Curve Fitting

Dave Love d.love at dl.ac.uk
Mon Sep 6 08:21:55 EST 1993

Be careful.  Fitting general sums of decaying exponentials is an
ill-conditioned problem for which one is usually cautioned against
general least-squares routines.  There are specialised routines in
some non-free Fortran subroutine libraries that I know of (IMSL,
Harwell and probably CERNlib and others).  Good places to look for a
treatment of the problem might be the journals `Nuclear Instruments
and Methods' and `Computer Physics Communications'.

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