How to extract specific data from the data files?

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hj lee
hj lee il 5 Ott 2020
Commentato: hj lee il 5 Ott 2020
Hello,
CL = [ 0.572526 0.601916 0.631107 ];
CD = [ 0.024868 0.025337 0.025902 ];
How to output the value of CD when CL is 0.6?
I want to use linear interpolation but I don't know how to do.
Thakns for reading.
  2 Commenti
Ameer Hamza
Ameer Hamza il 5 Ott 2020
What model does the data follow? Linear? Polynomial? Or is there some other nonlinear relation between CL and CD?
hj lee
hj lee il 5 Ott 2020
Both are okay! thanks for comment!

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KSSV
KSSV il 5 Ott 2020
Modificato: KSSV il 5 Ott 2020
iwant = interp1(CL,CD,0.6)
This is the procedure:
CL = [ 0.572526 0.601916 0.631107 ];
CD = [ 0.024868 0.025337 0.025902 ];
xi = 0.6 ;
yi = interp1(CL,CD,xi) ;
plot(CL,CD)
hold on
plot(xi,yi,'*r')

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