“lsa-poly” is a polynomial least square fitting tool. e.g.: lsa-poly -f data.dat -x 1 -y 2 -n “-7 -2 0 4” -oe will fit column 2 with column 1 of data.dat, and the fitting function consists of x^-7. x^-2, x^0 and x^4 terms. ===================== T