Scatter plot - MATLAB scatter - MathWorks France (2024)

Table of Contents
Syntax Description Vector and Matrix Data Table Data Additional Options Examples Create Scatter Plot Vary Circle Size Vary Circle Color Vary Color Palette Fill the Markers Specify Marker Symbol Change Marker Color and Line Width Vary Transparency Across Data Points Plot Data from a Table Plot Table Data with Custom Colors and Marker Sizes Specify Target Axes and Marker Type Modify Scatter Series After Creation Input Arguments x — x-coordinates scalar | vector | matrix y — y-coordinates scalar | vector | matrix sz — Marker size 36 (default) | numeric scalar | row or column vector | matrix | [] c — Marker color color name | RGB triplet | matrix of RGB triplets | vector of colormap indices mkr — Marker symbol "o" (default) | "+" | "*" | "." | "x" | ... "filled" — Option to fill interior of markers "filled" tbl — Source table table | timetable xvar — Table variables containing x-coordinatesone or more table variable indices yvar — Table variables containing y-coordinates one or more table variable indices ax — Target axes Axes object | PolarAxes object | GeographicAxes object Name-Value Arguments ColorVariable — Table variable containing color data table variable index Output Arguments s — Scatter object Scatter object | array of Scatter objects Extended Capabilities Tall Arrays Calculate with arrays that have more rows than fit in memory. GPU Arrays Accelerate code by running on a graphics processing unit (GPU) using Parallel Computing Toolbox™. Distributed ArraysPartition large arrays across the combined memory of your cluster using Parallel Computing Toolbox™. Version History R2022b: Plots created with tables preserve special characters in axis and legend labels R2021b: Pass tables directly to scatter See Also Functions Properties Topics External Websites Commande MATLAB Americas Europe Asia Pacific FAQs

Scatter plot

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  • Scatter plot - MATLAB scatter- MathWorks France (1)

Syntax

scatter(x,y)

scatter(x,y,sz)

scatter(x,y,sz,c)

scatter(___,"filled")

scatter(___,mkr)

scatter(tbl,xvar,yvar)

scatter(tbl,xvar,yvar,"filled")

scatter(ax,___)

scatter(___,Name,Value)

s = scatter(___)

Description

Vector and Matrix Data

example

scatter(x,y) creates a scatter plot with circular markers at the locations specified by the vectors x and y.

  • To plot one set of coordinates, specify x and y as vectors of equal length.

  • To plot multiple sets of coordinates on the same set of axes, specify at least one of x or y as a matrix.

example

scatter(x,y,sz) specifies the circle sizes. To use the same size for all the circles, specify sz as a scalar. To plot each circle with a different size, specify sz as a vector or a matrix.

example

scatter(x,y,sz,c) specifies the circle colors. You can specify one color for all the circles, or you can vary the color. For example, you can plot all red circles by specifying c as "red".

example

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

example

scatter(___,mkr) specifiesthe marker type.

Table Data

example

scatter(tbl,xvar,yvar) plots the variables xvar and yvar from the table tbl. To plot one data set, specify one variable for xvar and one variable for yvar. To plot multiple data sets, specify multiple variables for xvar, yvar, or both. If both arguments specify multiple variables, they must specify the same number of variables. (Since R2021b)

example

scatter(tbl,xvar,yvar,"filled") plots the specified variables from the table with filled circles. (Since R2021b)

Additional Options

example

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

example

scatter(___,Name,Value) modifies the scatter plot using one or more name-value arguments to set properties. For example:

  • scatter(x,y,"LineWidth",2) creates a scatter plot with 2-point marker outlines.

  • scatter(tbl,"MyX","MyY","ColorVariable","MyColors") creates a scatter plot from data in a table, and customizes the marker colors using data from the table.

For a full list of properties, see Scatter Properties.

example

s = scatter(___) returns the Scatter object or an array of Scatter objects. Use s to set properties after creating the plot. For a full list of properties, see Scatter Properties.

Examples

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Create Scatter Plot

Open Live Script

Create x as 200 equally spaced values between 0 and 3π. Create y as cosine values with random noise. Then, create a scatter plot.

x = linspace(0,3*pi,200);y = cos(x) + rand(1,200); scatter(x,y)

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Vary Circle Size

Open Live Script

Create a scatter plot using circles with different sizes. Specify the size in points squared

x = linspace(0,3*pi,200);y = cos(x) + rand(1,200);sz = linspace(1,100,200);scatter(x,y,sz)

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Corresponding elements in x, y, and sz determine the location and size of each circle. To plot all circles with the equal area, specify sz as a numeric scalar.

Vary Circle Color

Open Live Script

Create a scatter plot and vary the circle color.

x = linspace(0,3*pi,200);y = cos(x) + rand(1,200);c = linspace(1,10,length(x));scatter(x,y,[],c)

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Corresponding elements in x, y, and c determine the location and color of each circle. The scatter function maps the elements in c to colors in the current colormap.

Vary Color Palette

Since R2023b

Named color palettes provide a convenient way to change the colors of a chart. This example compares a scatter plot with three different color palettes.

Create a scatter plot of random numbers using the default palette.

x = rand(50,5);y = randn(50,5) + (5:5:25);scatter(x,y,"filled")

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Change the color palette to reef by using colororder function.

colororder("reef")

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Change the color palette to meadow.

colororder("meadow")

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Fill the Markers

Open Live Script

Create a scatter plot and fill in the markers. scatter fills each marker using the color of the marker edge.

x = linspace(0,3*pi,200);y = cos(x) + rand(1,200);sz = 25;c = linspace(1,10,length(x));scatter(x,y,sz,c,'filled')

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Specify Marker Symbol

Open Live Script

Create vectors x and y as sine and cosine values with random noise. Then, create a scatter plot and use diamond markers with an area of 140 points squared.

theta = linspace(0,2*pi,150);x = sin(theta) + 0.75*rand(1,150);y = cos(theta) + 0.75*rand(1,150); sz = 140;scatter(x,y,sz,'d')

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Change Marker Color and Line Width

Open Live Script

Create vectors x and y as sine and cosine values with random noise. Create a scatter plot and set the marker edge color, marker face color, and line width.

theta = linspace(0,2*pi,300);x = sin(theta) + 0.75*rand(1,300);y = cos(theta) + 0.75*rand(1,300); sz = 40;scatter(x,y,sz,'MarkerEdgeColor',[0 .5 .5],... 'MarkerFaceColor',[0 .7 .7],... 'LineWidth',1.5)

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Vary Transparency Across Data Points

Open Live Script

You can vary the transparency of scattered points by setting the AlphaData property to a vector of different opacity values. To ensure the scatter plot uses the AlphaData values, set the MarkerFaceAlpha property to 'flat'.

Create a set of normally distributed random numbers. Then create a scatter plot of the data with filled markers.

x = randn(1000,1);y = randn(1000,1);s = scatter(x,y,'filled');

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Set the opacity of each point according to its distance from zero.

distfromzero = sqrt(x.^2 + y.^2);s.AlphaData = distfromzero;s.MarkerFaceAlpha = 'flat';

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Plot Data from a Table

Open Live Script

Since R2021b

A convenient way to plot data from a table is to pass the table to the scatter function and specify the variables you want to plot. For example, read patients.xls as a table tbl. Plot the relationship between the Systolic and Diastolic variables by passing tbl as the first argument to the scatter function followed by the variable names. Notice that the axis labels match the variable names.

tbl = readtable('patients.xls');scatter(tbl,'Systolic','Diastolic');

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You can also plot multiple variables at the same time. For example, plot both blood pressure variables versus the Weight variable by specifying the yvar argument as the cell array {'Systolic','Diastolic'}. Add a legend, and notice that the legend labels match the variable names.

scatter(tbl,'Weight',{'Systolic','Diastolic'});legend

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Plot Table Data with Custom Colors and Marker Sizes

Open Live Script

Since R2021b

One way to plot data from a table and customize the colors and marker sizes is to set the ColorVariable and SizeData properties. You can set these properties as name-value arguments when you call the scatter function, or you can set them on the Scatter object later.

For example, read patients.xls as a table tbl. Plot the Height variable versus the Weight variable with filled markers. Vary the marker colors by specifying the ColorVariable name-value argument. Return the Scatter object as s, so you can set other properties later.

tbl = readtable('patients.xls');s = scatter(tbl,'Weight','Height','filled','ColorVariable','Diastolic');

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Change the marker sizes to 100 points by setting the SizeData property. Then add a colorbar.

s.SizeData = 100;colorbar

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Specify Target Axes and Marker Type

Open Live Script

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. Plot scattered data into each axes. In the bottom scatter plot, specify diamond filled diamond markers.

x = linspace(0,3*pi,200);y = cos(x) + rand(1,200);tiledlayout(2,1)% Top plotax1 = nexttile;scatter(ax1,x,y)% Bottom plotax2 = nexttile;scatter(ax2,x,y,'filled','d')

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Modify Scatter Series After Creation

Open Live Script

Create a scatter plot and return the scatter series object, s.

theta = linspace(0,1,500);x = exp(theta).*sin(100*theta);y = exp(theta).*cos(100*theta);s = scatter(x,y);

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Use s to query and set properties of the scatter series after it has been created. Set the line width to 0.6 point. Set the marker edge color to blue. Set the marker face color using an RGB triplet color.

s.LineWidth = 0.6;s.MarkerEdgeColor = 'b';s.MarkerFaceColor = [0 0.5 0.5];

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Input Arguments

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xx-coordinates
scalar | vector | matrix

x-coordinates, specified as a scalar, vector, or matrix. The size and shape of x depends on the shape of your data. This table describes the most common situations.

Type of PlotHow to Specify Coordinates
Single point

Specify x and y as scalars. For example:

scatter(1,2)
One set of points

Specify x and y as any combination of row or column vectors of the same length. For example:

scatter([1 2 3],[4; 5; 6])
Multiple sets of points that are different colors

If all the sets share the same x- or y-coordinates, specify the shared coordinates as a vector and the other coordinates as a matrix. The length of the vector must match one of the dimensions of the matrix. For example:

scatter([1 2 3],[4 5 6; 7 8 9])
If the matrix is square, scatter plots a separate set of points for each column in the matrix.

Alternatively, specify x and y as matrices of equal size. In this case, scatter plots each column of y against the corresponding column of x. For example:

scatter([1 3 5; 2 4 6],[10 25 45; 20 40 60])

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

yy-coordinates
scalar | vector | matrix

y-coordinates, specified as a scalar, vector, or matrix. The size and shape of y depends on the shape of your data. This table describes the most common situations.

Type of PlotHow to Specify Coordinates
Single point

Specify x and y as scalars. For example:

scatter(1,2)
One set of points

Specify x and y as any combination of row or column vectors of the same length. For example:

scatter([1 2 3],[4; 5; 6])
Multiple sets of points that are different colors

If all the sets share the same x- or y-coordinates, specify the shared coordinates as a vector and the other coordinates as a matrix. The length of the vector must match one of the dimensions of the matrix. For example:

scatter([1 2 3],[4 5 6; 7 8 9])
If the matrix is square, scatter plots a separate set of points for each column in the matrix.

Alternatively, specify x and y as matrices of equal size. In this case, scatter plots each column of y against the corresponding column of x. For example:

scatter([1 3 5; 2 4 6],[10 25 45; 20 40 60])

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

szMarker size
36 (default) | numeric scalar | row or column vector | matrix | []

Marker size, specified as a numeric scalar, vector, matrix, or empty array ([]). The size controls the area of each marker in points squared. An empty array specifies the default size of 36 points. The way you specify the size depends on how you specify x and y, and how you want the plot to look. This table describes the most common situations.

Desired Marker Sizesx and y szExample

Same size for all points

Any valid combination of vectors or matrices described for x and y.

Scalar

Specify x as a vector, y as a matrix, and sz as a scalar.

x = [1 2 3 4];y = [1 6; 3 8; 2 7; 4 9];scatter(x,y,100)

Different size for each point

Vectors of the same length

  • A vector with the same length as x and y.

  • A matrix with at least one dimension that matches the lengths of x and y. Specifying a matrix is useful for displaying multiple markers with different sizes at each (x,y) location.

Specify x, y, and sz as vectors.

x = [1 2 3 4];y = [1 3 2 4];sz = [80 150 700 50];scatter(x,y,sz)

Specify x and y as vectors and sz as a matrix.

x = [1 2 3 4];y = [1 3 2 4];sz = [80 30; 150 900; 50 2000; 200 350];scatter(x,y,sz)

Different size for each point

At least one of x or y is a matrix for plotting multiple data sets

  • A vector with the same number of elements as there are points in each data set.

  • A matrix that has the same size as the x or y matrix.

Specify x as a vector, y as a matrix, and sz as vector.

x = [1 2 3 4];y = [1 6; 3 8; 2 7; 4 9];sz = [80 150 50 700];scatter(x,y,sz)

Specify x as a vector, y as a matrix, and sz as a matrix the same size as y.

x = [1 2 3 4];y = [1 6; 3 8; 2 7; 4 9];sz = [80 30; 150 900; 50 2000; 200 350];scatter(x,y,sz)

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

cMarker color
color name | RGB triplet | matrix of RGB triplets | vector of colormap indices

Marker color, specified as a color name, RGB triplet, matrix of RGB triplets, or a vector of colormap indices.

  • Color name — A color name such as "red", or a short name such as "r".

  • RGB triplet — 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]. RGB triplets are useful for creating custom colors.

  • Matrix of RGB triplets — A three-column matrix in which each row is an RGB triplet.

  • Vector of colormap indices — A vector of numeric values that is the same length as the x and y vectors.

The way you specify the color depends on the desired color scheme and whether you are plotting one set of coordinates or multiple sets of coordinates. This table describes the most common situations.

Color SchemeHow to Specify the ColorExample

Use one color for all the points.

Specify a color name or a short name from the table below, or specify one RGB triplet.

Plot one set of points, and specify the color as "red".

scatter(1:4,[2 5 3 7],[],"red")

Plot two sets of points, and specify the color as red using an RGB triplet.

scatter(1:4,[2 5; 1 2; 8 4; 11 9],[],[1 0 0])

Assign different colors to each point using a colormap.

Specify a row or column vector of numbers. The numbers map into the current colormap array. The smallest value maps to the first row in the colormap, and the largest value maps to the last row. The intermediate values map linearly to the intermediate rows.

If your plot has three points, specify a column vector to ensure the values are interpreted as colormap indices.

You can use this method only when x, y, and sz are all vectors.

Create a vector c that specifies four colormap indices. Plot four points using the colors from the current colormap. Then, change the colormap to winter.

c = 1:4;scatter(1:4,[2 5 3 7],[],c)colormap(gca,"winter")

Create a custom color for each point.

Specify an m-by-3 matrix of RGB triplets, where m is the number of points in the plot.

You can use this method only when x, y, and sz are all vectors.

Create a matrix c that specifies RGB triplets for green, red, gray, and purple. Then create a scatter plot of four points using those colors.

c = [0 1 0; 1 0 0; 0.5 0.5 0.5; 0.6 0 1];scatter(1:4,[2 5 3 7],[],c)

Create a different color for each data set.

Specify an n-by-3 matrix of RGB triplets, where n is the number of data sets.

You can use this method only when at least one of x, y, or sz is a matrix.

Create a matrix c that contains two RGB triplets. Then plot two data sets using those colors.

c = [1 0 0; 0.6 0 1];s = scatter(1:4,[2 5; 1 2; 8 4; 11 9],[],c)

Color Names and RGB Triplets for Common Colors

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

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

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

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

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

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

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

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

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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"

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[0.8500 0.3250 0.0980]"#D95319"

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[0.9290 0.6940 0.1250]"#EDB120"

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[0.4940 0.1840 0.5560]"#7E2F8E"

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[0.4660 0.6740 0.1880]"#77AC30"

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[0.3010 0.7450 0.9330]"#4DBEEE"

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[0.6350 0.0780 0.1840]"#A2142F"

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mkrMarker symbol
"o" (default) | "+" | "*" | "." | "x" | ...

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

MarkerDescriptionResulting Marker
"o"Circle

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"+"Plus sign

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"*"Asterisk

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"."Point

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"x"Cross

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"_"Horizontal line

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"|"Vertical line

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"square"Square

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"diamond"Diamond

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"^"Upward-pointing triangle

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"v"Downward-pointing triangle

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">"Right-pointing triangle

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"<"Left-pointing triangle

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"pentagram"Pentagram

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"hexagram"Hexagram

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"filled"Option to fill interior of markers
"filled"

Option to fill the interior of the markers, specified as "filled". Use this option with markers that have a face, for example, "o" or "square". Markers that do not have a face and contain only edges do not draw ("+", "*", ".", and "x").

The "filled" option sets the MarkerFaceColor property of the Scatter object to "flat" and the MarkerEdgeColor property to "none", so the marker faces draw, but the edges do not.

tblSource table
table | timetable

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

xvarTable variables containing x-coordinates
one or more table variable indices

Table variables containing the x-coordinates, specified as one or more table variable indices.

Specifying Table Indices

Use any of the following indexing schemes to specify the desired variable or variables.

Indexing SchemeExamples

Variable names:

  • A string, character vector, or cell array.

  • A pattern object.

  • "A" or 'A' — A variable named A

  • ["A","B"] or {'A','B'} — Two variables named A and B

  • "Var"+digitsPattern(1) — Variables named "Var" followed by a single digit

Variable index:

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

  • A vector of numbers.

  • 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

  • [2 3] — The second and third variables from the table

  • [false false true] — The third variable

Variable type:

  • A vartype subscript that selects variables of a specified type.

  • vartype("categorical") — All the variables containing categorical values

Plotting Your Data

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

To plot one data set, specify one variable for xvar, and one variable for yvar. For example, read Patients.xls into the table tbl. Plot the Diastolic variable versus the Weight variable.

tbl = readtable("Patients.xls");scatter(tbl,"Weight","Diastolic")

To plot multiple data sets together, specify multiple variables for xvar, yvar, or both. If you specify multiple variables for both arguments, the number of variables must be the same.

For example, plot the Systolic and Diastolic variables against the Weight variable.

scatter(tbl,"Weight",["Systolic","Diastolic"])

You can use different indexing schemes for xvar and yvar. For example, specify xvar as a variable name and yvar as an index number.

scatter(tbl,"Weight",9)

yvarTable variables containing y-coordinates
one or more table variable indices

Table variables containing the y-coordinates, specified as one or more table variable indices.

Specifying Table Indices

Use any of the following indexing schemes to specify the desired variable or variables.

Indexing SchemeExamples

Variable names:

  • A string, character vector, or cell array.

  • A pattern object.

  • "A" or 'A' — A variable named A

  • ["A","B"] or {'A','B'} — Two variables named A and B

  • "Var"+digitsPattern(1) — Variables named "Var" followed by a single digit

Variable index:

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

  • A vector of numbers.

  • 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

  • [2 3] — The second and third variables from the table

  • [false false true] — The third variable

Variable type:

  • A vartype subscript that selects variables of a specified type.

  • vartype("categorical") — All the variables containing categorical values

Plotting Your Data

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

To plot one data set, specify one variable for xvar, and one variable for yvar. For example, read Patients.xls into the table tbl. Plot the Diastolic variable versus the Weight variable.

tbl = readtable("Patients.xls");scatter(tbl,"Weight","Diastolic")

To plot multiple data sets together, specify multiple variables for xvar, yvar, or both. If you specify multiple variables for both arguments, the number of variables must be the same.

For example, plot the Systolic and Diastolic variables against the Weight variable.

scatter(tbl,"Weight",["Systolic","Diastolic"])

You can use different indexing schemes for xvar and yvar. For example, specify xvar as a variable name and yvar as an index number.

scatter(tbl,"Weight",9)

axTarget axes
Axes object | PolarAxes object | GeographicAxes object

Target axes, specified as an Axes object, a PolarAxes object, or a GeographicAxes object. If you do not specify the axes and the current axes object is Cartesian, then the scatter function plots into the current axes.

A convenient way to create scatter plots in polar or geographic coordinates is to use the polarscatter or geoscatter functions.

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: "MarkerFaceColor","red" sets the marker face color to red.

The Scatter object properties listed here areonly a subset. For a complete list, see Scatter Properties.

ColorVariableTable variable containing color data
table variable index

Table variable containing the color data, specified as a variable index into the source table.

Specifying the Table Index

Use any of the following indexing schemes to specify the desired variable.

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 named 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

Specifying Color Data

Specifying the ColorVariable property controls the colors of the markers. The data in the variable controls the marker fill color when the MarkerFaceColor property is set to "flat". The data can also control the marker outline color, when the MarkerEdgeColor is set to "flat".

The table variable you specify can contain values of any numeric type. The values can be in either of the following forms:

  • A column of numbers that linearly map into the current colormap.

  • A three-column array of RGB triplets. RGB triplets are three-element vectors whose values specify the intensities of the red, green, and blue components of specific colors. The intensities must be in the range [0,1]. For example, [0.5 0.7 1] specifies a shade of light blue.

When you set the ColorVariable property, MATLAB updates the CData property.

Output Arguments

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sScatter object
Scatter object | array of Scatter objects

Scatter object or an array of Scatter objects. Use s to modify properties of a scatter chart after creating it.

Extended Capabilities

Version History

Introduced before R2006a

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Create plots by passing a table to the scatter function followed by the variables you want to plot. When you specify your data as a table, the axis labels and the legend (if present) are automatically labeled using the table variable names.

See Also

Functions

  • hold | plot | scatter3 | bubblechart | swarmchart

Properties

  • Scatter Properties

Topics

  • Plot Dates and Times
  • Plot Categorical Data
  • Plots That Support Tables

External Websites

  • MATLAB PlotGallery

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Scatter plot - MATLAB scatter- MathWorks France (52)

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Scatter plot - MATLAB scatter
- MathWorks France (2024)

FAQs

What is the scatter function in Scilab? ›

scatter(x,y) creates a scatter plot with markers centered at the (x, y) set of coordinates. The default type of the marker is a circle, the default color is "blue" and the default size is 36. This means the circle surrounding the marker has an area of 36 points squared.

How to group a scatter plot in MATLAB? ›

gscatter( x , y , g ) creates a scatter plot of x and y , grouped by g . The inputs x and y are vectors of the same size. gscatter( x , y , g , clr , sym , siz ) specifies the marker color clr , symbol sym , and size siz for each group.

How do you add a line to a scatter plot in MATLAB? ›

To produce scatter plots, use the MATLAB® scatter and plot functions. lsline( ax ) superimposes a least-squares line on the scatter plot in the axes specified by ax instead of the current axes ( gca ). h = lsline(___) returns a column vector of least-squares line objects h using any of the previous syntaxes.

How do I construct a scatter plot? ›

To construct a scatter diagram:
  1. Identify the independent and dependent variables.
  2. Assign the independent variable to the horizontal or x -axis. Assign the dependent variable to the vertical or y -axis.
  3. Plot the points on an (x,y) -grid.
  4. Label the axes, including both the variable names and units.
  5. Include a chart title.

How to plot a XY graph in Matlab? ›

To add an XY plot to your layout, click Visualizations and layouts . Then, from Visualizations, click or click and drag the XY icon onto the subplot. To plot signals on the XY plot, select signals in the table. Then, assign signal pairs to the x-Axis and y-Axis of a row in the XY Data dialog box.

What does scatter () do? ›

With Pyplot, you can use the scatter() function to draw a scatter plot.

Which function is used to create a scatter plot? ›

A scatter plot can be created using the function plot(x, y). The function lm() will be used to fit linear models between y and x. A regression line will be added on the plot using the function abline(), which takes the output of lm() as an argument. You can also add a smoothing line using the function loess().

How does a scatter plot work? ›

A scatter plot (aka scatter chart, scatter graph) uses dots to represent values for two different numeric variables. The position of each dot on the horizontal and vertical axis indicates values for an individual data point. Scatter plots are used to observe relationships between variables.

Can you do a scatter plot with two variables? ›

A scatterplot shows the relationship between two quantitative variables measured for the same individuals. The values of one variable appear on the horizontal axis, and the values of the other variable appear on the vertical axis. Each individual in the data appears as a point on the graph.

What is Scatterm in MATLAB? ›

Description. scatterm( lat , lon ) creates a scatter plot on the current axesm -based map with circular markers at the geographic locations specified by lat and lon . To display scatter plots on geographic axes or map axes, use the geoscatter function instead. scatterm( lat , lon , sz ) specifies the circle sizes.

How do you put two sets of data on a scatter plot? ›

Highlight the two columns you want to include in your scatter plot. Then, go to the “Insert” tab of your Excel menu bar and click on the scatter plot icon in the “Recommended Charts” area of your ribbon. Select “Scatter” from the options in the “Recommended Charts” section of your ribbon.

How to calculate correlation in MATLAB? ›

Description. rho = corr( X ) returns a matrix of the pairwise linear correlation coefficient between each pair of columns in the input matrix X . rho = corr( X , Y ) returns a matrix of the pairwise correlation coefficient between each pair of columns in the input matrices X and Y .

How to connect the points in MATLAB? ›

line([x3, x4], [y3, y4], 'Color', 'r'); % Line between point 4 and point 5. plot([x5,x6], [y5,y6], 'r-', 'LineWidth', 2); % Line between point 5 and point 6.

How to add trendline to scatter in MATLAB? ›

Direct link to this answer
  1. scatter(x, y, 'filled')
  2. hold on.
  3. plot(px, py, 'LineWidth', 2);
Dec 27, 2020

How to plot points in MATLAB? ›

plot( points , ax ) plots points in the specified axis. plot( points , ax ,Name=Value) specifies options using one or more name-value arguments in addition to any combination of arguments from previous syntaxes. For example, plot(ShowOrientation=true) renders the orientation in the display plot.

How to make a scatter plot of a matrix? ›

Creating a matrix of scatter plots between a set of variables is a good way to visualize the relationship between each pair of variables.
  1. Select Graph >> Matrix plot...
  2. Under Matrix of plots, select the Simple plot.
  3. In the box labeled Graph variables, specify the variables you want to include in your plot.
  4. Select OK.

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