Passing additional paramaters to nlsList(nlme) fit function
Original question...
is it possible to pass additional parameters to the model function that are known and groupwise constant with nlsList? I could not find something like a "keep this fixed" option in the documentation and the code (my fault...?)
Spencer Graves <spencer.graves <at> pdf.com> writes:
The "nlsList" function does NOT have the common ellipsis ("..." )
argument to support that.
...
If it were my problem, I might make a local copy of the "nlsList"
function and try to modify it to work, at least for my problem. In this
case, "nlsList" is merely a call to "UseMethods". To get beyond that, I
requested 'methods("nlsList")' with the following result:
nlsList.formula nlsList.selfStart*
Thanks, Spencer. When I studied the quinModel example (page 380, Pinheiro/Bates) I noted that it is possible to pass non-varying parameters to nlme by not including them in the fixed=... parameter. As quite a few examples in PB used nlsList for the first approximation (and, as far I understand, nlme does it internally anyway) I had missed this feature of nlme, even if the PB- book heavily use-stained. Dieter