I am just trying to get used to the polyfit and polyval function.
My question says to use the polyfit and polyval functions to approximate price for N=1 N=5 N=10 and plot the approximation
I have my data file as a 15x5 double with prices being the 5th column day being the first column. I have written.
day = Data(:,1));
price =Data(:,5) ;
T = table(day, price);
for i=[1 5 10]
[p,~,mu] = polyfit(T.day, T.price, i);
f = polyval(p,day,,mu);
Im just wondering if I am correct in how I have done that. the approximations seem in line with the graph but I cant see were I've approximated price