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مهندسی مکانیک و هوافضا - Greek Letters and Special Characters in Graph Text
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Greek Letters and Special Characters in Graph Text

Create a simple line plot and add a title to the graph. Include the Greek letter $\pi$ in the title by using the TeX markup \pi.

x = linspace(0,2*pi);
y = sin(x);
plot(x,y)
title('x ranges from 0 to 2\pi')

Include Superscripts and Annotations in Graph Text

Create a line plot and add a title and axis labels to the graph. Display a superscript in the title using the ^ character. The ^ character modifies the character immediately following it. Include multiple characters in the superscript by enclosing them in curly braces {}. Include the Greek letters $\alpha$ and $\mu$ in the text using the TeX markups \alpha and \mu, respectively.

t = 1:900;
y = 0.25*exp(-0.005*t);

figure
plot(t,y)
title('Ae^{\alphat} for A = 0.25 and \alpha = -0.0005')
xlabel('Time \musec')
ylabel('Amplitude')

Add text at the data point where t = 300. Use the TeX markup \bullet to add a marker to the specified point and use \leftarrow to include an arrow pointing to the left. By default, the specified data point is to the left of the text.

txt = '\bullet \leftarrow 0.25t e^{-0.005t} at t = 300';
text(t(300),y(300),txt)

TeX Markup Options

MATLAB® supports a subset of TeX markup. Use TeX markup to add superscripts and subscripts, modify the text type and color, and include special characters in the text string. MATLAB interprets text strings using TeX markup as long as the Interpreter property of the text object is set to 'tex' (the default).

This table lists the supported modifiers with the Interpreter property set to 'tex'. Modifiers remain in effect until the end of the text. Superscripts and subscripts are an exception because they only modify the next character or the characters within the curly braces.

ModifierDescriptionExample
^{ }Superscript'text^{superscript}'
_{ }Subscript'text_{subscript}'
\bfBold font'\bf text'
\itItalic font'\it text'
\slOblique font (usually the same as italic font)'\sl text'
\rmNormal font'\rm text'
\fontname{specifier}Font name — Set specifier as the name of a font family. You can use this in combination with other modifiers.'\fontname{Courier} text'
\fontsize{specifier}Font size — Set specifier as a numeric scalar value in point units to change the font size.'\fontsize{15} text'
\color{specifier}Font color — Set specifer as one of these colors: redgreen,yellowmagentablueblackwhitegraydarkGreenorange, orlightBlue.'\color{magenta} text'
\color[rgb]{specifier}Custom font color — Set specifier as a three-element RGB triplet.'\color[rgb]{0,0.5,0.5} text'

This table lists the supported special characters with the Interpreter property set to 'tex'.

Character SequenceSymbolCharacter SequenceSymbolCharacter SequenceSymbol

\alpha

α

\upsilon

υ

\sim

~

\angle

\phi

Φ

\leq

\ast

*

\chi

χ

\infty

\beta

β

\psi

ψ

\clubsuit

\gamma

γ

\omega

ω

\diamondsuit

\delta

δ

\Gamma

Γ

\heartsuit

\epsilon

ɛ

\Delta

Δ

\spadesuit

\zeta

ζ

\Theta

Θ

\leftrightarrow

\eta

η

\Lambda

Λ

\leftarrow

\theta

Θ

\Xi

Ξ

\Leftarrow

\vartheta

ϑ

\Pi

Π

\uparrow

\iota

ι

\Sigma

Σ

\rightarrow

\kappa

κ

\Upsilon

ϒ

\Rightarrow

\lambda

λ

\Phi

Φ

\downarrow

\mu

µ

\Psi

Ψ

\circ

º

\nu

ν

\Omega

Ω

\pm

±

\xi

ξ

\forall

\geq

\pi

π

\exists

\propto

\rho

ρ

\ni

\partial

\sigma

σ

\cong

\bullet

\varsigma

ς

\approx

\div

÷

\tau

τ

\Re

\neq

\equiv

\oplus

\aleph

\Im

\cup

\wp

\otimes

\subseteq

\oslash

\cap

\in

\supseteq

\supset

\lceil

\subset

\int

\cdot

·

\o

ο

\rfloor

\neg

¬

\nabla

\lfloor

\times

x

\ldots

...

\perp

\surd

\prime

´

\wedge

\varpi

ϖ

\0

\rceil

\rangle

\mid

|

\vee

\langle

\copyright

©

See Also



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