title — Set title text for the current axes or a specified axes handle with MATLAB-compatible title forms.
title attaches text labels to individual axes and returns a text handle for property updates. It follows MATLAB-compatible axes-scoped behavior, distinct from figure-level title helpers like sgtitle/suptitle.
Syntax
h = title(txt)
h = title(ax, txt)
h = title(txt, Name, Value, ...)
h = title(ax, txt, Name, Value, ...)Inputs
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
txt | Any | Yes | — | Title text (string/char/cellstr-like multiline forms). |
ax | AxesHandle | Yes | — | Target axes handle. |
props | Any | Variadic | — | Property/value pairs (Color, FontSize, FontWeight, etc.). |
Returns
| Name | Type | Description |
|---|---|---|
h | NumericScalar | Handle to the created/updated title object. |
Errors
| Identifier | When | Message |
|---|---|---|
RunMat:title:InvalidArgument | Axes handle, text payload, or property/value arguments are invalid. | title: invalid argument |
RunMat:title:Internal | Internal plotting state update fails. | title: internal operation failed |
How title works
- The returned value is a text handle that can be inspected or updated through
getandset. - With no explicit target,
titleattaches text to the current axes as returned bygca. - Passing an axes handle as the first argument targets that specific axes, which is useful in subplot layouts.
- String scalars, char arrays, string arrays, and cell arrays are all accepted. String arrays and cell arrays produce multiline titles, with elements joined by newlines.
- Text styling properties —
FontSize,FontWeight,FontAngle,Color,Interpreter, andVisible— use the shared plotting text-property system. - Passing an unrecognized property name raises an error. Passing a non-numeric value for
FontSizeraises an error.
Examples
Add a title to the current axes
plot(0:0.1:2*pi, sin(0:0.1:2*pi));
title('Sine Wave');Expected output:
% title is rendered above the axesStyle the title and inspect its handle
plot(1:10, rand(1, 10));
h = title('Random Signal', 'FontSize', 16, 'FontWeight', 'bold');
get(h, 'Type')Expected output:
ans =
'text'Set an independent title on each subplot panel
subplot(1, 2, 1);
plot(0:0.1:pi, sin(0:0.1:pi));
title('Sine');
subplot(1, 2, 2);
plot(0:0.1:pi, cos(0:0.1:pi));
title('Cosine');Expected output:
% Each panel has its own title; the figure has noneTarget a specific axes using an explicit handle
ax1 = subplot(1, 2, 1);
plot(ax1, 1:5, 1:5);
ax2 = subplot(1, 2, 2);
plot(ax2, 1:5, (1:5).^2);
title(ax1, 'Linear');
title(ax2, 'Quadratic');Expected output:
% Titles are attached to their respective axes regardless of which is currently selectedCreate a multiline title from a string array
plot(1:5, [2 4 1 3 5]);
title(["Top line"; "Bottom line"]);Expected output:
% Both strings appear, stacked above the axesUpdate a title after plotting using set
plot(1:10, rand(1, 10));
h = title('Draft');
set(h, 'String', 'Final Title', 'FontSize', 14);Expected output:
% The axes title is updated in placeUsing title with coding agents
Open a RunMat example with live inputs, then ask the agent to explain how title changes the result.
Run a small title example, explain the result, then change one input and compare the output.
FAQ
How is title different from sgtitle?⌄
title is axes-scoped: it attaches to one panel. sgtitle is figure-scoped and is drawn once above all subplot panels. Use title for per-panel labels and sgtitle for an overall figure heading.
How do I create a multiline title?⌄
Pass a string array or cell array. RunMat joins the elements with newlines.
title({'First line', 'Second line'});Can I update the title after the plot is created?⌄
Yes. title returns a text handle, so you can update it at any time with set.
h = title('Initial');
set(h, 'String', 'Updated', 'Color', 'r');How do I set titles on specific subplots without changing the active axes?⌄
Pass the axes handle returned by subplot or gca as the first argument.
ax = subplot(2, 1, 1);
title(ax, 'Top Panel');Related Plotting functions
More plotting resources
Open-source implementation
Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how title is executed, line by line, in Rust.
- View the source for title in Rust on GitHub
- Learn how the RunMat runtime works
- Found a bug? Open an issue with a minimal reproduction.
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