size = [500 600];
figure('units', 'pixels', 'position', [1 1 size], 'visible', 'on');
set(gcf, 'paperunits', 'points', 'paperposition', [1 1 size]);
axes('units', 'pixels', 'position', [50, 300, 400, 200], 'fontsize', 14, 'box', 'on');
plot([0 1], [0.5 0.5]);
text('units', 'normalized', 'position', [0.5 0.5], 'string', 'TEXT', 'fontsize', 14, 'verticalalignment', 'middle', 'horizontalalignment', 'center');
filename = 'out.png';
fprintf('Printing to %s\n', filename);
print('-dpng', '-r0', filename);