Forcing two subplots to have the same width

In the simple script below, I create two matrices, having different numbers of rows but the same number of columns:

m1 = rand(64,  512);
m2 = rand(128, 512);

h=figure;
subplot(2,1,1);
imagesc(m1);
axis equal;
xlim([1, 512]);
ylim([1, 64]);
title('64x512');

subplot(2,1,2);
imagesc(m2);
axis equal;
xlim([1, 512]);
ylim([1, 128]);
title('128x512');

set(h, 'Position', [100, 100, 800, 300]);

In the last line, when the figure size/aspect ratio is changed, the top image is rendered wider in the figure than the bottom image.

How can I set things up so that the two images are drawn with the same WIDTH, regardless of how the figure size/position is adjusted, while preserving the "axis equal" -- that the bottom figure is drawn with 2x the height of the top figure?

Answer 1

[Star Strider]

You have to increase the figure height to accommodate the change, then set the height of subplot(2,1,2) to 2x the height of subplot(2,1,1):

m1 = rand(64,  512);
m2 = rand(128, 512);

h=figure;
set(h, 'Position', [100, 100, 800, 600]);       % <— ‘Height’ Increased
subplot(2,1,1);
imagesc(m1);
axis equal;
xlim([1, 512]);
ylim([1, 64]);
title('64x512');
hsp1 = get(gca, 'Position')                     % Get 'Position' for (2,1,1)

subplot(2,1,2);
imagesc(m2);
axis equal;
xlim([1, 512]);
ylim([1, 128]);
title('128x512');
hsp2 = get(gca, 'Position')                     % Get 'Position' for (2,1,2)
set(gca, 'Position', [hsp2(1:3)  2*hsp1(4)])    % Use 2*(2,1,1) Height for (2,1,2)

[David Aronstein]

Thank you!

[Star Strider]

My pleasure!