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Label z-axis
zlabel(txt)
zlabel(txt,Name,Value)
zlabel(ax,___)
h = zlabel(___)
zlabel(
labels
the z-axis of the current axes with the text, txt
)txt
.
Reissuing the zlabel
command causes the new label
to replace the old label.
zlabel(
additionally
specifies the text object properties using one or more txt
,Name,Value
)Name,Value
pair
arguments.
zlabel(
adds the label to the axes specified by ax
,___)ax
. This
syntax allows you to specify the axes to which to add a label. ax
can
precede any of the input argument combinations in the previous syntaxes.
returns the handle to the text object used as the z-axis
label. The handle is useful when making future modifications to the
label.h
= zlabel(___)
Create a multiline label using a multiline cell array.
figure surf(peaks) zlabel({'First Line';'Second Line'})
Use Name,Value
pairs to set the font size, font weight, and text color properties of the z-axis label.
figure surf(peaks) zlabel('Elevation','FontSize',12,... 'FontWeight','bold','Color','r')
'FontSize',12
displays the label text in 12-point font. 'FontWeight','bold'
makes the text bold. 'Color','r'
sets the text color to red.
Create two subplots and return the handles to the axes objects, s(1)
and s(2)
.
figure s(1) = subplot(2,1,1); surf(peaks(30)) s(2) = subplot(2,1,2); surf(peaks(45))
Label the z-axis of each plot by referring to the axes handles, s(1)
and s(2)
.
zlabel(s(1),'Height1') zlabel(s(2),'Height2')
Label the z-axis and return the text object used as the label.
surf(peaks)
t = zlabel('Population Change');
Set the color of the label to red. Starting in R2014b, you can use dot notation to set properties. If you are using an earlier release, use the set
function instead.
t.Color = 'red';
txt
— Axis labelAxis label, specified as a string, character vector, string array, character array, cell array, or numeric value.
Example: 'my label'
Example: {'first
line','second line'}
Example: 123
To include numeric variables with text in a label, use the num2str
function. For example:
x = 42;
txt = ['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 labels:
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 the
same number of characters, such as ['abc'; 'ab ']
.
Use sprintf
to
create text with a new line character, such as sprintf('first
line \n second line')
.
Numeric labels are converted to text using sprintf('%g',value)
.
For example, 12345678
displays as 1.23457e+07
.
The words default
, factory
,
and remove
are reserved words that will not appear
in a label when quoted as a normal characters. To display any of these
words individually, precede them with a backslash, such as '\default'
or '\remove'
.
ax
— Axes objectAxes object. If you do not specify an axes, then the zlabel
function
uses the current axes.
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',12
specifies
red, 12-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 0
Font 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.
Setting the font size properties for the associated axes also
affects the label font size. The label font size updates to equal
the axes font size times the label scale factor. The FontSize
property
of the axes contains the axes font size. The LabelFontSizeMultiplier
property
of the axes contains the label scale factor. By default, the axes
font size is 10 points and the scale factor is 1.1, so the z-axis
label font size is 11 points.
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
'FontWeight'
— Character thickness'normal'
(default) | 'bold'
Character thickness, specified as 'normal'
or
'bold'
.
MATLAB® uses the FontWeight
property to select a font from
those available on your system. Not all fonts have a bold weight. Therefore, specifying
a bold font weight can still result in the normal font weight.
'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[0.15 0.15 0.15]
(default) | RGB triplet | 'r'
| 'g'
| 'b'
| ...Text color, specified as an RGB triplet or one of the color options listed in the table.
For a custom color, specify an RGB triplet. 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]
. Alternatively, you can specify some common colors by
name. This table lists the long and short color name options and the equivalent RGB triplet
values.
Option | Description | Equivalent RGB Triplet |
---|---|---|
'red' or 'r' | Red | [1 0 0] |
'green' or 'g' | Green | [0 1 0] |
'blue' or 'b' | Blue | [0 0 1] |
'yellow' or 'y' | Yellow | [1 1 0] |
'magenta' or 'm' | Magenta | [1 0 1] |
'cyan' or 'c' | Cyan | [0 1 1] |
'white' or 'w' | White | [1 1 1] |
'black' or 'k' | Black | [0 0 0] |
'none' | No color | Not applicable |
Example: 'blue'
Example: [0 0 1]
'Interpreter'
— Interpretation of text characters'tex'
(default) | 'latex'
| 'none'
Interpretation of text characters, 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
property 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 with the Interpreter
property
set to 'tex'
.
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
property
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/.
h
— Text objectText object used as the z-axis label. Use h
to
access and modify properties of the label after its created.
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