Add title
title(
adds the
specified title to the axes or chart returned by the txt
)gca
command.
Reissuing the title
command causes the new title
to replace the old title.
title(___,
modifies
the title appearance using one or more name-value pair arguments.
For example, Name,Value
)'FontSize',12
sets the font size to
12 points. Specify name-value pair arguments after all other input
arguments. Modifying the title appearance is not supported for all
types of charts.
Create a figure and display a title in the current axes.
plot((1:10).^2)
title('My Title')
You also can call title
with a function that returns text. For example, the date
function returns text with today's date.
title(date)
MATLAB® sets the output of date
as the axes title.
Include the value of variable c
in a title.
figure plot((1:10).^2) f = 70; c = (f-32)/1.8; title(['Temperature is ',num2str(c),' C'])
Use the color modifier \color
to change the color of characters following it from the previous color.
plot((1:10).^2) title(['\fontsize{16}black {\color{magenta}magenta '... '\color[rgb]{0 .5 .5}teal \color{red}red} black again'])
Use the Name,Value
pair 'Color','m'
to set the color of the title to magenta.
figure plot((1:10).^2) title('Case number # 3','Color', 'm')
Use TeX markup to include Greek symbols in a title.
t = (0:0.01:0.2); y = exp(-25*t); figure plot(t,y) title('y = \ite^{\lambda t}','Color','b')
The 'Interpreter'
property must be 'tex'
(the default).
figure
plot((1:10).^2)
title('\alpha^2 and X_1')
The superscript character, "^", and the subscript character, "_", modify the character or substring defined in braces immediately following.
Create a multiline title using a multiline cell array.
figure plot((1:10).^2) title({'First line';'Second line'})
Set the Interpreter
property as 'none'
so that the text X_1
is displayed in the figure as typed, without making 1
a subscript of X
.
plot((1:10).^2) title('X_1','Interpreter','none')
Starting in R2019b, you can display a tiling of plots using the tiledlayout
and nexttile
functions. Call the tiledlayout
function to create a 2-by-1 tiled chart layout. Call the nexttile
function to create the axes objects ax1
and ax2
. Then plot data into each axes.
tiledlayout(2,1) ax1 = nexttile; plot(ax1,(1:10).^2) ax2 = nexttile; plot(ax2,(1:10).^3)
Add a title to each axes by passing ax1
and ax2
to the title
function.
title(ax1,'Top Plot') title(ax2,'Bottom Plot')
Add a title to a plot and return the text object.
plot((1:10).^2)
t = title('My Title');
Set the color of the title to red. Use dot notation to set properties.
t.Color = 'red';
txt
— Text to display as titleText to display as title, specified as a string scalar, character vector, string array, character array, cell array, categorical array, or numeric value.
Example: 'my label'
Example: {'first
line','second line'}
Example: 123
To include numeric variables with text in a title, use the num2str
function. For example:
x = 42;
str = ['The value is ',num2str(x)];
To include special characters, such as superscripts, subscripts,
Greek letters, or mathematical symbols, use TeX markup. For a list
of supported markup, see the Interpreter
property.
To create multiline titles:
Use a string array where each element contains a line of text,
such as ["first line", "second line"]
.
Use a cell array where each cell contains a line of
text, such as {'first line','second line'}
.
Use a character array where each row contains a line
of text, such as ['abc'; 'ab ']
. If you use this
technique, each row must have the same number of characters.
Use sprintf
to
create a character vector with a new line character, such as sprintf('first
line \n second line')
.
Numeric titles are converted to text using sprintf('%g',value)
.
For example, 12345678
displays as 1.23457e+07
.
If you specify the label as a categorical array, MATLAB® uses the values in the array, not the categories.
The words default
,
factory
, and remove
are reserved words that will not appear in a title when quoted
as a normal character vector. To display any of these words
individually, precede them with a backslash, such as
'\default'
or
'\remove'
.
target
— Target for titleTarget for the title, specified as one of the following:
Any type of axes: an Axes
,
PolarAxes
, or GeographicAxes
object.
A Legend
object.
A TiledChartLayout
object.
A chart object that has a Title
property.
For example, you can add a title to a HeatmapChart
object.
An array of graphics objects from the preceding list. The
objects must belong to the same class. To determine the class,
use the class
function.
If you do not specify the target for the title, then the title
function
adds the title to the graphics object returned by the gca
command.
Some charts do not support modifying the title appearance, such as the color, or returning the text object as an output argument.
Specify optional
comma-separated pairs of Name,Value
arguments. Name
is
the argument name and Value
is the corresponding value.
Name
must appear inside quotes. You can specify several name and value
pair arguments in any order as
Name1,Value1,...,NameN,ValueN
.
'Color','red','FontSize',14
adds
a title with red, 14-point font.In addition to the following, you can specify other text object
properties using Name,Value
pair arguments. See Text Properties.
'FontSize'
— Font size11
(default) | scalar value greater than 0Font size, specified as a scalar value greater than 0
in
point units. One point equals 1/72 inch. To change the font units,
use the FontUnits
property.
If you add a title to an axes object, then the font size properties
for the axes also affect the title font size. The title font size
updates to equal the axes font size multiplied by the title scale
factor. The FontSize
property of the axes contains
the axes font size. The TitleFontSizeMultiplier
property of the
axes contains the scale factor. By default, the axes font size is
10 points and the scale factor is 1.1, so the title font size is 11
points.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
'FontWeight'
— Thickness of text characters'bold'
(default) | 'normal'
Thickness of the text characters, specified as one of these values:
'bold'
— Thicker characters
outlines than normal
'normal'
— Normal weight
as defined by the particular font
MATLAB uses the FontWeight
property
to select a font from those available on your system. Not all fonts
have a bold font weight. Therefore, specifying a bold font weight
could still result in the normal font weight.
If you add a title to an axes object, then the TitleFontWeight
property for the associated axes affects
the FontWeight
value for the title.
The 'light'
and 'demi'
font
weight values have been removed. Use 'normal'
instead.
'FontName'
— Font name'FixedWidth'
Font name, specified as a supported font name or 'FixedWidth'
. To display
and print text properly, you must choose a font that your system supports. The default
font depends on your operating system and locale.
To use a fixed-width font that looks good in any locale, use 'FixedWidth'
.
The fixed-width font relies on the root FixedWidthFontName
property. Setting the root FixedWidthFontName
property causes an
immediate update of the display to use the new font.
'Color'
— Text color[0 0 0]
(default) | RGB triplet | hexadecimal color code | 'r'
| 'g'
| 'b'
| ...Text color, specified as an RGB triplet, a hexadecimal color code, a color name, or a short
name. The default value of [0 0 0]
corresponds to black.
For a custom color, specify an RGB triplet or a hexadecimal color code.
An RGB triplet is a three-element row vector whose elements
specify the intensities of the red, green, and blue
components of the color. The intensities must be in the
range [0,1]
; for example, [0.4
0.6 0.7]
.
A hexadecimal color code is a character vector or a string
scalar that starts with a hash symbol (#
)
followed by three or six hexadecimal digits, which can range
from 0
to F
. The
values are not case sensitive. Thus, the color codes
'#FF8800'
,
'#ff8800'
,
'#F80'
, and
'#f80'
are equivalent.
Alternatively, you can specify some common colors by name. This table lists the named color options, the equivalent RGB triplets, and hexadecimal color codes.
Color Name | Short Name | RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|---|---|
'red' | 'r' | [1 0 0] | '#FF0000' | |
'green' | 'g' | [0 1 0] | '#00FF00' | |
'blue' | 'b' | [0 0 1] | '#0000FF' | |
'cyan'
| 'c' | [0 1 1] | '#00FFFF' | |
'magenta' | 'm' | [1 0 1] | '#FF00FF' | |
'yellow' | 'y' | [1 1 0] | '#FFFF00' | |
'black' | 'k' | [0 0 0] | '#000000' | |
'white' | 'w' | [1 1 1] | '#FFFFFF' | |
'none' | Not applicable | Not applicable | Not applicable | No color |
Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.
RGB Triplet | Hexadecimal Color Code | Appearance |
---|---|---|
[0 0.4470 0.7410] | '#0072BD' | |
[0.8500 0.3250 0.0980] | '#D95319' | |
[0.9290 0.6940 0.1250] | '#EDB120' | |
[0.4940 0.1840 0.5560] | '#7E2F8E' | |
[0.4660 0.6740 0.1880] | '#77AC30' | |
[0.3010 0.7450 0.9330] | '#4DBEEE' | |
[0.6350 0.0780 0.1840] | '#A2142F' |
Example: 'blue'
Example: [0
0 1]
Example: '#0000FF'
'Interpreter'
— Text interpreter'tex'
(default) | 'latex'
| 'none'
Text interpreter, specified as one of these values:
'tex'
— Interpret characters using a subset of
TeX markup.
'latex'
— Interpret characters using LaTeX
markup.
'none'
— Display literal characters.
By default, MATLAB supports a subset of TeX markup. Use TeX markup to add superscripts and subscripts, modify the font type and color, and include special characters in the text.
Modifiers remain in effect until the end of the text.
Superscripts and subscripts are an exception because they modify only the next character or the
characters within the curly braces. When you set the interpreter to 'tex'
,
the supported modifiers are as follows.
Modifier | Description | Example |
---|---|---|
^{ } | Superscript | 'text^{superscript}' |
_{ } | Subscript | 'text_{subscript}' |
\bf | Bold font | '\bf text' |
\it | Italic font | '\it text' |
\sl | Oblique font (usually the same as italic font) | '\sl text' |
\rm | Normal font | '\rm text' |
\fontname{ | Font name — Replace
with the name of
a font family. You can use this in combination with other modifiers. | '\fontname{Courier} text' |
\fontsize{ | Font size —Replace
with a numeric
scalar value in point units. | '\fontsize{15} text' |
\color{ | Font color — Replace
with one of
these colors: red , green ,
yellow , magenta ,
blue , black ,
white , gray ,
darkGreen , orange , or
lightBlue . | '\color{magenta} text' |
\color[rgb]{specifier} | Custom font color — Replace
with a
three-element RGB triplet. | '\color[rgb]{0,0.5,0.5} text' |
This table lists the supported special characters for the
'tex'
interpreter.
Character Sequence | Symbol | Character Sequence | Symbol | Character Sequence | Symbol |
---|---|---|---|---|---|
| α |
| υ |
| ~ |
| ∠ |
|
| ≤ | |
|
|
| χ |
| ∞ |
| β |
| ψ |
| ♣ |
| γ |
| ω |
| ♦ |
| δ |
| Γ |
| ♥ |
| ϵ |
| Δ |
| ♠ |
| ζ |
| Θ |
| ↔ |
| η |
| Λ |
| ← |
| θ |
| Ξ |
| ⇐ |
| ϑ |
| Π |
| ↑ |
| ι |
| Σ |
| → |
| κ |
| ϒ |
| ⇒ |
| λ |
| Φ |
| ↓ |
| µ |
| Ψ |
| º |
| ν |
| Ω |
| ± |
| ξ |
| ∀ |
| ≥ |
| π |
| ∃ |
| ∝ |
| ρ |
| ∍ |
| ∂ |
| σ |
| ≅ |
| • |
| ς |
| ≈ |
| ÷ |
| τ |
| ℜ |
| ≠ |
| ≡ |
| ⊕ |
| ℵ |
| ℑ |
| ∪ |
| ℘ |
| ⊗ |
| ⊆ |
| ∅ |
| ∩ |
| ∈ |
| ⊇ |
| ⊃ |
| ⌈ |
| ⊂ |
| ∫ |
| · |
| ο |
| ⌋ |
| ¬ |
| ∇ |
| ⌊ |
| x |
| ... |
| ⊥ |
| √ |
| ´ |
| ∧ |
| ϖ |
| ∅ |
| ⌉ |
| 〉 |
| | |
| ∨ |
| 〈 |
| © |
To use LaTeX markup, set the interpreter to 'latex'
. Use dollar
symbols around the text, for example, use '$\int_1^{20} x^2 dx$'
for inline mode or '$$\int_1^{20} x^2 dx$$'
for display
mode.
The displayed text uses the default LaTeX font style. The
FontName
, FontWeight
, and
FontAngle
properties do not have an effect. To change the
font style, use LaTeX markup.
The maximum size of the text that you can use with the LaTeX interpreter is 1200 characters. For multiline text, this reduces by about 10 characters per line.
For more information about the LaTeX system, see The LaTeX Project website at https://www.latex-project.org/.
t
— Object used for title textObject used for the title text, returned as one of these types of objects:
Text object — If you add a title to axes, then title
returns
a text object. Use this text object to access and modify properties
of the title after it is created. For a list of text object properties,
see Text Properties. You also
can access the title through the Title
property of the axes
object.
Legend text object — If you add a title to
a legend, then title
returns a legend text object.
Use this legend text object to access and modify properties of the
title after it is created. For a list of legend text object properties,
see Text Properties.
You also can access the title through the Title
property
of the legend object.
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