1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) INRIA
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
-->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" version="5.0-subset Scilab" xml:lang="en" xml:id="genfac3d">
<info>
<pubdate>$LastChangedDate$</pubdate>
</info>
<refnamediv>
<refname>genfac3d</refname>
<refpurpose> compute facets of a 3D surface</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>[xx,yy,zz]=genfac3d(x,y,z,[mask])</synopsis>
</refsynopsisdiv>
<refsection>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term>xx,yy,zz</term>
<listitem>
<para>matrices of size (4,n-1xm-1). <literal>xx(:,i)</literal> ,<literal>yy(:,i)</literal> and <literal>zz(:,i)</literal> are respectively the x-axis, y-axis and z-axis coordinates of the 4 points of the ith four sided facet.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>x</term>
<listitem>
<para>x-axis coordinates vector of size m.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>y</term>
<listitem>
<para>y-axis coordinates vector of size n.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>z</term>
<listitem>
<para>matrix of size (m,n). <literal>z(i,j)</literal> is the value of the surface at the point (x(i),y(j)).</para>
</listitem>
</varlistentry>
<varlistentry>
<term>mask</term>
<listitem>
<para>boolean optional matrix with same size as <literal>z</literal> used to select the entries of <literal>z</literal> to be represented by facets.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para><literal>genfac3d</literal> computes a four sided facets representation of a 3D surface
<literal>z=f(x,y)</literal> defined by <literal>x</literal>, <literal>y</literal> and <literal>z</literal>.</para>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
t=[0:0.3:2*%pi]'; z=sin(t)*cos(t');
[xx,yy,zz]=genfac3d(t,t,z);
plot3d(xx,yy,zz)
]]></programlisting>
</refsection>
<refsection>
<title>See Also</title>
<simplelist type="inline">
<member>
<link linkend="eval3dp">eval3dp</link>
</member>
<member>
<link linkend="plot3d">plot3d</link>
</member>
</simplelist>
</refsection>
</refentry>
|
