Plotting Intersection point on plot
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Hello, I simply have a plot here, but everytime I run the code, I want my plot to include the point where the two lines intersect. Just simply show the intersection point and it's coordinates on the plot. Was hoping there was a way to do this instead of having to click on the intersection point with mouse.
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Star Strider
2020-9-28
Try this:
Cpo = -0.75;a = 3.32;
M = 0.2:0.01:0.8;
Cp = Cpo./sqrt(1-M.^2);
Cp_cr = 2./(a*M.^2) .* ((((2+(a-1)*M.^2)/(a+1)) .^(a/(a-1)))-1);
xisx = interp1((Cp - Cp_cr), M, 0);
yisx = Cpo./sqrt(1-xisx.^2);
figure
plot(M, Cp)
hold on
plot(M, Cp_cr)
plot(xisx, yisx, 'pg', 'MarkerFaceColor','g')
hold off
set(gca, 'YDir','reverse')
legend('Cp', 'Cp\_cr', 'Intersection')
It would have been easier wit your actual code, rather than aan image of it.
.
1 个评论
Mayowa Milburn
2021-3-27
Hi can you do that for simple cases of x=[1 2 3 4 5], y1=[2 4 6 8 10], y2=[3 6 9 12 15]
plot(x,y1)
plot(x,y2)
How do you apply that code to find and plot the intersect in this case?
更多回答（1 个）
Ameer Hamza
2020-9-28
0 个投票
You may also have look at this FEX package: https://www.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections.
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