mypoly.m

a file for determining a polynomial degrees

function mypoly(x,y,n)
n=input('enter the number of points :');
%x=rand(1,n);y=rand(1,n);
%temp=[x y];
for i=1:n
    temp=[x y];
    %temp=input('enter [x y] :');
    x(i)=temp(1);
    y(i)=temp(2);
end
p=polyfit(x,y,1);
z=polyval(p,x);
y1=p(1)*z+p(2);
plot(x,y,'bo',z,y1);
axis ([0 10 0 10]);