How can I adjust the space between each subplot for a 5*3 subplots setup?

I know I need to have a format like this below but I could not figure out what are the values should be in after the 'position' parameter.

Also, I want to keep the title for each subplot.

ESPECIALLY, I don't want the vertical distance between each column of the subplot so large. It seems the distance between each column of the subplot becomes larger as the number of rows of subplots get larger.

Also its ok that if I can edit and change the space after I saved the figure as a .fig file. But not sure how.

Thank you for your hints/helps in advance.

subplot(5,3,1);imshow(a1_1,[]);title('(a1)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,2);imshow(a2_1,[]);title('(a2)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,3);imshow(a3_1,[]);title('(a3)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,4);imshow(b1_1,[]);title('(b1)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,5);imshow(b2_1,[]);title('(b2)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,6);imshow(b3_1,[]);title('(b3)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,7);imshow(c1_1,[]);title('(c1)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,8);imshow(c2_1,[]);title('(c2)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,9);imshow(c3_1,[]);title('(c3)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,10);imshow(d1_1,[]);title('(d1)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,11);imshow(d2_1,[]);title('(d2)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,12);imshow(d3_1,[]);title('(d3)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,13);imshow(e1_1,[]);title('(e1)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,14);imshow(e2_1,[]);title('(e2)');set(gca,'xtick',[],'ytick',[])
subplot(5,3,15);imshow(e3_1,[]);title('(e3)');set(gca,'xtick',[],'ytick',[])
ha=get(gcf,'children');
set(ha(1),'position',[ ])
set(ha(2),'position',[ ])
set(ha(3),'position',[ ])
set(ha(4),'position',[ ])
set(ha(5),'position',[ ])
set(ha(6),'position',[ ])
set(ha(7),'position',[ ])
set(ha(8),'position',[ ])
set(ha(9),'position',[ ])
set(ha(10),'position',[ ])
set(ha(11),'position',[ ])
set(ha(12),'position',[ ])
set(ha(13),'position',[ ])
set(ha(14),'position',[ ])
set(ha(15),'position',[ ])

[Dyuman Joshi]

If you want to adjust spacing arbitrarily, then tiledlayout will be a better option than subplot. See - Name-Value Argumens for tiledlayout

If you want to adjust spacing with a particular spacing distance in mind, you will have to get the existing positions of subplots and modify accordingly.

[Chen]

Thanks, how to get existing positions of subplots and modify them? I think I need a specific

[Chen]

Especially, I don't want the vertical distance between each column of the subplot so large. It seems the distance between each column of the subplot becomes larger as the number of rows of subplots get larger.

[Dyuman Joshi]

Did you check out the links I and @Matt J mentioned?

[Chen]

I'm not sure how to adjust the vertical space among the subplots, as I said, the distance between each column of the subplot becomes larger as the number of rows of subplots get larger. Even I use TileSpacing = 'tight', there are still big vertical spaces among subplots (when I have 3 columns). For exmaple:

Answer 1

[Matt J]

The subaxis function in this FEX download

https://www.mathworks.com/matlabcentral/fileexchange/3696-subaxis-subplot?s_tid=srchtitle

offers specific settings for horizontal and vertical spacing.

n=4;

figure;
for i=1:n
    subaxis(1,n,i, 'SpacingHoriz',0);
    imagesc(phantom(128)); axis image off
    colormap(gray)
end

figure;
for i=1:n
    subaxis(1,n,i, 'SpacingHoriz',0.05);
    imagesc(phantom(128)); axis image off
    colormap(gray)
end

Answer 2

[Matt J]

n=4;

%1x4
figure;
t=tiledlayout(1,n,'TileSpacing','tight');
for i=1:prod(t.GridSize)
    nexttile
    imagesc(phantom(128)); axis image off
    colormap(gray)
end

%3x4
figure;
t=tiledlayout(3,n,'TileSpacing','tight');
for i=1:prod(t.GridSize)
    nexttile
    imagesc(phantom(128)); axis image off
    colormap(gray)
end

[Matt J]

As I said, the distance between each column of the subplot becomes larger as the number of rows of subplots get larger.

It's because the tiledlayout expands elastically to fill the figure window. If you narrow the window, you should see the thumbnails compress together.