Producing a line of best fit with equation
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badfish66
le 24 Avr 2016
Commenté : Image Analyst
le 10 Déc 2021
Hi
I have been using lsline to produce a linear line of bext fit for two datasets. I was wondering if there was a similar command that produced the line of best fit and provided an equation (in the form y=mx+c) for said line.
Many Thanks
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Sebastian Castro
le 24 Avr 2016
There is also the polyfit function in MATLAB. If you specify an order of 1, the output of polyfit will have the two components m and c as you specified.
- Sebastian
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Kylie Hansen
le 16 Fév 2017
Modifié(e) : Image Analyst
le 10 Déc 2021
Thought I'd share an alternate answer from this github repository:
The code below prints a 1x2 matrix where the first value is the slope of the line and the second is the y-int.
Just plug into slope intercept form (y = mx+ b) and you've got the equation.
h = lsline ;
p2 = polyfit(get(h,'xdata'),get(h,'ydata'),1)
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