lawson_test, a FORTRAN77 code which solves least squares problems, by Charles Lawson, Richard Hanson.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
lawson, a FORTRAN77 code which solves least squares problems, by Charles Lawson, Richard Hanson.
lawson_test1 demonstrates algorithms HFTI and HS1 for solving least squares problems, and algorithm COV for computing the associated covariance matrix.
lawson_test2 demonstrates algorithms HFTI for solving least squares problems, and algorithm COV for computing the associated unscaled covariance matrix.
lawson_test3 demonstrates the use of routine SVDRS to compute the singular value decomposition of a matrix, and to solve a related least squares linear system.
lawson_test4 demonstrates singular value analysis with SVA.
lawson_test5 demonstrates the BNDACC and BNDSOL routines to handle least squares problems with a banded matrix.
lawson_test6 demonstrates the LDP routine.