MATLAB: Plotting array elements in different colors

arraycolorMATLABplot

Hello,

Can someone explain how to plot the array elements in different colours I mean how to plot the array elements like from 1:500 in red color then 501:1000 in blue colour 1001:1500 in different colour.

Thankyou.

Best Answer

x=1:1500;
y=rand(1,1500);
plot(x(1:500),y(1:500),'r')
hold on
plot(x(501:1000),y(501:1000),'b')
plot(x(1001:1500),y(1001:1500),'k')
hold off

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Norman - I think that you just want to set the step size in your for loop. Something like

for i = 1 : 100: size(dataSet,2) 
    % do something


end

A simplified example could be

A = rand(63,2000);
w = 500;
v = 100;
for k=1:100:size(A,2)
      if (k+w+-1) > size(A,2) || (k+v+w-1) > size(A,2)
          break;
      end
      dataA = A(:,k:k+w-1);
      fprintf('a) %d:%d ',k,k+w-1);
      % do something
      dataB = A(:,k+v+w:k+v+w-1);
      % do something
      fprintf('b) %d:%d\n',k+w,k+v+w-1);
  end

with output

a) 1:500 b) 501:600
a) 101:600 b) 601:700
a) 201:700 b) 701:800
a) 301:800 b) 801:900
a) 401:900 b) 901:1000
a) 501:1000 b) 1001:1100
a) 601:1100 b) 1101:1200
a) 701:1200 b) 1201:1300
a) 801:1300 b) 1301:1400
a) 901:1400 b) 1401:1500
a) 1001:1500 b) 1501:1600
a) 1101:1600 b) 1601:1700
a) 1201:1700 b) 1701:1800
a) 1301:1800 b) 1801:1900
a) 1401:1900 b) 1901:2000

Best Answer

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