`In matlab the lsline command fits a line through a set of plotted data
points. The overdetermined system can be solved in a least squares
sense by simply . The command p=polyfit(t,y,n)
gives the coefficients of the degree polynomial which fits
the data points in a least squares sense. To calculate
the values of this polynomial at points we use polyval(p,x).
`

Adrian Sandu 2001-08-26