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sxxx
2010 Jul 19
1
nls with some coefficients fixed
...of models and really don't want to face all that work!
An alternative would be for nls to recognise fixed coefficients and omit
their values from the start list; the other coefficients might not be
optimal for the values of the fixed, but it does seem to work and wouldn't
need all those SSxxx altering. BUT I don't want to get into nls internals.
Any suggestions?
Thanks in advance,
Keith J