Main Content

stem3

Plot 3-D discrete sequence data

  • Plot 3-D discrete sequence data

Description

Vector and Matrix Data

example

stem3(Z) plots entries in Z as stems extending from the xy-plane and terminating with circles at the entry values. The stem locations in the xy-plane are automatically generated.

example

stem3(X,Y,Z) plots entries in Z as stems extending from the xy-plane where X and Y specify the stem locations in the xy-plane. The inputs X, Y, and Z must be vectors or matrices of the same size.

example

stem3(___,"filled") fills the circles. Use this option with any of the input argument combinations in the previous syntaxes.

example

stem3(___,LineSpec) specifies the line style, marker symbol, and color.

Table Data

example

stem3(tbl,xvar,yvar,zvar) plots the variables xvar, yvar, and zvar from the table tbl. Specify one table variable for each dimension. (since R2022b)

Additional Options

example

stem3(___,Name,Value) modifies the stem chart using one or more name-value pair arguments.

example

stem3(ax,___) plots into the axes specified by ax instead of into the current axes (gca). The option, ax, can precede any of the input argument combinations in the previous syntaxes.

example

h = stem3(___) returns the Stem object h.

Examples

collapse all

Create a 3-D stem plot of cosine values between -π/2 and π/2 with a row vector input.

figure
X = linspace(-pi/2,pi/2,40);
Z = cos(X);
stem3(Z)

Figure contains an axes object. The axes object contains an object of type stem.

stem3 plots elements of Z against the same y value at equally space x values.

Create a 3-D stem plot of cosine values between -π/2 and π/2 with a column vector input.

figure
X = linspace(-pi/2,pi/2,40)';
Z = cos(X);
stem3(Z)

Figure contains an axes object. The axes object contains an object of type stem.

stem3 plots elements of Z against the same x value at equally space y values.

Create a 3-D stem plot of sine and cosine values between -π/2 and π/2 with a matrix input.

figure
X = linspace(-pi/2,pi/2,40);
Z = [sin(X); cos(X)];
stem3(Z)

Figure contains an axes object. The axes object contains an object of type stem.

stem3 plots each row of Z against the same y value at equally space x values.

Create a 3-D stem plot and specify the stem locations along a curve. Use view to adjust the angle of the axes in the figure.

figure
X = linspace(-5,5,60);
Y = cos(X);
Z = X.^2;
stem3(X,Y,Z)
view(-8,30)

Figure contains an axes object. The axes object contains an object of type stem.

X and Y determine the stem locations. Z determines the marker heights.

Create a 3-D stem plot with matrix data and specify the stem locations in the xy-plane.

figure
[X,Y] = meshgrid(0:.1:1);
Z = exp(X+Y);
stem3(X,Y,Z)

Figure contains an axes object. The axes object contains an object of type stem.

X and Y determine the stem locations. Z determines the marker heights.

Create a 3-D stem plot of cosine values between -π and π and fill in the markers.

X = linspace(-pi,pi,40);
Z = cos(X);
stem3(Z,'filled')

Figure contains an axes object. The axes object contains an object of type stem.

Create a 3-D stem plot of cosine values between -π and π. Use a dashed line style for the stem, set the marker symbols to stars, and set the color to magenta.

figure
X = linspace(-pi,pi,40);
Z = cos(X);
stem3(Z,'--*m')

Figure contains an axes object. The axes object contains an object of type stem.

To specify only two of the three LineSpec options, omit the third option from the character vector. For example, '*m' sets the marker symbol and the color and uses the default line style.

Create a 3-D stem plot and specify the stem locations along a circle. Set the stem to a dotted line style, the marker symbols to stars, and the color to magenta.

figure
theta = linspace(0,2*pi);
X = cos(theta);
Y = sin(theta);
Z = theta;
stem3(X,Y,Z,':*m')

Figure contains an axes object. The axes object contains an object of type stem.

X and Y determine the stem locations. Z determines the marker heights.

Create a 3-D stem plot of cosine values between -π and π. Set the marker symbols to squares with green faces and magenta edges.

figure
X = linspace(-pi,pi,40);
Z = cos(X);
stem3(Z,'Marker','s',...
     'MarkerEdgeColor','m',...
     'MarkerFaceColor','g')

Figure contains an axes object. The axes object contains an object of type stem.

Since R2022b

A convenient way to plot data from a table is to pass the table to the stem3 function and specify the variables to plot.

Read weather.csv as a timetable tbl. Then display the first three rows of the table.

tbl = readtimetable("weather.csv");
head(tbl,3)
            Time            WindDirection    WindSpeed    Humidity    Temperature    RainInchesPerMinute    CumulativeRainfall    PressureHg    PowerLevel    LightIntensity
    ____________________    _____________    _________    ________    ___________    ___________________    __________________    __________    __________    ______________

    25-Oct-2021 00:00:09         46               1          84          49.2                 0                     0               29.96          4.14             0       
    25-Oct-2021 00:01:09         45             1.6          84          49.2                 0                     0               29.96         4.139             0       
    25-Oct-2021 00:02:09         36             2.2          84          49.2                 0                     0               29.96         4.138             0       

Plot the Time variable on the x-axis, the Temperature variable on the y-axis, and the CumulativeRainfall variable on the z-axis. Return the Stem object as h. Notice that the axis labels match the table variable names.

h = stem3(tbl,"Time","Temperature","CumulativeRainfall");

Figure contains an axes object. The axes object contains an object of type stem.

Change the color of the plot to a shade of red by setting the Color property.

h.Color = [0.7 0 0.2];

Figure contains an axes object. The axes object contains an object of type stem.

Since 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. Create separate stem plots in the axes by specifying the axes object as the first argument to stem3.

X = linspace(-2,2,50);
Y = X.^3;
Z = exp(X);
tiledlayout(2,1)

% Top plot
ax1 = nexttile;
stem(ax1,X,Z)

% Bottom plot
ax2 = nexttile;  
stem3(ax2,X,Y,Z)

Figure contains 2 axes objects. Axes object 1 contains an object of type stem. Axes object 2 contains an object of type stem.

Create a 3-D stem plot and return the stem series object.

X = linspace(0,2);
Y = X.^3;
Z = exp(X).*cos(Y);
h = stem3(X,Y,Z,'filled');

Figure contains an axes object. The axes object contains an object of type stem.

Change the color to magenta and set the marker face color to yellow. Use view to adjust the angle of the axes in the figure. Use dot notation to set properties.

h.Color = 'm';
h.MarkerFaceColor = 'y';
view(-10,35)

Figure contains an axes object. The axes object contains an object of type stem.

Input Arguments

collapse all

Data sequence to display, specified as a vector or matrix. stem3 plots each element in Z as a stem extending from the xy-plane and terminating at the data value.

  • If Z is a row vector, stem3 plots all elements against the same y value at equally spaced x values.

  • If Z is a column vector, stem3 plots all elements against the same x value at equally spaced y values.

  • If Z is a matrix, stem3 plots each row of Z against the same y value at equally spaced x values.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | categorical | datetime | duration

Locations to plot values of Z, specified as a vector or a matrix. Inputs X, Y and Z must be vectors or matrices of the same size.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | categorical | datetime | duration

Locations to plot values of Z, specified as a vector or a matrix. Inputs X, Y and Z must be vectors or matrices of the same size.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64 | logical | categorical | datetime | duration

Line style, marker, and color, specified as a string or character vector containing symbols. The symbols can appear in any order. You do not need to specify all three characteristics (line style, marker, and color). For example, if you omit the line style and specify the marker, then the plot shows only the marker and no line.

Example: "--or" is a red dashed line with circle markers

Line StyleDescriptionResulting Line
"-"Solid line

Sample of solid line

"--"Dashed line

Sample of dashed line

":"Dotted line

Sample of dotted line

"-."Dash-dotted line

Sample of dash-dotted line, with alternating dashes and dots

MarkerDescriptionResulting Marker
"o"Circle

Sample of circle marker

"+"Plus sign

Sample of plus sign marker

"*"Asterisk

Sample of asterisk marker

"."Point

Sample of point marker

"x"Cross

Sample of cross marker

"_"Horizontal line

Sample of horizontal line marker

"|"Vertical line

Sample of vertical line marker

"square"Square

Sample of square marker

"diamond"Diamond

Sample of diamond line marker

"^"Upward-pointing triangle

Sample of upward-pointing triangle marker

"v"Downward-pointing triangle

Sample of downward-pointing triangle marker

">"Right-pointing triangle

Sample of right-pointing triangle marker

"<"Left-pointing triangle

Sample of left-pointing triangle marker

"pentagram"Pentagram

Sample of pentagram marker

"hexagram"Hexagram

Sample of hexagram marker

Color NameShort NameRGB TripletAppearance
"red""r"[1 0 0]

Sample of the color red

"green""g"[0 1 0]

Sample of the color green

"blue""b"[0 0 1]

Sample of the color blue

"cyan" "c"[0 1 1]

Sample of the color cyan

"magenta""m"[1 0 1]

Sample of the color magenta

"yellow""y"[1 1 0]

Sample of the color yellow

"black""k"[0 0 0]

Sample of the color black

"white""w"[1 1 1]

Sample of the color white

Source table containing the data to plot, specified as a table or a timetable.

Table variable containing the z-coordinates, specified using one of the indexing schemes from the table. Specify one variable only.

Indexing SchemeExamples

Variable name:

  • A string scalar or character vector.

  • A pattern object. The pattern object must refer to only one variable.

  • "A" or 'A' — A variable called A

  • "Var"+digitsPattern(1) — The variable with the name "Var" followed by a single digit

Variable index:

  • An index number that refers to the location of a variable in the table.

  • A logical vector. Typically, this vector is the same length as the number of variables, but you can omit trailing 0 or false values.

  • 3 — The third variable from the table

  • [false false true] — The third variable

Variable type:

  • A vartype subscript that selects a table variable of a specified type. The subscript must refer to only one variable.

  • vartype("double") — The variable containing double values

The table variable you specify can contain numeric, logical, categorical, datetime, or duration values.

Example: stem3(tbl,"x","y","z") specifies the table variable named z for the z-coordinates.

Table variable containing the x-coordinates, specified using one of the indexing schemes from the table. Specify one variable only.

Indexing SchemeExamples

Variable name:

  • A string scalar or character vector.

  • A pattern object. The pattern object must refer to only one variable.

  • "A" or 'A' — A variable called A

  • "Var"+digitsPattern(1) — The variable with the name "Var" followed by a single digit

Variable index:

  • An index number that refers to the location of a variable in the table.

  • A logical vector. Typically, this vector is the same length as the number of variables, but you can omit trailing 0 or false values.

  • 3 — The third variable from the table

  • [false false true] — The third variable

Variable type:

  • A vartype subscript that selects a table variable of a specified type. The subscript must refer to only one variable.

  • vartype("double") — The variable containing double values

The table variable you specify can contain numeric, logical, categorical, datetime, or duration values.

Example: stem3(tbl,"x","y","z") specifies the table variable named x for the x-coordinates.

Table variable containing the y-coordinates, specified using one of the indexing schemes from the table. Specify one variable only.

Indexing SchemeExamples

Variable name:

  • A string scalar or character vector.

  • A pattern object. The pattern object must refer to only one variable.

  • "A" or 'A' — A variable called A

  • "Var"+digitsPattern(1) — The variable with the name "Var" followed by a single digit

Variable index:

  • An index number that refers to the location of a variable in the table.

  • A logical vector. Typically, this vector is the same length as the number of variables, but you can omit trailing 0 or false values.

  • 3 — The third variable from the table

  • [false false true] — The third variable

Variable type:

  • A vartype subscript that selects a table variable of a specified type. The subscript must refer to only one variable.

  • vartype("double") — The variable containing double values

The table variable you specify can contain numeric, logical, categorical, datetime, or duration values.

Example: stem3(tbl,"x","y","z") specifies the table variable named y for the y-coordinates.

Axes object. If you do not specify the axes, then stem plots into the current axes.

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: "LineStyle",":","MarkerFaceColor","red" plots the stem as a dotted line and sets the marker face color to red.

The properties listed here are only a subset. For a complete list, see Stem Properties.

Line style, specified as one of the options listed in this table.

Line StyleDescriptionResulting Line
"-"Solid line

Sample of solid line

"--"Dashed line

Sample of dashed line

":"Dotted line

Sample of dotted line

"-."Dash-dotted line

Sample of dash-dotted line, with alternating dashes and dots

"none"No lineNo line

Line width of stem and marker edge, specified as a positive value in point units.

Example: 0.75

Stem color, specified as an RGB triplet, a hexadecimal color code, a color name, or a short name.

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. Therefore, 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 NameShort NameRGB TripletHexadecimal Color CodeAppearance
"red""r"[1 0 0]"#FF0000"

Sample of the color red

"green""g"[0 1 0]"#00FF00"

Sample of the color green

"blue""b"[0 0 1]"#0000FF"

Sample of the color blue

"cyan" "c"[0 1 1]"#00FFFF"

Sample of the color cyan

"magenta""m"[1 0 1]"#FF00FF"

Sample of the color magenta

"yellow""y"[1 1 0]"#FFFF00"

Sample of the color yellow

"black""k"[0 0 0]"#000000"

Sample of the color black

"white""w"[1 1 1]"#FFFFFF"

Sample of the color white

"none"Not applicableNot applicableNot applicableNo color

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB® uses in many types of plots.

RGB TripletHexadecimal Color CodeAppearance
[0 0.4470 0.7410]"#0072BD"

Sample of RGB triplet [0 0.4470 0.7410], which appears as dark blue

[0.8500 0.3250 0.0980]"#D95319"

Sample of RGB triplet [0.8500 0.3250 0.0980], which appears as dark orange

[0.9290 0.6940 0.1250]"#EDB120"

Sample of RGB triplet [0.9290 0.6940 0.1250], which appears as dark yellow

[0.4940 0.1840 0.5560]"#7E2F8E"

Sample of RGB triplet [0.4940 0.1840 0.5560], which appears as dark purple

[0.4660 0.6740 0.1880]"#77AC30"

Sample of RGB triplet [0.4660 0.6740 0.1880], which appears as medium green

[0.3010 0.7450 0.9330]"#4DBEEE"

Sample of RGB triplet [0.3010 0.7450 0.9330], which appears as light blue

[0.6350 0.0780 0.1840]"#A2142F"

Sample of RGB triplet [0.6350 0.0780 0.1840], which appears as dark red

Example: "blue"

Example: [0 0 1]

Example: "#0000FF"

Marker symbol, specified as one of the markers listed in this table.

MarkerDescriptionResulting Marker
"o"Circle

Sample of circle marker

"+"Plus sign

Sample of plus sign marker

"*"Asterisk

Sample of asterisk marker

"."Point

Sample of point marker

"x"Cross

Sample of cross marker

"_"Horizontal line

Sample of horizontal line marker

"|"Vertical line

Sample of vertical line marker

"square"Square

Sample of square marker

"diamond"Diamond

Sample of diamond line marker

"^"Upward-pointing triangle

Sample of upward-pointing triangle marker

"v"Downward-pointing triangle

Sample of downward-pointing triangle marker

">"Right-pointing triangle

Sample of right-pointing triangle marker

"<"Left-pointing triangle

Sample of left-pointing triangle marker

"pentagram"Pentagram

Sample of pentagram marker

"hexagram"Hexagram

Sample of hexagram marker

"none"No markersNot applicable

Example: "+"

Example: "diamond"

Marker size, specified as a positive value in points, where 1 point = 1/72 of an inch.

Marker outline color, specified as "auto", an RGB triplet, a hexadecimal color code, a color name, or a short name. The default value of "auto" uses the same color as the Color property.

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. Therefore, 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 NameShort NameRGB TripletHexadecimal Color CodeAppearance
"red""r"[1 0 0]"#FF0000"

Sample of the color red

"green""g"[0 1 0]"#00FF00"

Sample of the color green

"blue""b"[0 0 1]"#0000FF"

Sample of the color blue

"cyan" "c"[0 1 1]"#00FFFF"

Sample of the color cyan

"magenta""m"[1 0 1]"#FF00FF"

Sample of the color magenta

"yellow""y"[1 1 0]"#FFFF00"

Sample of the color yellow

"black""k"[0 0 0]"#000000"

Sample of the color black

"white""w"[1 1 1]"#FFFFFF"

Sample of the color white

"none"Not applicableNot applicableNot applicableNo color

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.

RGB TripletHexadecimal Color CodeAppearance
[0 0.4470 0.7410]"#0072BD"

Sample of RGB triplet [0 0.4470 0.7410], which appears as dark blue

[0.8500 0.3250 0.0980]"#D95319"

Sample of RGB triplet [0.8500 0.3250 0.0980], which appears as dark orange

[0.9290 0.6940 0.1250]"#EDB120"

Sample of RGB triplet [0.9290 0.6940 0.1250], which appears as dark yellow

[0.4940 0.1840 0.5560]"#7E2F8E"

Sample of RGB triplet [0.4940 0.1840 0.5560], which appears as dark purple

[0.4660 0.6740 0.1880]"#77AC30"

Sample of RGB triplet [0.4660 0.6740 0.1880], which appears as medium green

[0.3010 0.7450 0.9330]"#4DBEEE"

Sample of RGB triplet [0.3010 0.7450 0.9330], which appears as light blue

[0.6350 0.0780 0.1840]"#A2142F"

Sample of RGB triplet [0.6350 0.0780 0.1840], which appears as dark red

Marker fill color, specified as "auto", an RGB triplet, a hexadecimal color code, a color name, or a short name. The "auto" option uses the same color as the Color property of the parent axes. If you specify "auto" and the axes plot box is invisible, the marker fill color is the color of the figure.

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. Therefore, 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 NameShort NameRGB TripletHexadecimal Color CodeAppearance
"red""r"[1 0 0]"#FF0000"

Sample of the color red

"green""g"[0 1 0]"#00FF00"

Sample of the color green

"blue""b"[0 0 1]"#0000FF"

Sample of the color blue

"cyan" "c"[0 1 1]"#00FFFF"

Sample of the color cyan

"magenta""m"[1 0 1]"#FF00FF"

Sample of the color magenta

"yellow""y"[1 1 0]"#FFFF00"

Sample of the color yellow

"black""k"[0 0 0]"#000000"

Sample of the color black

"white""w"[1 1 1]"#FFFFFF"

Sample of the color white

"none"Not applicableNot applicableNot applicableNo color

Here are the RGB triplets and hexadecimal color codes for the default colors MATLAB uses in many types of plots.

RGB TripletHexadecimal Color CodeAppearance
[0 0.4470 0.7410]"#0072BD"

Sample of RGB triplet [0 0.4470 0.7410], which appears as dark blue

[0.8500 0.3250 0.0980]"#D95319"

Sample of RGB triplet [0.8500 0.3250 0.0980], which appears as dark orange

[0.9290 0.6940 0.1250]"#EDB120"

Sample of RGB triplet [0.9290 0.6940 0.1250], which appears as dark yellow

[0.4940 0.1840 0.5560]"#7E2F8E"

Sample of RGB triplet [0.4940 0.1840 0.5560], which appears as dark purple

[0.4660 0.6740 0.1880]"#77AC30"

Sample of RGB triplet [0.4660 0.6740 0.1880], which appears as medium green

[0.3010 0.7450 0.9330]"#4DBEEE"

Sample of RGB triplet [0.3010 0.7450 0.9330], which appears as light blue

[0.6350 0.0780 0.1840]"#A2142F"

Sample of RGB triplet [0.6350 0.0780 0.1840], which appears as dark red

Output Arguments

collapse all

Stem object. This is a unique identifier, which you can use to modify the properties of the Stem object after it is created.

Extended Capabilities

Version History

Introduced before R2006a

expand all