Create axes in tiled positions (2024)

Table of Contents
Syntax Description Examples Upper and Lower Subplots Quadrant of Subplots Subplots with Different Sizes Replace Subplot with Empty Axes Subplots at Custom Positions Create Subplots with Polar Axes Modify Axes Properties After Creation Make Subplot the Current Axes Convert Existing Axes to Subplot Convert Axes in Separate Figures to Subplots Input Arguments m — Number of grid rows 1 (default) | positive integer n — Number of grid columns 1 (default) | positive integer p — Grid position for new axes scalar | vector pos — Custom position for new axes four-element vector ax — Existing axes to make current or convert to subplot Axes object | PolarAxes object | GeographicAxes object | graphics object Name-Value Arguments Tips Alternative Functionality Version History See Also Functions Properties Topics MATLAB Command Americas Europe Asia Pacific References

Create axes in tiled positions

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Syntax

subplot(m,n,p)

subplot(m,n,p,'replace')

subplot(m,n,p,'align')

subplot(m,n,p,ax)

subplot('Position',pos)

subplot(___,Name,Value)

ax = subplot(___)

subplot(ax)

Description

example

Note

tiledlayout is recommended over subplot because it enables you to create layouts with adjustable tile spacing, tiles that reflow according to the size of the figure, and better placed colorbars and legends. (since R2019b)

subplot(m,n,p) divides the current figure into an m-by-n grid and creates axes in the position specified by p. MATLAB® numbers subplot positions by row. The first subplot is the first column of the first row, the second subplot is the second column of the first row, and so on. If axes exist in the specified position, then this command makes the axes the current axes.

example

subplot(m,n,p,'replace') deletesexisting axes in position p and creates new axes.

subplot(m,n,p,'align') createsnew axes so that the plot boxes are aligned. This option is the defaultbehavior.

example

subplot(m,n,p,ax) convertsthe existing axes, ax, into a subplot in the samefigure.

example

subplot('Position',pos) createsaxes in the custom position specified by pos. Usethis option to position a subplot that does not align with grid positions.Specify pos as a four-element vector of the form [leftbottom width height]. If the new axes overlap existing axes,then the new axes replace the existing axes.

subplot(___,Name,Value) modifies axes properties using one or more name-value pair arguments. Set axes properties after all other input arguments.

example

ax = subplot(___) creates an Axes object, PolarAxes object, or GeographicAxes object. Use ax to make future modifications to the axes.

example

subplot(ax) makesthe axes specified by ax the current axes for theparent figure. This option does not make the parent figure the currentfigure if it is not already the current figure.

Examples

collapse all

Upper and Lower Subplots

Open Live Script

Create a figure with two stacked subplots. Plot a sine wave in each one. 

subplot(2,1,1);x = linspace(0,10);y1 = sin(x);plot(x,y1)subplot(2,1,2); y2 = sin(5*x);plot(x,y2)

Create axes in tiled positions (1)

Quadrant of Subplots

Create a figure divided into four subplots. Plot a sine wave in each one and title each subplot. 

subplot(2,2,1)x = linspace(0,10);y1 = sin(x);plot(x,y1)title('Subplot 1: sin(x)')subplot(2,2,2)y2 = sin(2*x);plot(x,y2)title('Subplot 2: sin(2x)')subplot(2,2,3)y3 = sin(4*x);plot(x,y3)title('Subplot 3: sin(4x)')subplot(2,2,4)y4 = sin(8*x);plot(x,y4)title('Subplot 4: sin(8x)')

Create axes in tiled positions (2)

Subplots with Different Sizes

Open Live Script

Create a figure containing with three subplots. Create two subplots across the upper half of the figure and a third subplot that spans the lower half of the figure. Add titles to each subplot. 

subplot(2,2,1);x = linspace(-3.8,3.8);y_cos = cos(x);plot(x,y_cos);title('Subplot 1: Cosine')subplot(2,2,2);y_poly = 1 - x.^2./2 + x.^4./24;plot(x,y_poly,'g');title('Subplot 2: Polynomial')subplot(2,2,[3,4]);plot(x,y_cos,'b',x,y_poly,'g');title('Subplot 3 and 4: Both')

Create axes in tiled positions (3)

Replace Subplot with Empty Axes

Open Live Script

Create a figure with four stem plots of random data. Then replace the second subplot with empty axes. 

for k = 1:4 data = rand(1,10); subplot(2,2,k) stem(data)end

Create axes in tiled positions (4)

subplot(2,2,2,'replace')

Create axes in tiled positions (5)

Subplots at Custom Positions

Open Live Script

Create a figure with two subplots that are not aligned with grid positions. Specify a custom position for each subplot.

pos1 = [0.1 0.3 0.3 0.3];subplot('Position',pos1)y = magic(4);plot(y)title('First Subplot')pos2 = [0.5 0.15 0.4 0.7];subplot('Position',pos2)bar(y)title('Second Subplot')

Create axes in tiled positions (6)

Create Subplots with Polar Axes

Open Live Script

Create a figure with two polar axes. Create a polar line chart in the upper subplot and a polar scatter chart in the lower subplot. 

figureax1 = subplot(2,1,1,polaraxes);theta = linspace(0,2*pi,50);rho = sin(theta).*cos(theta);polarplot(ax1,theta,rho)ax2 = subplot(2,1,2,polaraxes);polarscatter(ax2,theta,rho)

Create axes in tiled positions (7)

Modify Axes Properties After Creation

Open Live Script

Create a figure with two subplots. Assign the Axes objects to the variables ax1 and ax2. Specify the Axes objects as inputs to the plotting functions to ensure that the functions plot into a specific subplot.

ax1 = subplot(2,1,1);Z = peaks;plot(ax1,Z(1:20,:))ax2 = subplot(2,1,2); plot(ax2,Z)

Create axes in tiled positions (8)

Modify the axes by setting properties of the Axes objects. Change the font size for the upper subplot and the line width for the lower subplot. Some plotting functions set axes properties. Execute plotting functions before specifying axes properties to avoid overriding existing axes property settings. Use dot notation to set properties.

ax1.FontSize = 15;ax2.LineWidth = 2;

Create axes in tiled positions (9)

Make Subplot the Current Axes

Open Live Script

Create a figure with multiple subplots. Store the Axes objects in vector ax. Then make the second subplot the current axes. Create a line chart and change the axis limits for the second subplot. By default, graphics functions target the current axes. 

for k = 1:4 ax(k) = subplot(2,2,k);endsubplot(ax(2))x = linspace(1,50);y = sin(x);plot(x,y,'Color',[0.1, 0.5, 0.1])title('Second Subplot')axis([0 50 -1 1])

Create axes in tiled positions (10)

Convert Existing Axes to Subplot

Open Live Script

Create a line chart. Then convert the axes so that it is the lower subplot of the figure. The subplot function uses the figure in which the original axes existed.

x = linspace(1,10);y = sin(x);plot(x,y)title('Sine Plot')

Create axes in tiled positions (11)

ax = gca;subplot(2,1,2,ax)

Create axes in tiled positions (12)

Convert Axes in Separate Figures to Subplots

Combine axes that exist in separate figuresin a single figure with subplots.

Create two plots in two different figures. Assign the Axes objects to the variables ax1 and ax2. Assign the Legend object to the variable lgd.

figurex = linspace(0,10);y1 = sin(x);plot(x,y1)title('Line Plot 1')ax1 = gca;

Create axes in tiled positions (13)

figurey2 = 2*sin(x);plot(x,y2)title('Line Plot 2')lgd = legend('2*Sin(x)');ax2 = gca;

Create axes in tiled positions (14)

Create copies of the two Axes objectsusing copyobj. Specify the parents of the copiedaxes as a new figure. Since legends and colorbars do not get copiedwith the associated axes, copy the legend with the axes.

fnew = figure;ax1_copy = copyobj(ax1,fnew);subplot(2,1,1,ax1_copy)copies = copyobj([ax2,lgd],fnew);ax2_copy = copies(1);subplot(2,1,2,ax2_copy)

Create axes in tiled positions (15)

Input Arguments

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m — Number of grid rows
1 (default) | positive integer

Number of grid rows, specified as a positive integer.

Data Types: single | double

n — Number of grid columns
1 (default) | positive integer

Number of grid columns, specified as a positive integer.

Data Types: single | double

p — Grid position for new axes
scalar | vector

Grid position for the new axes, specified as a scalar or vectorof positive integers.

  • If p is a scalar positive integer,then subplot creates a subplot in grid position p.

  • If p is a vector of positive integers,then subplot creates a subplot that spans the gridpositions listed in p.

Example: subplot(2,3,1) creates a subplotin position 1.

Example: subplot(2,3,[2,5]) createsa subplot spanning positions 2 and 5.

Example: subplot(2,3,[2,6]) createsa subplot spanning positions 2, 3, 5, and 6.

Data Types: single | double

pos — Custom position for new axes
four-element vector

Custom position for the new axes, specified as a four-elementvector of the form [left bottom width height].

  • The left and bottom elementsspecify the position of the bottom-left corner of the subplot in relationto the bottom-left corner of the figure.

  • The width and height elementsspecify the subplot dimensions.

Specify values between 0 and 1 thatare normalized with respect to the interior of the figure.

Note

When using a script to create subplots, MATLAB does notfinalize the Position property value until eithera drawnow command is issued or MATLAB returnsto await a user command. The Position propertyvalue for a subplot is subject to change until the script either refreshesthe plot or exits.

Example: subplot('Position',[0.1 0.1 0.45 0.45])

Data Types: single | double

ax — Existing axes to make current or convert to subplot
Axes object | PolarAxes object | GeographicAxes object | graphics object

Existing axes to make current or convert to a subplot, specified as an Axes object, a PolarAxes object, a GeographicAxes object, or a graphics object with an PositionConstraint property, such as a HeatmapChart object.

To create empty polar or geographic axes in a subplot position, specify ax as the polaraxes or geoaxes function. For example, subplot(2,1,2,polaraxes).

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: subplot(m,n,p,'XGrid','on')

Some plotting functions override property settings. Consider setting axes properties after plotting. The properties you can set depend on the type of axes:

  • For Cartesian axes, see Axes Properties.

  • For polar axes, see PolarAxes Properties.

  • For geographic axes, see GeographicAxes Properties.

Tips

  • To clear the contents of the figure, use clf.For example, you might clear the existing subplot layout from thefigure before creating a new subplot layout.

  • To overlay axes, use the axes commandinstead. The subplot function deletes existingaxes that overlap new axes. For example, subplot('Position',[.35.35 .3 .3]) deletes any underlying axes, but axes('Position',[.35.35 .3 .3]) positions new axes in the middle of the figurewithout deleting underlying axes.

  • subplot(111) is an exception andnot identical in behavior to subplot(1,1,1). Forreasons of backwards compatibility, subplot(111) isa special case of subplot that does not immediately create axes, butsets up the figure so that the next graphics command executes clfreset. The next graphics command deletes all the figurechildren and creates new axes in the default position. subplot(111) doesnot return an Axes object and an error occurs ifcode specifies a return argument.

Alternative Functionality

Use the tiledlayout and nexttile functions to create a configurable tiling of plots. The configuration options include:

  • Control over the spacing between the plots and around the edges of the layout

  • An option for a shared title at the top of the layout

  • Options for shared x- and y-axis labels

  • An option to control whether the tiling has a fixed size or variable size that can reflow

For more information, see Combine Multiple Plots.

Version History

Introduced before R2006a

See Also

Functions

  • axes | cla | clf | figure | gca | tiledlayout | nexttile

Properties

  • Axes Properties | PolarAxes Properties | GeographicAxes Properties

Topics

  • Combine Multiple Plots

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                                                        Create axes in tiled positions (2024)
                        

                            
                        

                    

                                                            
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