Help fixing different sized plots with tiled layout

I am trying to make a 3 x 3 tiled layout of wide rectangles, each of which has a title. However when I try this, (minimal example below) the top three figures appear slightly smaller than the bottom figures. The question is how do we fix this? I am aware that subplot does not have this issue, however subplot has too much white space between the figures for my purposes. Also I know that if I take the titles out, the figures are all the same size, but I need all the titles to be there.

figure(3);
clf

tiledlayout(3,3,"TileSpacing","compact","Padding","compact");
xlims = [-13,3];
ylims = [-3,3];
for ii = 1:9
    to_plot = zeros(410,170);
    
    nexttile
    % subplot(3,3,ii) % Gets rid of the problem, but leaves too much white
    % space.
    ax = gca;
    hold on
    imagesc(xlims,ylims,to_plot,'Interpolation','bilinear')
 
    shading interp;
    colormap("jet")

    title(ax, "$t = " + num2str(ii) + "$",'interpreter','latex','fontsize',15)
    hold off
    axis equal
    axis off
end

[Cris LaPierre]

I also see that. I can get it to go away if I remove either the 'axis equal' or the title. That doesn't seem right, so I have reported it internally.

tiledlayout(3,3,"TileSpacing","compact","Padding","compact");
xlims = [-13,3];
ylims = [-3,3];
for ii = 1:9
    to_plot = zeros(410,170);
    
    nexttile
    imagesc(xlims,ylims,to_plot)

    title("$t = " + num2str(ii) + "$",'interpreter','latex','fontsize',15)
    % axis equal
    axis off
end

[Sabhrant]

Good observation

Answer 1

[Matt J]

Since you use imagesc to generate the subfigures, it seems to me that you should be using axis image.

tiledlayout(3,3,"TileSpacing","compact","Padding","compact");
xlims = [-13,3];
ylims = [-3,3];
for ii = 1:9
    to_plot = zeros(410,170);
    
    ax(ii)=nexttile;

    imagesc(xlims,ylims,to_plot,'Interpolation','bilinear')
 
    shading interp;
    colormap("jet")

 
    title( "$t = " + ii + "$",'fontsize',15,'interpreter','latex')
    axis off
    axis image
    
end

●

pos_table =array2table(  vertcat(ax.InnerPosition),   VariableNames={'Left','Lower','Width','Height'}, RowNames=compose('t = %d',1:9))

pos_table = 9x4 table
              Left       Lower       Width     Height 
             _______    ________    _______    _______

    t = 1      0.065      0.7468    0.26976    0.13449
    t = 2    0.37012      0.7468    0.26976    0.13449
    t = 3    0.67524      0.7468    0.26976    0.13449
    t = 4      0.065      0.4177    0.26976    0.13449
    t = 5    0.37012      0.4177    0.26976    0.13449
    t = 6    0.67524      0.4177    0.26976    0.13449
    t = 7      0.065    0.088609    0.26976    0.13449
    t = 8    0.37012    0.088609    0.26976    0.13449
    t = 9    0.67524    0.088609    0.26976    0.13449

Answer 2

[Catalytic]

axis equal does not ensure that the plot box reserved for the image will fit around it tightly. For that, you must add axis tight

tiledlayout(3,3,"TileSpacing","compact","Padding","compact");
xlims = [-13,3];
ylims = [-3,3];
for ii = 1:9
    to_plot = zeros(41,17);
    
    ax(ii)=nexttile;


    imagesc(xlims,ylims,to_plot,'Interpolation','bilinear')
    axis off
    axis equal; axis tight
    
    shading interp;
    colormap("jet")


    title( "$t = " + ii + "$",'fontsize',15,'interpreter','latex')


end

●