Getting joint lines in 2-D plot instead of a single line.

I'm trying to plot a Force v/s Angle graph like this:

But I'm getting joint lines like this:

What am I doing wrong? Thank in advance for answering. Have a nice day :)

[Matt J]

What am I doing wrong?

How are we to have any idea what you are doing, when you've provided no code and input data?

Answer 1

[Sulaymon Eshkabilov]

Small correction is needed with the indexing, see this sample code:

X = [ 0 5 10 15 -3 -5];
Y = [2*X.^2+2; 3*X.^2+2; 2.5*X.^2+5;]

Y = 3×6

2.0000 52.0000 202.0000 452.0000 20.0000 52.0000 2.0000 77.0000 302.0000 677.0000 29.0000 77.0000 5.0000 67.5000 255.0000 567.5000 27.5000 67.5000

figure
subplot(211)
plot(X, Y, '-s')
title('Wrong')
Xs=sort(X);
subplot(212)
plot(Xs, Y, '-o')
title('Corrected')

[Vaishali]

Thank you so much !

[Sulaymon Eshkabilov]

Mopst welcome! Glad to be of some help :)