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how to display an output on a plot itself?

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Hi friends,
for this code:
x = linspace(-5,2);
y = -x-3;
z = 2*x
figure(1)
plot(x, y)
hold on
plot(x, z)
legend('x','y','location','best')
ix = interp1(y-z,x,0)
How can I cahnge this code and what coding line I should add so the solution (intersection point of y and z function, i.e., ix = -1) be displayed on the plot itself in a box?
Thank you

Accepted Answer

Sam Chak
Sam Chak on 17 Jan 2023
Edited: Sam Chak on 17 Jan 2023
Do you want to plot something like this?
x = linspace(-5, 2, 701);
y = - x - 3;
z = 2*x;
figure(1)
plot(x, y)
hold on
plot(x, z)
ix = interp1(y-z, x, 0);
iy = 2*ix;
plot(ix, iy, 'o', 'markersize', 15, 'linewidth', 3)
xlabel('x'), grid on
legend('y', 'z', 'location', 'best')
txt = ['\leftarrow intersection: x = ' num2str(ix)];
text(-1+0.25, -2, txt)
  4 Comments
Mohiedin Bagheri
Mohiedin Bagheri on 17 Jan 2023
Edited: Mohiedin Bagheri on 17 Jan 2023
@Sam Chak Thank you very much Sam. I appreciate your help.
All done! Voted and Accepted the Answer :)
Thanks buddy
Sam Chak
Sam Chak on 17 Jan 2023
@Mohiedin Bagheri, Don't mention it. Who knows I'll need your help in future.

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More Answers (1)

Abhinav
Abhinav on 17 Jan 2023
Here is the link to find the intersection point of two line segments/lines. A fast two line intersection point finder based on the line parametric space. Finds the intersection point between two lines if it exists or else submits NaN.

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