Another(?) ADVAN5 Problem
I was able to modify an example I had to run under ADVAN5 on the VAX [6610
VMS 5.5] as a fitting exercise without any errors. However I did stop it
short (by reducing the MAXEVALS, it was taking too long). I then developed
a simple fitting problem with one subject and it ran fine with ADVAN5 and
ADVAN4, except for the S MATRIX ALGORITHMICALLY SINGULAR (with both ADVANs)
which I guess is due to the small number of data points. These were very
simple examples but they seem to work. I would have compiled the program
with the FORTRAN default settings. I'd be happy to try a bigger problem - I
hadn't used these ADVANs before so may have made an error somewhere.
.....