Point of intersection of two plotted column vectors

Question

Sandura Shumba 2020-5-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/531173-point-of-intersection-of-two-plotted-column-vectors

评论： Sandura Shumba 2020-5-26

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);

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Answer 1

KSSV 2020-5-23

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/531173-point-of-intersection-of-two-plotted-column-vectors#answer_437033

编辑：KSSV 2020-5-25

在 MATLAB Online 中打开

This your function.....go for it.

https://in.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections?focused=5165138&tab=function

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')