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polarscatter(theta,rho)
polarscatter(theta,rho,sz)
polarscatter(theta,rho,sz,c)
polarscatter(___,mkr)
polarscatter(___,'filled')
polarscatter(tbl,thetavar,rhovar)
polarscatter(tbl,thetavar,rhovar,'filled')
polarscatter(pax,___)
polarscatter(___,Name,Value)
ps = polarscatter(___)

explain

Vector and matrix data

polarscatter(theta,rho) draw theta Yes rho Graph , And a circular mark is displayed at each data point to show .theta and rho It must be a vector with the same length . Must be specified in radians theta.

To draw a set of points , Please put theta and rho Specify as equal length vector .
To draw multiple sets of points in the same polar coordinate area , Please put theta or rho At least one of is specified as a matrix .

polarscatter(theta,rho,sz) Set tag size , among sz Specify the area of each tag in square pounds . To draw all tags with the same size , Please put sz Specify as scalar . To draw markers with different sizes , Please specify as vector or matrix .

polarscatter(theta,rho,sz,c) Specify the marker color . You can assign a color to all tags , You can also change the color . for example , It can be done by putting c Designated as 'red' To draw all red circles .

polarscatter(___,mkr) Set the marking symbol . for example ,'+' Show cross marks . Specify the marker symbol after any combination of input parameters in the above syntax .

polarscatter(___,'filled') Fill the inside of the tag .

Table data

polarscatter(tbl,thetavar,rhovar) Draw a table tbl The variables in the thetavar and rhovar. To plot a data set , Please for thetavar Specify a variable , by rhovar Specify a variable . To plot multiple data sets , Please for thetavar、rhovar Or both specify multiple variables . If both parameters specify multiple variables , They must specify the same number of variables .（ since R2021b Start offering ）

polarscatter(tbl,thetavar,rhovar,'filled') Draw the specified variable in the table with a solid circle .（ since R2021b Start offering ）

The other options

polarscatter(pax,___) Will be in pax Specified polar coordinate area （ Instead of the current coordinate area ） Draw a picture in .

polarscatter(___,Name,Value) Use one or more names - Value pair group parameters modify the appearance of the scatter chart . for example , You can specify 'FaceAlpha' And a 0 and 1 Scalar values between , To use translucent markers .

ps = polarscatter(___) return Scatter Object or Scatter An array of objects . Creating Scatter Object can be used after ps Modify its appearance . About the attribute list , You can refer to Scatter attribute .

Example

Create a scatter diagram

Create a scatter plot in polar coordinates .

th = pi/4:pi/4:2*pi;
r = [19 6 12 18 16 11 15 15];
polarscatter(th,r)

As shown in the figure ：

Use fill tags and set tag size

By specifying optional input parameters 'filled', Create a scatter chart with fill marks . Set the tag size to 75 Square pound .

th = linspace(0,2*pi,20);
r = rand(1,20);
sz = 75;
polarscatter(th,r,sz,'filled')

As shown in the figure ：

Use markers with different sizes and colors

Create a scatter chart with markers of different sizes and colors . Specify the optional size and color input parameters as vectors . Use the uniqueness value in the color vector to specify the different colors you want . These values map to different colors in the color map .

th = pi/4:pi/4:2*pi;
r = [19 6 12 18 16 11 15 15];
sz = 100*[6 15 20 3 15 3 6 40];
c = [1 2 2 2 1 1 2 1];
polarscatter(th,r,sz,c,'filled','MarkerFaceAlpha',.5)

As shown in the figure ：

Convert from degrees to radians before drawing

Create data with angle values in degrees . because polarscatter The angle value is required to be in radians , So use before drawing deg2rad Convert values to radians .

th = linspace(0,360,50);
r = 0.005*th/10;
th_radians = deg2rad(th);
polarscatter(th_radians,r)

As shown in the figure ：

Merge two scatter charts

Use hold The command merges two scatter plots located in the same polar region . Add a legend containing the explanatory information of each figure .

th = pi/6:pi/6:2*pi;
r1 = rand(12,1);
polarscatter(th,r1,'filled')

hold on 
r2 = rand(12,1);
polarscatter(th,r2,'filled')
hold off

legend('Series A','Series B')

As shown in the figure ：

Modify after creating the scatter chart

Create a scatter chart , And assign the scatter object to the variable ps.

th = pi/6:pi/6:2*pi;
r = rand(12,1);
ps = polarscatter(th,r,'filled')

As shown in the figure ：

ps = 
  Scatter with properties:

          ThetaData: [0.5236 1.0472 1.5708 2.0944 2.6180 3.1416 3.6652 ... ]
              RData: [0.8147 0.9058 0.1270 0.9134 0.6324 0.0975 0.2785 ... ]
              ZData: [1x0 double]
           SizeData: 36
              CData: [0 0.4470 0.7410]
             Marker: 'o'
    MarkerEdgeColor: 'none'
    MarkerFaceColor: 'flat'
          LineWidth: 0.5000

  Show all properties

After you create a scatter object, you can use ps Modify its properties .

ps.Marker = 'square';
ps.SizeData = 200;
ps.MarkerFaceColor = 'red';
ps.MarkerFaceAlpha = .5;

As shown in the figure ：

Draw the data in the table

since R2021b Start offering , A convenient way to draw data in a table is to pass the table to polarscatter function , And specify the variables to draw . for example , Create a table with three variables , And draw 'Th' and 'R1' Variable .

% Create a table of random numbers
Th = linspace(0,2*pi,50)';
R1 = randi([0 10],50,1);
R2 = randi([20 30],50,1);
tbl = table(Th,R1,R2);

% Create polar scatter chart
polarscatter(tbl,'Th','R1')

As shown in the figure ：

You can also draw multiple variables at the same time . for example , By way of rvar The parameter is specified as a cell array {'R1','R2'} To plot two sets of radius values . then , Add a legend . The legend label matches the variable name .

polarscatter(tbl,'Th',{'R1','R2'})
legend

As shown in the figure ：

Draw table data using custom tag size and color

since R2021b Start offering , One way to draw data in a table and customize colors and marker sizes is to set ColorVariable and SizeData attribute . You can call polarscatter Function, set these properties to the name - Value parameter , Or later in Scatter Set them on the object .

for example , Create a table containing three random number variables , And draw with fill marks Th and R Variable . By designation ColorVariable name - Value parameter to change the marker color . take Scatter Object returned as s, So that you can set other properties later .

Th = linspace(0,2*pi,50)';
R = randi([0 10],50,1);
Colors = rand(50,1);
tbl = table(Th,R,Colors);
s = polarscatter(tbl,'Th','R','filled','ColorVariable','Colors');

As shown in the figure ：

By setting SizeData attribute , Change the tag size to 100 pounds .

s.SizeData = 100;

As shown in the figure ：

Input parameter description

theta - theta value

Theta value , Specify as scalar 、 Vector or matrix . Scatter object ThetaData Property store theta value .theta The size and shape of depends on the shape of the data . The following table describes the most common cases .

Drawing type	How to specify coordinates
Single point	take theta and rho Specify as scalar . for example ： polarscatter(pi/2,0.5)
A set of points	Appoint theta and rho Is any combination of row vectors or column vectors of the same length . for example ： polarscatter([0 pi/4 pi/2],[1; 2; 3])
Multiple groups of dots with different colors	If all groups share the same theta or rho value , Please specify the shared coordinates as a vector , Specify other coordinates as a matrix . The length of the vector must match one of the dimensions of the matrix . for example ： polarscatter([0 pi/4 pi/2],[4 5 6; 7 8 9]) If the matrix is a square matrix ,polarscatter A separate set of points will be drawn for each column in the matrix . You can also specify theta and rho Is a matrix of the same size . In this case ,polarscatter draw theta Each column pair of rho Graph of the corresponding column of . for example ： polarscatter([0 pi/6 pi/2; pi/8 pi/4 pi],[1 2 3; 4 5 6])

Drawing type

How to specify coordinates

Single point

take theta and rho Specify as scalar . for example ：

polarscatter(pi/2,0.5)

A set of points

Appoint theta and rho Is any combination of row vectors or column vectors of the same length . for example ：

polarscatter([0 pi/4 pi/2],[1; 2; 3])

Multiple groups of dots with different colors

If all groups share the same theta or rho value , Please specify the shared coordinates as a vector , Specify other coordinates as a matrix . The length of the vector must match one of the dimensions of the matrix . for example ：

polarscatter([0 pi/4 pi/2],[4 5 6; 7 8 9])

If the matrix is a square matrix ,polarscatter A separate set of points will be drawn for each column in the matrix .

You can also specify theta and rho Is a matrix of the same size . In this case ,polarscatter draw theta Each column pair of rho Graph of the corresponding column of . for example ：

polarscatter([0 pi/6 pi/2; pi/8 pi/4 pi],[1 2 3; 4 5 6])

rho - rho value

rho value , Specify as scalar 、 Vector or matrix . Scatter object RData Property store rho value .rho The size and shape of depends on the shape of the data . The following table describes the most common cases .

Drawing type	How to specify coordinates
Single point	take theta and rho Specify as scalar . for example ： polarscatter(pi/2,0.5)
A set of points	Appoint theta and rho Is any combination of row vectors or column vectors of the same length . for example ： polarscatter([0 pi/4 pi/2],[1; 2; 3])
Multiple groups of dots with different colors	If all groups share the same theta or rho value , Please specify the shared coordinates as a vector , Specify other coordinates as a matrix . The length of the vector must match one of the dimensions of the matrix . for example ： polarscatter([0 pi/4 pi/2],[4 5 6; 7 8 9]) If the matrix is a square matrix ,polarscatter A separate set of points will be drawn for each column in the matrix . You can also specify theta and rho Is a matrix of the same size . In this case ,polarscatter draw theta Each column pair of rho Graph of the corresponding column of . for example ： polarscatter([0 pi/6 pi/2; pi/8 pi/4 pi],[1 2 3; 4 5 6])

Drawing type

How to specify coordinates

Single point

take theta and rho Specify as scalar . for example ：

polarscatter(pi/2,0.5)

A set of points

Appoint theta and rho Is any combination of row vectors or column vectors of the same length . for example ：

polarscatter([0 pi/4 pi/2],[1; 2; 3])

Multiple groups of dots with different colors

polarscatter([0 pi/4 pi/2],[4 5 6; 7 8 9])

If the matrix is a square matrix ,polarscatter A separate set of points will be drawn for each column in the matrix .

You can also specify theta and rho Is a matrix of the same size . In this case ,polarscatter draw theta Each column pair of rho Graph of the corresponding column of . for example ：

polarscatter([0 pi/6 pi/2; pi/8 pi/4 pi],[1 2 3; 4 5 6])

sz - Tag size

Tag size , Specify as numeric scalar 、 vector 、 Matrix or empty array ([]). Size controls the area of each marker （ In square pounds ）. An empty array specifies 36 The default size of the pound . The way you specify the size depends on how you specify theta and rho, And the desired drawing appearance . The following table describes the most common cases .

Desired tag size theta and rho sz Example

Desired tag size	`theta` and `rho`	`sz`	Example
All points have the same size	in the light of theta and rho Any effective combination of said vectors or matrices .	Scalar	take theta Specify as vector , take rho Specify as matrix , take sz Specify as scalar . th = [0 pi/6 pi/2]; r = [1 2; 2 4; 5 6]; polarscatter(th,r,100)
The size of each point is different	Vectors of the same length	And theta and rho Vectors of the same length . There is at least one dimension associated with theta and rho Length matching matrix . Specify the matrix for each (th,r) It is useful to display multiple tags of different sizes in position .	take theta、rho and sz Specify as vector . th = [0 pi/6 pi/2]; r = [1; 2; 3]; sz = [50 500 100]; polarscatter(th,r,sz) take theta and rho Specify as vector , take sz Specify as matrix . th = [0 pi/6 pi/2]; r = [1; 2; 3]; sz = [50 500 100; 300 1000 200]; polarscatter(th,r,sz)
The size of each point is different	x or y At least one of them is a matrix for plotting multiple data sets	A vector whose number of elements is the same as the number of points in each data set . And theta or rho Matrix of the same size .	take theta Specify as vector , take rho Specify as matrix , take sz Specify as vector . th = [0 pi/6 pi/2]; r = [1 2; 2 4; 5 6]; sz = [50 500 1000]; polarscatter(th,r,sz) take theta Specify as vector , take rho Specify as matrix , take sz Specify as and rho A matrix of the same size . th = [0 pi/6 pi/2]; r = [1 2; 2 4; 5 6]; sz = [50 500; 1000 2000; 100 300]; polarscatter(th,r,sz)

All points have the same size

in the light of theta and rho Any effective combination of said vectors or matrices .

Scalar

take theta Specify as vector , take rho Specify as matrix , take sz Specify as scalar .

th = [0 pi/6 pi/2];
r = [1 2; 2 4; 5 6];
polarscatter(th,r,100)

The size of each point is different

Vectors of the same length

And theta and rho Vectors of the same length .
There is at least one dimension associated with theta and rho Length matching matrix . Specify the matrix for each (th,r) It is useful to display multiple tags of different sizes in position .

take theta、rho and sz Specify as vector .

th = [0 pi/6 pi/2];
r = [1; 2; 3];
sz = [50 500 100];
polarscatter(th,r,sz)

take theta and rho Specify as vector , take sz Specify as matrix .

th = [0 pi/6 pi/2];
r = [1; 2; 3];
sz = [50 500 100; 300 1000 200];
polarscatter(th,r,sz)

The size of each point is different

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

A vector whose number of elements is the same as the number of points in each data set .
And theta or rho Matrix of the same size .

take theta Specify as vector , take rho Specify as matrix , take sz Specify as vector .

th = [0 pi/6 pi/2];
r = [1 2; 2 4; 5 6];
sz = [50 500 1000];
polarscatter(th,r,sz)

take theta Specify as vector , take rho Specify as matrix , take sz Specify as and rho A matrix of the same size .

th = [0 pi/6 pi/2];
r = [1 2; 2 4; 5 6];
sz = [50 500; 1000 2000; 100 300];
polarscatter(th,r,sz)

c - Mark the color

Mark the color , Specify as color name 、RGB A triple 、RGB Triplet matrix or vector composed of color map index .

Color name - Color name （ Such as 'red'） Or short name （ Such as 'r'）.
RGB A triple - Three element row vector , Its elements specify the color medium red 、 green 、 The intensity of the blue component . The strength value must be in [0,1] Within the scope of , for example [0.4 0.6 0.7].RGB Triples are useful for creating custom colors .
RGB Triple matrix - Three column matrix , Each of these lines is a RGB A triple .
Vector composed of color map index - Numeric vectors , Its length is equal to theta and rho The vectors are the same .

The way you specify colors depends on the desired color scheme and whether to draw a set of coordinates or multiple sets of coordinates . The following table describes the most common cases .

Color scheme	How to specify colors	Example
Use one color for all points .	Specify a color name or short name from the following table , Or specify a RGB A triple .	Draw a set of points , And specify the color as 'red'. th = [0 pi/6 pi/2]; r = [1 2 3]; c = 'red'; polarscatter(th,r,[],c) Draw two sets of points , And use a RGB The triplet specifies the color as red . th = [0 pi/6 pi/2]; r = [1 2; 2 4; 5 6]; c = [1 0 0]; polarscatter(th,r,[],c)
Use a color map to assign different colors to each point .	Specify a row vector or column vector consisting of numbers . Index of values in the current color map array . The minimum value is mapped to the first line in the color map , The maximum value is mapped to the last line . The intermediate value is linearly mapped to the intermediate line . If the plot has three points , Please specify a column vector , To ensure that these values are interpreted as color map indexes . Only when the theta、rho and sz When both are vectors , To use this method .	Create a vector c, It specifies four color map indexes . Draw four points using the colors in the current color map . then , Change the color map to winter. th = [0 pi/6 pi/2 2*pi/3]; r = [1 2 3 4]; c = [1 2 3 4]; polarscatter(th,r,[],c) colormap(gca,'winter')
Create a custom color for each point .	Specify a by RGB Composed of triples m×3 matrix , among m Is the number of points in the graph . Only when the theta、rho and sz When both are vectors , To use this method .	Create a matrix c, It specifies four colors RGB A triple . Then use these colors to create and draw four points . th = [0 pi/6 pi/2 2*pi/3]; r = [1 2 3 4]; c = [1 0 0; 0 1 0; 0 0 1; 0 0 0]; polarscatter(th,r,[],c)
Create a different color for each dataset .	Specify a by RGB Composed of triples n×3 matrix , among n For the number of data sets . Only when the theta、rho or sz When at least one of them is a matrix , To use this method .	Create one that contains two RGB Matrix of triples c. Then use these colors to draw two data sets . th = [0 pi/6 pi/2]; r = [1 2; 2 4; 5 6]; c = [1 0 0; 0 0 1]; polarscatter(th,r,[],c)

The color names of common colors and RGB A triple

Color name	Short name	RGB A triple	Hexadecimal color code
'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'

Here are MATLAB The default color used in many types of drawings RGB Triples and hex color codes .

RGB A triple	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'

mkr - The sign

The sign , Specify as one of the marking symbols listed in the following table .

Mark	explain	Generated tags
`'o'`	circle
`'+'`	plus
`'*'`	asterisk
`'.'`	spot
`'x'`	Cross
`'_'`	Horizontal lines
`'\|'`	Vertical lines
`'s'`	square
`'d'`	The diamond
`'^'`	Upper triangle
`'v'`	Lower triangle
`'>'`	Right triangle
`'<'`	Left triangle
`'p'`	Pentagonal
`'h'`	hexagon

Scatter object Marker Attributes store tag symbols .

tbl - Source table

The source table containing the data to plot . Specify this parameter as a table or schedule .

thetavar - contain theta Table variables of values

contain theta Table variables of values , Specify an index for one or more table variables .

Specify table index

Use any of the following indexing schemes to specify one or more of the required variables .

Indexing scheme	Example
Variable name ： Character vector or string scalar . Cell array or string vector .	'A' or "A" - be known as A The variable of {'A','B'} or ["A","B"] - be known as A and B Two variables of
Variable number ： The index number of the position of the reference variable in the table . A vector of numbers .	3 - The third variable in the table [2 3] - The second and third variables in the table
Logical vector ： n Element logic vector , among logical 1 (true) Value represents the desired variable . The last one can be omitted true The tail after the value false value .	[false false true false] - m×4 The third variable in the table [false false true] - The third variable in a table of any size [false true true] - The second and third variables in a table of any size
Variable type ： You can choose to specify the type of table variable vartype command .	vartype('categorical') - All variables that contain classification values

Indexing scheme

Example

Variable name ：

Character vector or string scalar .
Cell array or string vector .

'A' or "A" - be known as A The variable of
{'A','B'} or ["A","B"] - be known as A and B Two variables of

Variable number ：

The index number of the position of the reference variable in the table .
A vector of numbers .

3 - The third variable in the table
[2 3] - The second and third variables in the table

Logical vector ：

n Element logic vector , among logical 1 (true) Value represents the desired variable .
The last one can be omitted true The tail after the value false value .

[false false true false] - m×4 The third variable in the table
[false false true] - The third variable in a table of any size
[false true true] - The second and third variables in a table of any size

Variable type ：

You can choose to specify the type of table variable vartype command .

vartype('categorical') - All variables that contain classification values

Plot your data
The specified table variable can contain any numeric data type .

To plot a data set , Please for thetavar Specify a variable , by rhovar Specify a variable . for example , Create a table with three variables . draw Th and R1 Variable .

% Create a table of random numbers
Th = linspace(0,2*pi,10)';
R1 = randi([0 10],10,1);
R2 = randi([20 30],10,1);
tbl = table(Th,R1,R2);

% Create polar scatter chart
polarscatter(tbl,'Th','R1')

To plot multiple data sets together , Please for thetavar、rhovar Or both specify multiple variables . If you specify multiple variables for both parameters , Then the number of variables of each parameter must be the same .

for example , stay theta Draw on the axis Th Variable , stay r Draw on the axis R1 and R2 Variable .

polarscatter(tbl,'Th',{'R1','R2'})

You can also use different indexing schemes for table variables . for example , take thetavar Specify as variable name , take rhovar Specify as index number .

polarscatter(tbl,'Th',2)

rhovar - contain rho Table variables of values

contain rho Table variables of values , Specify an index for one or more table variables .

Specify table index

Use any of the following indexing schemes to specify one or more of the required variables .

Indexing scheme	Example
Variable name ： Character vector or string scalar . Cell array or string vector .	'A' or "A" - be known as A The variable of {'A','B'} or ["A","B"] - be known as A and B Two variables of
Variable number ： The index number of the position of the reference variable in the table . A vector of numbers .	3 - The third variable in the table [2 3] - The second and third variables in the table
Logical vector ： n Element logic vector , among logical 1 (true) Value represents the desired variable . The last one can be omitted true The tail after the value false value .	[false false true false] - m×4 The third variable in the table [false false true] - The third variable in a table of any size [false true true] - The second and third variables in a table of any size
Variable type ： You can choose to specify the type of table variable vartype command .	vartype('categorical') - All variables that contain classification values

Indexing scheme

Example

Variable name ：

Character vector or string scalar .
Cell array or string vector .

'A' or "A" - be known as A The variable of
{'A','B'} or ["A","B"] - be known as A and B Two variables of

Variable number ：

The index number of the position of the reference variable in the table .
A vector of numbers .

3 - The third variable in the table
[2 3] - The second and third variables in the table

Logical vector ：

n Element logic vector , among logical 1 (true) Value represents the desired variable .
The last one can be omitted true The tail after the value false value .