Hey there! Great question—adding borders to your MATLAB plots to highlight key content is super useful, and we can tackle both your requests with straightforward code snippets. Let’s break this down:

1. Draw a Border Around the Entire Plot Area (Including Title & Axis Labels) #

To create a border that wraps around everything (plot, title, x/y labels), use MATLAB’s annotation function—it draws elements at the figure level (not just the axes), so your border covers all visible content instead of just the data plotting area.

Here’s a working example:

% First, create your plot as usual
plot(1:10, rand(1,10));
title('My Critical Plot');
xlabel('Sample X Values');
ylabel('Random Y Data');

% Add a border that covers the entire figure's content area
fig = gcf;
% Use normalized coordinates so the border scales with figure resizing
full_border = annotation(fig, 'rectangle', [0 0 1 1], ...
    'LineWidth', 2, ...       % Adjust thickness to your preference
    'Color', 'black', ...     % Pick any color you want
    'Units', 'normalized');

% Optional: Add a small gap between the border and figure edge
% full_border.Position = [0.02 0.02 0.96 0.96];

How this works: #

• The [0 0 1 1] position uses normalized coordinates (0 = bottom/left, 1 = top/right of the figure’s content area).
• Setting Units to normalized ensures the border automatically resizes if you adjust the figure window.

2. Add a Border to the MATLAB Figure Window Edge #

If you want a border around the outer edge of the figure window (not just the content), use a uipanel to create a visible frame. This works even if your figure has a custom background color:

% Create your figure and plot
fig = figure('Color', 'white');  % Example with custom background
plot(1:10, sin(1:10));
title('Window Border Demo');
xlabel('X Axis');
ylabel('Sine Wave');

% Create a panel covering the entire figure with a thick border
window_border = uipanel(fig, ...
    'Position', [0 0 1 1], ...
    'Units', 'normalized', ...
    'BorderWidth', 3, ...       % Make the border bold enough to see
    'BorderColor', '#CC0000', ...% Use a bold red (hex or named color works)
    'BackgroundColor', fig.Color);  % Match figure background to avoid gaps

% Move the axes to the top so your plot isn't hidden by the panel
ax = gca;
uistack(ax, 'top');

Bonus Tips: #

• Adjust LineStyle in either example to use dashed/dotted borders (e.g., 'LineStyle', '--').
• Combine both methods if you want both an inner content border and an outer window border.
• For consistent sizing, lock the figure dimensions first: fig.Units = 'pixels'; fig.Position = [100 100 800 600];

内容的提问来源于stack exchange，提问作者SirWiggles