I have 100 data scattered across 100 X 100 size plot. I need to partition the plot into four sub-sections across the center. Can anyone help me.

close all

clear

clc

n=100

for h=1:1

for i=1:1:n

if(i<=25)

S(i).xd=randi([0,40]);

S(i).yd=randi([0,40]);

end

if((i>25)&&(i<=50))

S(i).xd=randi([60,100]);

S(i).yd=randi([0,40]);

end

if((i>50)&&(i<=75))

S(i).xd=randi([0,40]);

S(i).yd=randi([60,100]);

end

if(i>75)

S(i).xd=randi([60,100]);

S(i).yd=randi([60,100]);

end

XR(i)=S(i).xd;

YR(i)=S(i).yd;

figure(1)

plot(XR(i),YR(i),'kp','MarkerSize', 8);

drawnow;

hold on;

end

end

[John Doe]

What's the purpose?

[HABILA]

I want it to look more distinct.

Answer 1

[Stephan]

starting from R2018b you can use xline and yline:

close all
clear
clc
n=100
hold on
for h=1:1
for i=1:1:n
  if(i<=25)
      S(i).xd=randi([0,40]);
      S(i).yd=randi([0,40]);
  end
  if((i>25)&&(i<=50))
      S(i).xd=randi([60,100]);
      S(i).yd=randi([0,40]);        
  end
  if((i>50)&&(i<=75))
      S(i).xd=randi([0,40]);
      S(i).yd=randi([60,100]);        
  end
  if(i>75)
      S(i).xd=randi([60,100]);
      S(i).yd=randi([60,100]);        
  end
  XR(i)=S(i).xd;
  YR(i)=S(i).yd;
  figure(1)
  plot(XR(i),YR(i),'kp','MarkerSize', 8);
  drawnow;
end
end
xline(50);
yline(50);
hold off

[HABILA]

thank you so much for your help. but i am using matlab 2015 version. This was just a small section of my code. I can't change the matlab version.

[Stephan]

then build them by hand:

x_line = [50 50; 0 100];
y_line = [0 100; 50 50];
plot(x_line(1,:),y_line(1,:),'k')
plot(x_line(2,:),y_line(2,:),'k')

[HABILA]

This one worked perfect. Thank You so much.