How to find slope of this line
4 views (last 30 days)
Show older comments
I'm trying to find the slope of this linear line but I can't use polyfit because the vectors aren't the same size.
x = [0.0914;0.195;0.292];
y = [-2.89,-3.55,-2.88,-3.10,-3.09,-3.09,-3.28,-3.35;-7.65,-7.75,-7.43,-7.62,-7.60,-7.66,-7.32,-7.68;-11.2,-11.5,-11.6,-11.45,-11.5,-11.5,-11.5,-11.6];
plot(x,y,'o')
grid on
xlabel('Distance-x (m)')
ylabel('Episilon(bottom)/Pj 1/N')
title('Thick Cantilever Negative')
polyfit(x,y,1)
0 Comments
Accepted Answer
Jos (10584)
on 3 May 2019
You can create a complete list of x,y pairs by expanding x to the size of y. Looking at your code, I think a single element of x belongs to a row of y, so:
xx = repmat(x(:), 1, size(y,2))
polyfit(xx, y, 1)
0 Comments
More Answers (0)
See Also
Categories
Find more on Creating and Concatenating Matrices 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!