Make subplot 'stick' to each other

Question

Hannah 2022-4-21

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https://ww2.mathworks.cn/matlabcentral/answers/1702105-make-subplot-stick-to-each-other

评论： Hannah 2022-4-26

Hi,

I am making a figure with several subplots (maps, specifically). Setting 'Position' will make each subplot very far away from each other since it is setting the outter boundary position. I tried using 'InnerPosition but it seems not working (don't know why, maybe because they are maps?).

How could I make the subplots stick to eachother? My code is also attached below.

fw = 0.5; % figure width
fh = 0.5 ; % figure height 
L1 = 0; % row 1 from bottom;
L2 = L1+fh; % row 2 from bottom;
C1 = 0; % column from left
C2 = C1+fw; % column from left
Positions =[C1 L2 fw fh;
            C2 L2 fw fh;
            C1 L1 fw fh;
            C2 L1 fw fh];
cbh = 0.015;
cbw = fw-0.1;
fhi = fw * (latmax-latmin)/(lonmax-lonmin) ; % inner figure height 
ver_edge = (0.5-fhi)/2;
cbpos =[C1+0.05  1-0.5*ver_edge  cbw cbh;
        C2+0.05  1-0.5*ver_edge  cbw cbh;
        C1+0.05  L1+0.5*ver_edge   cbw cbh;
        C2+0.05  L1+0.5*ver_edge   cbw cbh];
for ps = 1:4
    subplot('Position',Positions(ps,:))
    % skip other settings
    cb1=colorbar('horizontal', 'fontsize',fz, 'fontweight', 'bold','Position',cbpos(ps,:)); % color bar definition; for later use
end

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Answer 1

Hannah 2022-4-25

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Okay I see what is the problem. The aspect ratio (figure height / figure width) in worldmap is

((latmax-latmin)/180 )/((lonmax-lonmin)/360)

While what I did is (latmax-latmin)/(lonmax-lonmin). This doubled the aspect ratio therefore leaved lots of white space. Below is the corrected layout I got (without putting any data yet):

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the cyclist 2022-4-25

I'm glad it worked out

Hannah 2022-4-26

Thanks for helping!!

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Answer 2

the cyclist 2022-4-21

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编辑：the cyclist 2022-4-21

It might be easier to do what you want with the newer tiledlayout command for making subplots.

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Hannah 2022-4-22

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Hi there,

Yea I didn't post the entire code since it is super long. I just generated something that can run:

latmin = -45;
latmax = 65;
lonmin = -160;
lonmax = 168;
fw = 0.5; % figure width
fh = 0.5 ; % figure height 
L1 = 0; % row 1 from bottom;
L2 = L1+fh; % row 2 from bottom;
C1 = 0; % column from left
C2 = C1+fw; % column from left
Positions =[C1 L2 fw fh;
            C2 L2 fw fh;
            C1 L1 fw fh;
            C2 L1 fw fh];
cbh = 0.015;
cbw = fw-0.1;
fhi = fw * (latmax-latmin)/(lonmax-lonmin) ; % inner figure height 
ver_edge = (0.5-fhi)/2;
cbpos =[C1+0.05  1-0.5*ver_edge  cbw cbh;
        C2+0.05  1-0.5*ver_edge  cbw cbh;
        C1+0.05  L1+0.5*ver_edge   cbw cbh;
        C2+0.05  L1+0.5*ver_edge   cbw cbh];
fz = 10; % font size
for ps = 1:4
    subplot('Position',Positions(ps,:))
    worldmap([latmin latmax],[lonmin lonmax]);
    setm(gca,'Grid','off','MapProjection','miller','parallellabel','off','meridianlabel','off')
    % skip other settings
    cb1=colorbar('horizontal', 'fontsize',fz, 'fontweight', 'bold','Position',cbpos(ps,:)); % color bar definition; for later use
end

So I usually adjust 'Position' parameter. But it never allows me to put all the subplots stick to each other. Because my maps are not perfect square, there is always space between the top and bottom panel. Do you see how to remove it?

Hannah

the cyclist 2022-4-22

在 MATLAB Online 中打开

It's definitely an issue with the map. I swapped in a normal plot, and it fills the space.

I don't have any experience with using worldmap, but it could be that a certain aspect ratio is enforced (perhaps because of the particular projection). That makes sense to me, because if you "stretch" only one dimension, you will no long obey the constraints of the projection.

latmin = -45;

latmax = 65;

lonmin = -160;

lonmax = 168;

fw = 0.5; % figure width

fh = 0.5 ; % figure height

L1 = 0; % row 1 from bottom;

L2 = L1+fh; % row 2 from bottom;

C1 = 0; % column from left

C2 = C1+fw; % column from left

Positions =[C1 L2 fw fh;

C2 L2 fw fh;

C1 L1 fw fh;

C2 L1 fw fh];

cbh = 0.015;

cbw = fw-0.1;

fhi = fw * (latmax-latmin)/(lonmax-lonmin) ; % inner figure height

ver_edge = (0.5-fhi)/2;

cbpos =[C1+0.05 1-0.5*ver_edge cbw cbh;

C2+0.05 1-0.5*ver_edge cbw cbh;

C1+0.05 L1+0.5*ver_edge cbw cbh;

C2+0.05 L1+0.5*ver_edge cbw cbh];

fz = 10; % font size

for ps = 1:4

subplot('Position',Positions(ps,:))

plot(rand(5))

% skip other settings

cb1=colorbar('horizontal', 'fontsize',fz, 'fontweight', 'bold','Position',cbpos(ps,:)); % color bar definition; for later use

end

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