href="#TOC">&#187;</a> <a href="qh-quick.htm#programs">Programs</a>
&#149; <a href="qh-quick.htm#options">Options</a>
&#149; <a href="qh-opto.htm#output">Output</a>
&#149; <a href="qh-optf.htm#format">Formats</a>
&#149; <a href="qh-optg.htm#geomview">Geomview</a>
&#149; <a href="qh-optp.htm#print">Print</a>
&#149; <a href="qh-optq.htm#qhull">Qhull</a>
&#149; <a href="qh-optc.htm#prec">Precision</a>
&#149; <a href="qh-optt.htm#trace">Trace</a>
&#149; <a href="../src/libqhull_r/index.htm">Functions</a></p>
<p><table>
<!-- Note: keep all lines the same for easy reorganization -->
<tr>
<td><nobr>'<a href=qh-optf.htm#Fa>Fa</a>'
Farea
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fa>FA</a>'
FArea-total
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fc>Fc</a>'
Fcoplanars
</nobr></td><td><nobr>'<a href=qh-optf.htm#FC>FC</a>'
FCentrums
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#Fd>Fd</a>'
Fd-cdd-in
</nobr></td><td><nobr>'<a href=qh-optf.htm#FD>FD</a>'
FD-cdd-out
</nobr></td><td><nobr>'<a href=qh-optf.htm#FF>FF</a>'
FF-dump-xridge
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fi>Fi</a>'
Finner
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#Fi2>Fi</a>'
Finner_bounded
</nobr></td><td><nobr>'<a href=qh-optf.htm#FI>FI</a>'
FIDs
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fm>Fm</a>'
Fmerges
</nobr></td><td><nobr>'<a href=qh-optf.htm#FM>FM</a>'
FMaple
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#Fn>Fn</a>'
Fneighbors
</nobr></td><td><nobr>'<a href=qh-optf.htm#FN>FN</a>'
FNeigh-vertex
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fo>Fo</a>'
Fouter
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fo2>Fo</a>'
Fouter_unbounded
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#FO>FO</a>'
FOptions
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fp>Fp</a>'
Fpoint-intersect
</nobr></td><td><nobr>'<a href=qh-optf.htm#FP>FP</a>'
FPoint_near
</nobr></td><td><nobr>'<a href=qh-optf.htm#FQ>FQ</a>'
FQhull
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#Fs>Fs</a>'
Fsummary
</nobr></td><td><nobr>'<a href=qh-optf.htm#FS>FS</a>'
FSize
</nobr></td><td><nobr>'<a href=qh-optf.htm#Ft>Ft</a>'
Ftriangles
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fv>Fv</a>'
Fvertices
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optf.htm#Fv2>Fv</a>'
Fvoronoi
</nobr></td><td><nobr>'<a href=qh-optf.htm#FV>FV</a>'
FVertex-ave
</nobr></td><td><nobr>'<a href=qh-optf.htm#Fx>Fx</a>'
Fxtremes
</nobr></td><td colspan=2><nobr>
<a href=qh-impre.htm#joggle>Merged facets or joggled input</a>
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optp.htm#PAn>PAn</a>'
PArea-keep
</nobr></td><td><nobr>'<a href=qh-optp.htm#Pdk>Pdk:n</a>'
Pdrop_low
</nobr></td><td><nobr>'<a href=qh-optp.htm#PDk>PDk:n</a>'
Pdrop_high
</nobr></td><td><nobr>'<a href=qh-optp.htm#Pg>Pg</a>'
Pgood
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optp.htm#PFn>PFn</a>'
PFacet_area_keep
</nobr></td><td><nobr>'<a href=qh-optp.htm#PG>PG</a>'
PGood_neighbors
</nobr></td><td><nobr>'<a href=qh-optp.htm#PMn>PMn</a>'
PMerge-keep
</nobr></td><td><nobr>'<a href=qh-optp.htm#Po>Po</a>'
Poutput_forced
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optp.htm#Po2>Po</a>'
Poutput_error
</nobr></td><td><nobr>'<a href=qh-optp.htm#Pp>Pp</a>'
Pprecision_not
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qhull.htm#outputs>d</a>'
delaunay
</nobr></td><td><nobr>'<a href=qhull.htm#outputs>v</a>'
voronoi
</nobr></td><td><nobr>'<a href=qh-optg.htm>G</a>'
Geomview
</nobr></td><td><nobr>'<a href=qhull.htm#outputs>H</a>'
Halfspace
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-opto.htm#f>f</a>'
facet_dump
</nobr></td><td><nobr>'<a href=qh-opto.htm#i>i</a>'
incidences
</nobr></td><td><nobr>'<a href=qh-opto.htm#m>m</a>'
mathematica
</nobr></td><td><nobr>'<a href=qh-opto.htm#n>n</a>'
normals
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-opto.htm#o>o</a>'
OFF_format
</nobr></td><td><nobr>'<a href=qh-opto.htm#p>p</a>'
points
</nobr></td><td><nobr>'<a href=qh-opto.htm#s>s</a>'
summary
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optg.htm#Gv>Gv</a>'
Gvertices
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gp>Gp</a>'
Gpoints
</nobr></td><td><nobr>'<a href=qh-optg.htm#Ga>Ga</a>'
Gall_points
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gn>Gn</a>'
Gno_planes
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optg.htm#Gi>Gi</a>'
Ginner
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gc>Gc</a>'
Gcentrums
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gh>Gh</a>'
Ghyperplanes
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gr>Gr</a>'
Gridges
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optg.htm#Go>Go</a>'
Gouter
</nobr></td><td><nobr>'<a href=qh-optg.htm#GDn>GDn</a>'
GDrop_dim
</nobr></td><td><nobr>'<a href=qh-optg.htm#Gt>Gt</a>'
Gtransparent
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optt.htm#Tn>T4</a>'
T4_trace
</nobr></td><td><nobr>'<a href=qh-optt.htm#Tc>Tc</a>'
Tcheck_often
</nobr></td><td><nobr>'<a href=qh-optt.htm#Ts>Ts</a>'
Tstatistics
</nobr></td><td><nobr>'<a href=qh-optt.htm#Tv>Tv</a>'
Tverify
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optt.htm#Tz>Tz</a>'
Tz_stdout
</nobr></td><td><nobr>'<a href=qh-optt.htm#TFn>TFn</a>'
TFacet_log
<td><nobr>'<a href=qh-optt.htm#TI>TI file</a>'
TInput_file
</nobr></td><td><nobr>'<a href=qh-optt.htm#TPn>TPn</a>'
TPoint_trace
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optt.htm#TMn>TMn</a>'
TMerge_trace
</nobr></td><td><nobr>'<a href=qh-optt.htm#TO>TO file</a>'
TOutput_file
</nobr></td><td><nobr>'<a href=qh-optt.htm#TRn>TRn</a>'
TRerun
</nobr></td><td><nobr>'<a href=qh-optt.htm#TWn>TWn</a>'
TWide_trace
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optt.htm#TVn>TV-n</a>'
TVertex_stop_before
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optt.htm#TVn2>TVn</a>'
TVertex_stop_after
</nobr></td><td><nobr>'<a href=qh-optt.htm#TCn>TCn</a>'
TCone_stop_after
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optc.htm#An>A-n</a>'
Angle_max_pre
</nobr></td><td><nobr>'<a href=qh-optc.htm#An2>An</a>'
Angle_max_post
</nobr></td><td><nobr>'<a href=qh-optc.htm#C0>C-0</a>'
Centrum_roundoff
</nobr></td><td><nobr>'<a href=qh-optc.htm#Cn>C-n</a>'
Centrum_size_pre
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optc.htm#Cn2>Cn</a>'
Centrum_size_post
</nobr></td><td><nobr>'<a href=qh-optc.htm#En>En</a>'
Error_round
</nobr></td><td><nobr>'<a href=qh-optc.htm#Rn>Rn</a>'
Random_dist
</nobr></td><td><nobr>'<a href=qh-optc.htm#Vn>Vn</a>'
Visible_min
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optc.htm#Un>Un</a>'
Ucoplanar_max
</nobr></td><td><nobr>'<a href=qh-optc.htm#Wn>Wn</a>'
Wide_outside
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Qbk>Qbk:n</a>'
Qbound_low
</nobr></td><td><nobr>'<a href=qh-optq.htm#QBk>QBk:n</a>'
QBound_high
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qb0>Qbk:0Bk:0</a>'
Qbound_drop
</nobr></td><td><nobr>'<a href=qh-optq.htm#QbB>QbB</a>'
QbB-scale-box
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Qbb>Qbb</a>'
Qbb-scale-last
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qc>Qc</a>'
Qcoplanar
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qf>Qf</a>'
Qfurthest
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qg>Qg</a>'
Qgood_only
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#QGn>QGn</a>'
QGood_point
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qi>Qi</a>'
Qinterior
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qm>Qm</a>'
Qmax_out
</nobr></td><td><nobr>'<a href=qh-optq.htm#QJn>QJn</a>'
QJoggle
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Qr>Qr</a>'
Qrandom
</nobr></td><td><nobr>'<a href=qh-optq.htm#QRn>QRn</a>'
QRotate
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qs>Qs</a>'
Qsearch_1st
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qt>Qt</a>'
Qtriangulate
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Qu>Qu</a>'
QupperDelaunay
</nobr><td><nobr>'<a href=qh-optq.htm#QVn>QVn</a>'
QVertex_good
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qv>Qv</a>'
Qvneighbors
</nobr></td><td><nobr>'<a href=qh-optq.htm#Qx>Qx</a>'
Qxact_merge
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Qz>Qz</a>'
Qzinfinite
</nobr></td></tr>
<tr><td>&nbsp;</td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Q0>Q0</a>'
Q0_no_premerge
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q1>Q1</a>'
Q1_no_angle
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q2>Q2</a>'
Q2_no_independ
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q3>Q3</a>'
Q3_no_redundant
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Q4>Q4</a>'
Q4_no_old
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q5>Q5</a>'
Q5_no_check_out
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q6>Q6</a>'
Q6_no_concave
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q7>Q7</a>'
Q7_depth_first
</nobr></td></tr><tr>
<td><nobr>'<a href=qh-optq.htm#Q8>Q8</a>'
Q8_no_near_in
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q9>Q9</a>'
Q9_pick_furthest
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q10>Q10</a>'
Q10_no_narrow
</nobr></td><td><nobr>'<a href=qh-optq.htm#Q11>Q11</a>'
Q11_trinormals
</td></tr></table>
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<p><a href="http://www.geom.uiuc.edu/"><img src="qh--geom.gif"
align="middle" width="40" height="40"></a><i>The Geometry Center
Home Page </i></p>
<p>Comments to: <a href=mailto:qhull@qhull.org>qhull@qhull.org</a>
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Created: Sept. 25, 1995 --- <!-- hhmts start --> Last modified: see top <!-- hhmts end --> </p>
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