I have two vectors d and g with pre-allocated values (I didn't do it and there are over 1000 for both) I am supposed to do a linear fit to find a and b in the equation- g = a*d+b. Please help.

I cannot proceed as I am new to MATLAB and cannot figure out how to find the values of a and b. dimensions : d- 1x101 double and g = 101x200 double.

Would really appreciate it if you write the code for this along with explanation, thank you.

Answer 1

[KSSV]

N = 50 ;
x = 1:N;
y1 = x + randn(1,N);
scatter(x,y1,25,'b','*')
P = polyfit(x,y1,1);
yfit = P(1)*x+P(2);
hold on;
plot(x,yfit,'r-.');

[Mayank Kashyap]

That doesn't help. My vectors are pre-allocated and have different dimensions, I cannot define them again.

[KSSV]

x, y are your pre-defined vectors...