For MATLAB releases before R2019b, the following example code creates 2x2 plots, using the 'subplot' function and modifies the axes properties such that the subplots fill-up the entire figure window:
subplot(2,2,1);
[X,Y,Z] = peaks(20);
imagesc(Z);
ax = gca;
set(ax,'XTick',[], 'YTick', []);
ax.Position = [0 0.5 0.5 0.5];
subplot(2,2,2);
contour(X,Y,Z)
ax = gca;
set(ax,'XTick',[], 'YTick', []);
ax.Position = [0.5 0.5 0.5 0.5];
subplot(2,2,3);
imagesc(Z);
ax = gca;
set(ax,'XTick',[], 'YTick', []);
ax.Position = [0 0 0.5 0.5];
subplot(2,2,4);
contour(X,Y,Z);
ax = gca;
set(ax,'XTick',[], 'YTick', []);
ax.Position = [0.5 0 0.5 0.5];
There is a slightly elegant way of doing this in R2019b using the 'tiledlayout' function instead of 'subplot':
t = tiledlayout(2,2);
[X,Y,Z] = peaks(20);
nexttile
imagesc(Z)
ax = gca;
set(ax,'XTick',[], 'YTick', []);
nexttile
contour(X,Y,Z)
ax = gca;
set(ax,'XTick',[], 'YTick', []);
nexttile
imagesc(Z)
ax = gca;
set(ax,'XTick',[], 'YTick', []);
nexttile
contour(X,Y,Z)
ax = gca;
set(ax,'XTick',[], 'YTick', []);
t.Padding = 'none';
t.TileSpacing = 'none';
Note that the last two commands get rid of all the space between the tiled plots.
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