% Position four figures.

delete(get(0,'children'))
set(0,'DefaultUicontrolUnits','normalized')
figure('units','normalized','pos',[.01 .50 .48 .48])
figure('units','normalized','pos',[.50 .50 .48 .48])
figure('units','normalized','pos',[.01 .01 .48 .44])
figure('units','normalized','pos',[.50 .01 .48 .44])

%delete(get(0,'children'));