A subplot with a numerical value

Ive seen the following figure and i wanted to ask if it was possible to have a subplot with only a value like half of the figure. I was able to generate the scatter plots easily but i struggled to generate subplots with just a numerical value

[madhan ravi]

Example ?

[Ahmed Abdulla]

As shown in the figure by the numbers in red and green, the subplot only contains the numerical value. Thats what im aiming to get

Answer 1

[Fangjun Jiang]

s=subplot(3,3,9);
set(s.XAxis,'visible','off');
set(s.YAxis,'visible','off');
t=text(0.5,0.5,num2str(1.2),'color',[1 0 0]);