lawson_test

lawson_test, a FORTRAN77 code which solves least squares problems, by Charles Lawson, Richard Hanson.

Licensing:

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Related Data and Programs:

lawson, a FORTRAN77 code which solves least squares problems, by Charles Lawson, Richard Hanson.

Source Code:

lawson_test1 demonstrates algorithms HFTI and HS1 for solving least squares problems, and algorithm COV for computing the associated covariance matrix.

• lawson_test1.f, a sample problem.
• lawson_test1.sh, commands to compile, link and run the sample problem.
• lawson_test1.txt, the output file.

lawson_test2 demonstrates algorithms HFTI for solving least squares problems, and algorithm COV for computing the associated unscaled covariance matrix.

• lawson_test2.f, a sample problem.
• lawson_test2.sh, commands to compile, link and run the sample problem.
• lawson_test2.txt, the output file.

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_test3.f, a sample problem.
• lawson_test3.sh, commands to compile, link and run the sample problem.
• lawson_test3.txt, the output file.

lawson_test4 demonstrates singular value analysis with SVA.

• lawson_test4.f, a sample problem.
• lawson_test4.sh, commands to compile, link and run the sample problem.
• lawson_test4_input.txt, the input file.
• lawson_test4.txt, the output file.

lawson_test5 demonstrates the BNDACC and BNDSOL routines to handle least squares problems with a banded matrix.

• lawson_test5.f, a sample problem.
• lawson_test5.sh, commands to compile, link and run the sample problem.
• lawson_test5.txt, the output file.

lawson_test6 demonstrates the LDP routine.

• lawson_test6.f, a sample problem.
• lawson_test6.sh, commands to compile, link and run the sample problem.
• lawson_test6.txt, the output file.