test_approx_test

test_approx_test, a MATLAB program which calls test_approx() for sets of test data for approximation algorithms.

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:

test_approx, a MATLAB library which defines test problems for approximation, provided as a set of (x,y) data.

Source Code:

• test_approx_test.m, calls all the tests;
• test_approx_test.sh, runs all the tests;
• test_approx_test.txt, the output file.

• test_approx_test01.m, shows how P00_TITLE can be called.
• test_approx_test02.m, shows how P00_STORY can be called.
• test_approx_test03.m, uses polynomial interpolation on data vector problems.
• test_approx_test04.m, uses linear spline interpolation on all problems.
• test_approx_test05.m, uses Overhauser spline interpolation on all problems.
• test_approx_test06.m, uses cubic spline interpolation on all problems.
• test_approx_test07.m, plots an Overhauser spline interpolant for problem 7.
• test_approx_test08.m, plots a cubic spline interpolant for problem 7.
• test_approx_test09.m, uses B spline approximation on all problems.
• test_approx_test10.m, plots a B spline approximant for problem 7.
• test_approx_test11.m, plots a beta spline approximant for problem 7.
• test_approx_test12.m, plots a Bernstein spline approximant for problem 7.
• test_approx_test13.m, plots a cubic spline interpolant for problem 5.

TEST07 creates data files for an Overhauser spline interpolant to data set 7.

• test07_data.txt the data.
• test07_approx.txt the interpolant values.
• test07.png a PNG image of the data and interpolant.

TEST08 creates data files for a cubic spline interpolant to data set 7.

• test08_data.txt the data.
• test08_approx.txt the interpolant values.
• test08.png a PNG image of the data and interpolant.

TEST10 creates data files for a B-spline approximant to data set 7.

• test10_data.txt the data.
• test10_approx.txt the approximant values.
• test10.png a PNG image of the data and approximant.

TEST11 creates data files for a beta spline approximant to data set 7:

• test11_data.txt the data.
• test11_approx.txt the approximant values.
• test11.png a PNG image of the data and approximant.

TEST12 creates data files for a Bernstein approximant to data set 5.

• test12_data.txt the data.
• test12_approx.txt the interpolant values.
• test12.png a PNG image of the data and approximant.

TEST13 creates data files for a cubic spline interpolant to data set 5.

• test13_data.txt the data.
• test13_approx.txt the interpolant values.
• test13.png a PNG image of the data and interpolant.