Coding to find difference between two lines on a x y plane

10 views (last 30 days)
is there a way to generate a code on MatLab that will find the difference between two different lines?
For example, I have a straight line (linear) with the following points (-10,1) (10,1) and I have a nonlinear line on the x y plane and I need to find the difference between the linear and nonlinear curve
  2 Comments
KSSV
KSSV on 18 Oct 2020
Edited: KSSV on 18 Oct 2020
Do you have points i.e (x ,y) for the nonlinesr curve?
If so, make points for line equal in number to curve with same x values...and subtract the y-values.
VBBV
VBBV on 18 Oct 2020
% if true
% code
% end
K = 2.5;
X = linspace(-10,10,100);
Y = K*((X/20)).^3;
Ly = ones(1,100);
Diff = Ly - Y;
plot(X,Diff,'r',X,Ly,'k',X,Y,'b');
legend('Diff','linear','nonlinear');

Sign in to comment.

Answers (1)

Manvi Goel
Manvi Goel on 29 Oct 2020
You can plot the difference between the two lines by simply passing the second argument to the plot function as y - z where y and z are the two lines respectively.
X = linspace(-10,10,100); %line 1
Y = sin(X); %line 2
Z = ones(1,100);
plot(X, Y - Z); %plot for the difference

Categories

Find more on Linear and Nonlinear Regression in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!