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Point of intersection of two plotted column vectors

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Sandura Shumba
Sandura Shumba el 23 de Mayo de 2020
Comentada: Sandura Shumba el 26 de Mayo de 2020
Hi, I am very new to matlab and i was hopping someone could assist me with this simple problem I have two plotted lines FAR and FRR. FAR and FRR are two column vectors. I simply need to find the point of intersection, i just need the value where the intersection happens. Could someone please assist. My code is as follows
FRR FAR
1 0
0.984375 0.005331753555
0.953125 0.06575829384
0.8828125 0.1279620853
0.828125 0.1800947867
0.78125 0.2458530806
0.703125 0.3382701422
0.46875 0.4502369668
0.265625 0.5805687204
0.0859375 0.7357819905
plot(FAR);
hold;
plot(FRR);

Respuesta aceptada

KSSV
KSSV el 23 de Mayo de 2020
Editada: KSSV el 25 de Mayo de 2020
This your function.....go for it.
data = [1 0
0.984375 0.005331753555
0.953125 0.06575829384
0.8828125 0.1279620853
0.828125 0.1800947867
0.78125 0.2458530806
0.703125 0.3382701422
0.46875 0.4502369668
0.265625 0.5805687204
0.0859375 0.7357819905] ;
[m,n] = size(data) ;
FRR = data(:,1) ;
FAR = data(:,2) ;
L1 = [1:m ; FRR'] ;
L2 = [1:m ; FAR'] ;
P = InterX(L1,L2) ;
figure
hold on
plot(L1(1,:),L1(2,:))
plot(L2(1,:),L2(2,:))
plot(P(1),P(2),'*k')
  4 comentarios
KSSV
KSSV el 25 de Mayo de 2020
Editada: KSSV el 25 de Mayo de 2020
I have edited the answer check it. You need to download the function interX and save it in your working folder.
Sandura Shumba
Sandura Shumba el 26 de Mayo de 2020
Thank you very much

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