Richard Franke's test data can now be downloaded from this site. For example, for the MATLAB code of the famous Franke Test Function, open http://www.mathstat.strath.ac.uk/oleg.davydov/Franke_test_data/sdprog/f1.m As another example, the following file contains the 100 point data set used in the report R. Franke, A critical comparison of some methods for interpolation of scattered data, Report NPS-53-79-003, Naval Postgraduate School, 1979. http://www.mathstat.strath.ac.uk/oleg.davydov/Franke_test_data/sddata/ds3.m See also www.richardfranke.com The homepage on www.math.nps.navy.mil as well as anonymous ftp mentioned below may not be available anymore. Oleg Davydov 7 May 2009 ======================================================================== 9/28/97 revised 6/24/99 This file is a copy of the README file on anonymous ftp under ftp/pub/franke, except for this added prelude. To look at the files I have available in sddata and sdprog subdirectories, see the list below. To look at any of those files using your browser here, just open, for example, the file http://www.math.nps.navy.mil/~rfranke/sdprog/f1.m If you have trouble accessing anything you need (or want), send me an email with the problem. Dick Franke ======================================================================== 3/23/94 I intend to have various things in here, eventually. For now there are two subdirectories: sddata and sdprog Data files in pub/franke/sddata .m denotes a matlab m-file, some are functions, some are "open" programs. akima.m Akima's 60 points bigsur.dat Water temperature data off Big Sur, 64 points bigsur.m m-file for Big Sur water temperature data ds1.m 25 point data set in NPS-53-70-003 (data set 3??) ds2.m 33 point data set in NPS-53-70-003 (data set 2) ds3.m 100 point data set in NPS-53-70-003 (data set 1??) ds4.m 200 points: ds3 plus 100 based on curvature of f1 f1.m Function 1 from NPS-53-79-001 f2.m Function 2 from NPS-53-79-001 f3.m Function 3 from NPS-53-79-001 f4.m Function 4 from NPS-53-79-001 f5.m Function 5 from NPS-53-79-001 f6.m Function 6 from NPS-53-79-001 fergo.m Ferguson's data, original fergs.m Ferguson's data, scaled (y x 3) fhk500 500 points designed with functions kes1 and kes2 in mind gniel.m Function from Nielson - IJNME 15(1978) 308-318. kes1.m Function inspired by Salkauskas, p. 150 in Curve and Surface Fitting, Lancaster and Salkauskas. kes2.m Similar, to kes1, but "harder" to fit, perhaps. mbay.dat Monterey Bay depth data - 1669 points moth1.m Moth data from Scientific American moth2.m Moth data from Scientific American sigmoid.m Sigmoid function testdata.dat Compilation of all test data for NPS-53-79-001 vde200.dat F1 at 200 pts, density about proportional to curvature vde200.m same, as m-file vde500.dat F1 at 500 pts, density about proportional to curvature vde500.m same, as m-file vol-3.dat Thinned section of vol87.dat, 873 pts vol-3t.dat vol-3.dat less some contours, 678 pts vol3.m vol-3.dat as m-file vol3t.m vol-3t.dat as m-file vol87.dat Glacier contour data, 8345 points Programs in pub/franke/sdprog some are m-files, some are Fortran 77. f1.m Function 1 from NPS-53-79-003 f2.m Function 2 from NPS-53-79-003 f3.m Function 3 from NPS-53-79-003 f4.m Function 4 from NPS-53-79-003 f5.m Function 5 from NPS-53-79-003 f6.m Function 6 from NPS-53-79-003 ltps.for Local thin plate splines (CAMWA 8(1982) 273-281. qds.for Quadratic Shepard method (IJNME 15(1980) 1691-1704. qdt.for Triangle blended quadratics (IJNME 15(1980) 1691-1704. testf.for Sample Test programs used in NPS-53-79-003 Last changed: April 1, 1998 (no April fool)