plotting marker at partcular index

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Thayumanavan 2014-5-19

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评论： Thayumanavan 2014-5-21

I have set of eigen values in array format 19 column 8 eigen values real and imaginary part along with 1 parameter.6000*19 array I am reading the 19 arrays from xcel using xlsread command . I want to insert a marker at a particular index say 1500 while plotting the eigen values plot(Real1,Imag1,'*g',Real2,Imag2,'dg'.....Real8,Imag8)

How to do that?please give ur suggestions.

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Answer 1

Jos (10584) 2014-5-19

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I might have misinterpreted your question ...

To plot a marker at a particular index of a list of (x,y) values, try this example

xy = rand(10,2) ;
IX = 3 ; % mark point 3
plot(xy(:,1),xy(:,2),'b-') ; % blue lines
hold on ;
plot(xy(IX,1),xy(IX,2),'rs') ; % red square marker
hold off ;