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MFIT /EPSILON

This option is used to specify the desired tolerance. Its interpre-
tation is method dependent. For SIMPLEX and POWELL, it means the rela-
tive deviation of the mean squared difference of two fit iterations. For
SLATEC, which uses non-reduced chi-2, it is the absolute difference be-
tween two iterations. For ANNEAL, its interpretation is totally differ-
ent.
Use default value 0 to let the program guess. In subtle cases, or to
gain speed in case a coarse result is desired, use values around 1D-5
for SIMPLEX and POWELL, and of order 1 for SLATEC. For ANNEAL, see de-
tails in the /METHOD option.
Note that this is not the absolute error of the fit parameters.

Gildas manager
2014-07-01