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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
<head>
<title>GNU Octave: Use of the interpreter Property</title>
<meta name="description" content="GNU Octave: Use of the interpreter Property">
<meta name="keywords" content="GNU Octave: Use of the interpreter Property">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<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="High_002dLevel-Plotting.html#High_002dLevel-Plotting" rel="up" title="High-Level Plotting">
<link href="Printing-and-Saving-Plots.html#Printing-and-Saving-Plots" rel="next" title="Printing and Saving Plots">
<link href="Manipulation-of-Plot-Windows.html#Manipulation-of-Plot-Windows" rel="prev" title="Manipulation of Plot Windows">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.indentedblock {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
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.nocodebreak {white-space:nowrap}
span.nolinebreak {white-space:nowrap}
span.roman {font-family:serif; font-weight:normal}
span.sansserif {font-family:sans-serif; font-weight:normal}
ul.no-bullet {list-style: none}
-->
</style>
</head>
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
<a name="Use-of-the-interpreter-Property"></a>
<div class="header">
<p>
Next: <a href="Printing-and-Saving-Plots.html#Printing-and-Saving-Plots" accesskey="n" rel="next">Printing and Saving Plots</a>, Previous: <a href="Manipulation-of-Plot-Windows.html#Manipulation-of-Plot-Windows" accesskey="p" rel="prev">Manipulation of Plot Windows</a>, Up: <a href="High_002dLevel-Plotting.html#High_002dLevel-Plotting" accesskey="u" rel="up">High-Level Plotting</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="Use-of-the-interpreter-Property-1"></a>
<h4 class="subsection">15.2.7 Use of the <code>interpreter</code> Property</h4>
<p>All text objects—such as titles, labels, legends, and text—include
the property <code>"interpreter"</code>, this property determines the manner in
which special control sequences in the text are rendered. If the interpreter
is set to <code>"none"</code>, then no rendering occurs. Currently the
<code>"latex"</code> interpreter is not implemented and is equivalent to
<code>"none"</code>.
</p>
<p>The <code>"tex"</code> option implements a subset of TeX functionality when
rendering text. This allows the insertion of special glyphs such as Greek
characters or mathematical symbols. The special characters are inserted with
a code following a backslash (\) character, as in the table
<a href="#tab_003aextended">Table 15.1</a>.
</p>
<p>In addition, the formatting of the text can be changed within the string
by using the codes
</p>
<table>
<tr><td width="20%"></td><td width="20%">\bf</td><td width="60%">Bold font</td><td width="20%"></td></tr>
<tr><td width="20%"></td><td width="20%">\it</td><td width="60%">Italic font</td><td width="20%"></td></tr>
<tr><td width="20%"></td><td width="20%">\sl</td><td width="60%">Oblique Font</td><td width="20%"></td></tr>
<tr><td width="20%"></td><td width="20%">\rm</td><td width="60%">Normal font</td><td width="20%"></td></tr>
</table>
<p>These may be used in conjunction with the { and } characters to limit
the change in the font to part of the string. For example,
</p>
<div class="example">
<pre class="example">xlabel ('{\bf H} = a {\bf V}')
</pre></div>
<p>where the character <code>'a'</code> will not appear in a bold font. Note that to
avoid having Octave interpret the backslash characters in the strings,
the strings should be in single quotes.
</p>
<p>It is also possible to change the fontname and size within the text
</p>
<table>
<tr><td width="10%"></td><td width="40%">\fontname{<var>fontname</var>}</td><td width="60%">Specify the font to use</td><td width="10%"></td></tr>
<tr><td width="10%"></td><td width="40%">\fontsize{<var>size</var>}</td><td width="60%">Specify the size of the font to
use</td><td width="10%"></td></tr>
</table>
<p>Finally, superscripting and subscripting can be controlled with the <code>'^'</code>
and <code>'_'</code> characters. If the <code>'^'</code> or <code>'_'</code> is followed by a
{ character, then all of the block surrounded by the { } pair is super- or
sub-scripted. Without the { } pair, only the character immediately following
the <code>'^'</code> or <code>'_'</code> is super- or sub-scripted.
</p>
<div class="float"><a name="tab_003aextended"></a>
<table>
<tr><td width="25%">Greek Lowercase Letters</td></tr>
<tr><td width="25%"></td><td width="25%">\alpha</td><td width="25%">\beta</td><td width="25%">\gamma</td></tr>
<tr><td width="25%"></td><td width="25%">\delta</td><td width="25%">\epsilon</td><td width="25%">\zeta</td></tr>
<tr><td width="25%"></td><td width="25%">\eta</td><td width="25%">\theta</td><td width="25%">\vartheta</td></tr>
<tr><td width="25%"></td><td width="25%">\iota</td><td width="25%">\kappa</td><td width="25%">\lambda</td></tr>
<tr><td width="25%"></td><td width="25%">\mu</td><td width="25%">\nu</td><td width="25%">\xi</td></tr>
<tr><td width="25%"></td><td width="25%">\o</td><td width="25%">\pi</td><td width="25%">\varpi</td></tr>
<tr><td width="25%"></td><td width="25%">\rho</td><td width="25%">\sigma</td><td width="25%">\varsigma</td></tr>
<tr><td width="25%"></td><td width="25%">\tau</td><td width="25%">\upsilon</td><td width="25%">\phi</td></tr>
<tr><td width="25%"></td><td width="25%">\chi</td><td width="25%">\psi</td><td width="25%">\omega</td></tr>
<tr><td width="25%">Greek Uppercase Letters</td></tr>
<tr><td width="25%"></td><td width="25%">\Gamma</td><td width="25%">\Delta</td><td width="25%">\Theta</td></tr>
<tr><td width="25%"></td><td width="25%">\Lambda</td><td width="25%">\Xi</td><td width="25%">\Pi</td></tr>
<tr><td width="25%"></td><td width="25%">\Sigma</td><td width="25%">\Upsilon</td><td width="25%">\Phi</td></tr>
<tr><td width="25%"></td><td width="25%">\Psi</td><td width="25%">\Omega</td><td width="25%"></td></tr>
<tr><td width="25%">Misc Symbols Type Ord</td></tr>
<tr><td width="25%"></td><td width="25%">\aleph</td><td width="25%">\wp</td><td width="25%">\Re</td></tr>
<tr><td width="25%"></td><td width="25%">\Im</td><td width="25%">\partial</td><td width="25%">\infty</td></tr>
<tr><td width="25%"></td><td width="25%">\prime</td><td width="25%">\nabla</td><td width="25%">\surd</td></tr>
<tr><td width="25%"></td><td width="25%">\angle</td><td width="25%">\forall</td><td width="25%">\exists</td></tr>
<tr><td width="25%"></td><td width="25%">\neg</td><td width="25%">\clubsuit</td><td width="25%">\diamondsuit</td></tr>
<tr><td width="25%"></td><td width="25%">\heartsuit</td><td width="25%">\spadesuit</td><td width="25%"></td></tr>
<tr><td width="25%">“Large” Operators</td></tr>
<tr><td width="25%"></td><td width="25%">\int</td></tr>
<tr><td width="25%">Binary Operators</td></tr>
<tr><td width="25%"></td><td width="25%">\pm</td><td width="25%">\cdot</td><td width="25%">\times</td></tr>
<tr><td width="25%"></td><td width="25%">\ast</td><td width="25%">\circ</td><td width="25%">\bullet</td></tr>
<tr><td width="25%"></td><td width="25%">\div</td><td width="25%">\cap</td><td width="25%">\cup</td></tr>
<tr><td width="25%"></td><td width="25%">\vee</td><td width="25%">\wedge</td><td width="25%">\oplus</td></tr>
<tr><td width="25%"></td><td width="25%">\otimes</td><td width="25%">\oslash</td><td width="25%"></td></tr>
<tr><td width="25%">Relations</td></tr>
<tr><td width="25%"></td><td width="25%">\leq</td><td width="25%">\subset</td><td width="25%">\subseteq</td></tr>
<tr><td width="25%"></td><td width="25%">\in</td><td width="25%">\geq</td><td width="25%">\supset</td></tr>
<tr><td width="25%"></td><td width="25%">\supseteq</td><td width="25%">\ni</td><td width="25%">\mid</td></tr>
<tr><td width="25%"></td><td width="25%">\equiv</td><td width="25%">\sim</td><td width="25%">\approx</td></tr>
<tr><td width="25%"></td><td width="25%">\cong</td><td width="25%">\propto</td><td width="25%">\perp</td></tr>
<tr><td width="25%">Arrows</td></tr>
<tr><td width="25%"></td><td width="25%">\leftarrow</td><td width="25%">\Leftarrow</td><td width="25%">\rightarrow</td></tr>
<tr><td width="25%"></td><td width="25%">\Rightarrow</td><td width="25%">\leftrightarrow</td><td width="25%">\uparrow</td></tr>
<tr><td width="25%"></td><td width="25%">\downarrow</td><td width="25%"></td><td width="25%"></td></tr>
<tr><td width="25%">Openings and Closings</td></tr>
<tr><td width="25%"></td><td width="25%">\lfloor</td><td width="25%">\langle</td><td width="25%">\lceil</td></tr>
<tr><td width="25%"></td><td width="25%">\rfloor</td><td width="25%">\rangle</td><td width="25%">\rceil</td></tr>
<tr><td width="25%">Alternate Names</td></tr>
<tr><td width="25%"></td><td width="25%">\neq</td></tr>
<tr><td width="25%">Other</td></tr>
<tr><td width="25%"></td><td width="25%">\ldots</td><td width="25%">\0</td><td width="25%">\copyright</td></tr>
<tr><td width="25%"></td><td width="25%">\deg</td></tr>
</table>
<div class="float-caption"><p><strong>Table 15.1: </strong>Available special characters in TeX mode</p></div></div><div class="float">
</div>
<p>A complete example showing the capabilities of the extended text is
</p>
<div class="example">
<pre class="example">x = 0:0.01:3;
plot (x, erf (x));
hold on;
plot (x,x,"r");
axis ([0, 3, 0, 1]);
text (0.65, 0.6175, strcat ('\leftarrow x = {2/\surd\pi',
' {\fontsize{16}\int_{\fontsize{8}0}^{\fontsize{8}x}}',
' e^{-t^2} dt} = 0.6175'))
</pre></div>
<p>The result of which can be seen in <a href="#fig_003aextendedtext">Figure 15.7</a>
</p>
<div class="float"><a name="fig_003aextendedtext"></a>
<div align="center"><img src="extended.png" alt="extended">
</div>
<div class="float-caption"><p><strong>Figure 15.7: </strong>Example of inclusion of text with the TeX interpreter</p></div></div>
<hr>
<div class="header">
<p>
Next: <a href="Printing-and-Saving-Plots.html#Printing-and-Saving-Plots" accesskey="n" rel="next">Printing and Saving Plots</a>, Previous: <a href="Manipulation-of-Plot-Windows.html#Manipulation-of-Plot-Windows" accesskey="p" rel="prev">Manipulation of Plot Windows</a>, Up: <a href="High_002dLevel-Plotting.html#High_002dLevel-Plotting" accesskey="u" rel="up">High-Level Plotting</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>
</body>
</html>
|
