Obtaining the equation of lsline

[Madhu Shurpali]

hello,

I have a hysteresis curve and afer plotting it I can plot a least squares linear fit line by using lsline.

What I want to do is get the slope and intercept of that lilne. Can somebody suggest how to get it?

Thanks
Madhu

[Jos (10584)]

"Madhu Shurpali" <madhu.s...@cvgrp.com> wrote in message <hfl7lv$sls$1...@fred.mathworks.com>...

see POLYFIT

x = 1:10 ;
y = 2 * x + 10 + randn(size(x)) ;
plot(x,y,'bo') ;
h = lsline ;
% use the raw data to get the intercept and slope
p = polyfit(x,y,1)
% or using the line drawn by LSLINE
p2 = polyfit(get(h,'xdata'),get(h,'ydata'),1)

Take care when using lsline on plots with multiple line objects ...

hth
Jos

[Madhu Shurpali]

Thanks a lot for the help.