You can combine plots in several ways. Combine plots in the same axes, or create multiple axes in a figure using a tiled chart layout.

By default, new plots clear existing plots and reset axes properties, such as the title. However, you can use the `hold on`

command to combine multiple plots in the same axes. For example, plot two lines and a scatter plot. Then reset the hold state to off.

x = linspace(0,10,50); y1 = sin(x); plot(x,y1) title('Combine Plots') hold on y2 = sin(x/2); plot(x,y2) y3 = 2*sin(x); scatter(x,y3) hold off

When the hold state is on, new plots do not clear existing plots or reset axes properties, such as the title or axis labels. The plots cycle through colors and line styles based on the `ColorOrder`

and `LineStyleOrder`

properties of the axes. The axes limits and tick values might adjust to accommodate new data.

Starting in R2019b, you can display multiple axes in a single figure by using the `tiledlayout`

function. This function creates a tiled chart layout containing an invisible grid of tiles over the entire figure. Each tile can contain an axes for displaying a plot. After creating a layout, call the `nexttile`

function to place an axes object into the layout. Then call a plotting function to plot into the axes.

For example, create two plots in a 2-by-1 layout. Add a title to each plot.

x = linspace(0,10,50); y1 = sin(x); y2 = rand(50,1); tiledlayout(2,1) % Top plot nexttile plot(x,y1) title('Plot 1') % Bottom plot nexttile scatter(x,y2) title('Plot 2')

To create a plot that spans multiple rows or columns, specify the `span`

argument when you call `nexttile`

. For example, create a 2-by-2 layout. Plot into the first two tiles. Then create a plot that spans one row and two columns.

x = linspace(0,10,50); y1 = sin(x); y2 = rand(50,1); % Top two plots tiledlayout(2,2) nexttile plot(x,y1) nexttile scatter(x,y2) % Plot that spans nexttile([1 2]) y2 = rand(50,1); plot(x,y2)

Modify the axes appearance by setting properties on each of the axes objects. You can get the axes object by calling the `nexttile`

function with an output argument. You also can specify the axes object as the first input argument to a graphics function to ensure that the function targets the correct axes.

For example, create two plots and assign the axes objects to the variables `ax1`

and `ax2`

. Change the axes font size and *x*-axis color for the first plot. Add grid lines to the second plot.

x = linspace(0,10,50); y1 = sin(x); y2 = rand(50,1); tiledlayout(2,1) % Top plot ax1 = nexttile; plot(ax1,x,y1) title(ax1,'Plot 1') ax1.FontSize = 14; ax1.XColor = 'red'; % Bottom plot ax2 = nexttile; scatter(ax2,x,y2) title(ax2,'Plot 2') grid(ax2,'on')

You can control the spacing around the tiles in a layout by specifying the `Padding`

and `TileSpacing`

properties. For example, display four plots in a 2-by-2 layout.

```
x = linspace(0,30);
y1 = sin(x);
y2 = sin(x/2);
y3 = sin(x/3);
y4 = sin(x/4);
% Create plots
t = tiledlayout(2,2);
nexttile
plot(x,y1)
nexttile
plot(x,y2)
nexttile
plot(x,y3)
nexttile
plot(x,y4)
```

Minimize the spacing around the perimeter of the layout and around each tile by setting the `Padding`

and `TileSpacing`

properties to `'none'`

.

t.Padding = 'none'; t.TileSpacing = 'none';

You can display a shared title and shared axis labels in a layout. Create a 2-by-1 layout `t`

. Then display a line plot and a stem plot. Synchronize the *x*-axis limits by calling the `linkaxes`

function.

x1 = linspace(0,20,100); y1 = sin(x1); x2 = 3:17; y2 = rand(1,15); % Create plots. t = tiledlayout(2,1); ax1 = nexttile; plot(ax1,x1,y1) ax2 = nexttile; stem(ax2,x2,y2) % Link the axes linkaxes([ax1,ax2],'x');

Add a shared title and shared axis labels by passing `t`

to the `title`

, `xlabel`

, and `ylabel`

functions. Move the plots closer together by removing the *x*-axis tick labels from the top plot and setting the `TileSpacing`

property of `t`

to `'compact'`

.

% Add shared title and axis labels title(t,'My Title') xlabel(t,'x-values') ylabel(t,'y-values') % Move plots closer together xticklabels(ax1,{}) t.TileSpacing = 'compact';

`hold`

|`nexttile`

|`tiledlayout`

|`title`