Forcing two subplots to have the same width
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David Aronstein
on 17 Aug 2014
Commented: Star Strider
on 18 Aug 2014
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?
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Accepted Answer
Star Strider
on 17 Aug 2014
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)
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