How can I combine three figures into one and save as single image?

I am trying to plot spectrogram of three separate signals. I need it in a single image file without axes and colorbar, one figure stacked above the other (no blank space in between). I have to generate a large number of such figures for feeding to a transfer learning algorithm for classification.

I need help with combining the figures.

[Jorg Woehl]

Have you looked at nexttile? The following will create three vertically stacked plots... but with (minimal) blank space in between:

t = tiledlayout(3, 1, 'TileSpacing', 'none');

nexttile
% first plot
axis off

nexttile
% second plot
axis off

nexttile
% third plot
axis off

Alternatively, you could use subplot with the Position property, which gives you more control:

subplot('Position', [0 0 1 0.33]) 
% first plot
axis off

subplot('Position', [0 0.33 1 0.33])
% second plot
axis off

subplot('Position', [0 0.66 1 0.33])
% third plot
axis off

[MUHAMED JISHAD T K]

Thanks a lot.. The second method served my purpose.