Point of intersection of two plotted column vectors

2 vues (au cours des 30 derniers jours)
Sandura Shumba
Sandura Shumba le 23 Mai 2020
Commenté : Sandura Shumba le 26 Mai 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);

Réponse acceptée

KSSV
KSSV le 23 Mai 2020
Modifié(e) : KSSV le 25 Mai 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 commentaires
KSSV
KSSV le 25 Mai 2020
Modifié(e) : KSSV le 25 Mai 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 le 26 Mai 2020
Thank you very much

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