Yes.
% A strange small size to be sure, that it works:
set(groot, 'defaultAxesPosition', [0.25, 0.25, 0.2, 0.2])
figure;
plot(1:10)
This is a bad idea, because it modifies all folling axes objects. It is smarter to do this for your own figures only:
% Reset the stuff from above:
set(groot, 'defaultAxesPosition', get(groot, 'factoryAxesPosition'))
figure('defaltAxesPosition', [0.55, 0.55, 0.2, 0.2])
plot(1:10)
Using 0 as root object is outdated since 2014. Prefer groot.
