Plot Grid points with different colours

Hello Everyone

I have two variables

x = linspace(0,25,26)

y = linspace(0,25,26)

and i want to create a graph with x,y axis

where the points where the x<y are going to be coloured in red. Also the points where x > 16 i want the points to be shown in black colour.

Could someone plz guide me on what method to use? I have made a code that creates a grid but i dont know hot to celect these points abd give them the appropriate colour.

Thank you

[Adam Danz]

Duplicate: https://www.mathworks.com/matlabcentral/answers/651643-2-d-plot

Hint: Here's an analogy

x = 1:20;
y = ones(1,20); 
idx = x < 10;
plot(x(idx),y(idx), 'r-o')
hold on
plot(x(~idx),y(~idx), 'b-o')

Answer 1

[Evangelos Rompogiannakis]

Thank you very much! However y is also 1:20 And I need to show all the points of the x,y plot . Should I use area plot to show the whole Area or is it a way that I can show all all points of the x,y plot ?