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The "tex"
interpreter implements a subset of TeX functionality when
rendering text. This allows the insertion of special glyphs such as Greek
characters or mathematical symbols. Special characters are inserted by using
a backslash (\) character followed by a code, as shown in Table 15.1.
Besides special glyphs, the formatting of the text can be changed within the string by using the codes
\bf | Bold font | ||
\it | Italic font | ||
\sl | Oblique Font | ||
\rm | Normal font |
These codes may be used in conjunction with the { and } characters to limit the change to a part of the string. For example,
xlabel ('{\bf H} = a {\bf V}')
where the character 'a'
will not appear in bold font. Note that to
avoid having Octave interpret the backslash character in the strings,
the strings themselves should be in single quotes.
It is also possible to change the fontname and size within the text
\fontname{fontname} | Specify the font to use | ||
\fontsize{size} | Specify the size of the font to use |
The color of the text may also be changed inline using either a string (e.g., "red") or numerically with a Red-Green-Blue (RGB) specification (e.g., [1 0 0], also red).
\color{color} | Specify the color as a string | ||
\color[rgb]{R G B} | Specify the color numerically |
Finally, superscripting and subscripting can be controlled with the '^'
and '_'
characters. If the '^'
or '_'
is followed by a
{ character, then all of the block surrounded by the { } pair is
superscripted or subscripted. Without the { } pair, only the character
immediately following the '^'
or '_'
is changed.
Greek Lowercase Letters | |||
\alpha | \beta | \gamma | |
\delta | \epsilon | \zeta | |
\eta | \theta | \vartheta | |
\iota | \kappa | \lambda | |
\mu | \nu | \xi | |
\o | \pi | \varpi | |
\rho | \sigma | \varsigma | |
\tau | \upsilon | \phi | |
\chi | \psi | \omega | |
Greek Uppercase Letters | |||
\Gamma | \Delta | \Theta | |
\Lambda | \Xi | \Pi | |
\Sigma | \Upsilon | \Phi | |
\Psi | \Omega | ||
Misc Symbols Type Ord | |||
\aleph | \wp | \Re | |
\Im | \partial | \infty | |
\prime | \nabla | \surd | |
\angle | \forall | \exists | |
\neg | \clubsuit | \diamondsuit | |
\heartsuit | \spadesuit | ||
“Large” Operators | |||
\int | |||
Binary Operators | |||
\pm | \cdot | \times | |
\ast | \circ | \bullet | |
\div | \cap | \cup | |
\vee | \wedge | \oplus | |
\otimes | \oslash | ||
Relations | |||
\leq | \subset | \subseteq | |
\in | \geq | \supset | |
\supseteq | \ni | \mid | |
\equiv | \sim | \approx | |
\cong | \propto | \perp | |
Arrows | |||
\leftarrow | \Leftarrow | \rightarrow | |
\Rightarrow | \leftrightarrow | \uparrow | |
\downarrow | |||
Openings and Closings | |||
\lfloor | \langle | \lceil | |
\rfloor | \rangle | \rceil | |
Alternate Names | |||
\neq | |||
Other | |||
\ldots | \0 | \copyright | |
\deg |
Caution: Degree Symbol
Conformance to both TeX and MATLAB with respect to the \circ
symbol is impossible. While TeX translates this symbol to Unicode 2218
(U+2218), MATLAB maps this to Unicode 00B0 (U+00B0) instead. Octave
has chosen to follow the TeX specification, but has added the additional
symbol \deg
which maps to the degree symbol (U+00B0).
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