In following plots, how can we measure intersect points?

clear all

clc

for y=0.1:0.1:0.3;

G=[];

B=[];

for a=1:1:100

z=0.3;

x=y+sind(a);

G=[G x];

b=z+0.4;

B=[B b];

end

B;

G;

a=1:1:100;

plot(a,G,'-')

hold on

plot(a,B,'-')

end

Answer 1

[Kevin Holly]

for y=0.1:0.1:0.3
    G=[];
    B=[];
    for a=1:1:100
        z=0.3;
        x=y+sind(a);
        G=[G x];
        b=z+0.4;
        B=[B b];
    end
    B;
    G;
    a=1:1:100;
    plot(a,G,'-')
    hold on
    plot(a,B,'-')

    %spline1
    s1 = spline(a,G);
    %spline 2
    s2=spline(a,B);
    % find zeros
    a0 = fzero(@(a) (ppval(s1,a)-ppval(s2,a)), 0) %Intersection point using spline interpolation
end

a0 = 36.8699

a0 = 30.0000

a0 = 23.5782