how to get the equation of lsline

hi. I have two set of data and I want to get the linear regression. after plotting the data, im using lsline to obtain the regression line but how can I get the equation too ? thanks !

Answer 1

[Star Strider]

You have to calculate it, but that is not difficult.

Example:

figure(1)
scatter(1:10, rand(1, 10))
hl = lsline;
B = [ones(size(hl.XData(:))), hl.XData(:)]\hl.YData(:);
Slope = B(2)
Intercept = B(1)

[farfar]

Thanks!

[Star Strider]

My pleasure!

Answer 2

[Kylie Hansen]

Thought I'd post an alternative answer from this github repository: https://github.com/kykyelric/Marking-Points-Above-Line-of-Best-Fit/blob/master/lsline%20equation

The below code prints a 1x2 matrix where the first value is the slope and the second is the y-int.

h = lsline;
p2 = polyfit(get(h,'xdata'),get(h,'ydata'),1)