0NOTE 

Tue Jul 26 01:30:25 MST 2005

compared 1994 aND 1991 executables, working on same data:


total 528
-rw-r--r--   1 jar  staff   1853 25 Sep  1994 ldhfit.dat
-rw-r--r--   1 jar  staff   6040 25 Sep  1994 ldhfit.out-1994
-rw-r--r--   1 jar  staff   6040 25 Sep  1994 ldhfit.out
-rw-r--r--   1 jar  staff   7466 19 Jul 00:55 ldhfit.test
-rw-r--r--   1 jar  staff   5646 26 Jul 01:09 ldhfit1991.test
-rw-r--r--   1 jar  staff   1986 26 Jul 01:23 ldhfit.dat1991
-rw-r--r--   1 jar  staff   7567 26 Jul 01:24 ldhfit.test1991


1994 = Simplex-1994/Lib
1991 = Simplex-1991/Ldh

ldhfit.dat1991 = 1991/ldhfit.dat + bounds 0-1e38 added for compat 1994/ldhfit

ldhfit1991.dat1991 = 1991/tests/test.out
	:!cp -p ../../*1/Ldh/tests/test.out ldhfit1991.dat1991



run 1991 test data with ldhfit from 1991 and 1994

1994/ldhfit < 1994/ldhfit.dat1991 > 1994/ldhfit.test1991
1991/ldhfit -sn -dl 1991/ldhfit.dat 1991/tests/test.out



run 1994 test data with ldhfit from 1991 and 1994

1991/ldhfit -sn -dl 1994/ldhfit.dat 1994/ldhfit1991.test
1994/ldhfit < 1994/ldhfit.dat > 1994/ldhfit.test



diff ldhfit.test1991 ldhfit1991.test1991
diff ldhfit1991.test ldhfit.test
	for same data, run with 1991 and 1994 ldhfit progs:
		same parameter estimates and sd
		rms error diffs in 7-9th decimal place = 8-10th sig digit




Tue Jul 19 00:58:46 MST 2005


in this directory:
	ldhfit and powellfit as test functions

	in ./S
		code for S interface - not ported to R

slightly better code than in the directories under ../Simplex/Lib, etc.,
which is 2-3 years older.

see 1-NOTE and 1-README for more information.

see man page, aimplex.1, for discussion of the code.

there are text files that document the simplex fit:
	../Simplex/Doca/*.txt

the nelder-mead paper, a classic, is given as a pdf file:
	../nelder-mead-simplex.pdf