Hi,
I recently used columns of a matrix as inputs to nls(), which works just
fine, but then I get, for example,
(assuming >nls(stuff)->nl30 was the original command)
>nl30$call
nls(dr[,2]~apowr^(dr[,1])/(b*sqrt(dr[,1])))
Now, I can build a new matrix with same dimensions as dr and use that
to run predict, as in
>predict(nl30,list(dr=newdr)) ,
but I was wondering if there's a way to edit the contents of nl30 itself?
I changed the contents of nl30$call just fine (using expression() on an
edited version of the formula itself), but that does not change whatever
items in nl30 are used by predict().
Again, I recognize that I'm much better off running nls() with more
sensible independent and dependent variables to begin with. I just
would like some help to learn how to read the "guts" of the class
variable that nls() produces. (yes, I know how to do "nl30$m" and so
on; those lists don't show me any of the variables or formulas I can get
using formula(nl30) and other commands with methods for this type of
class variable).
Thanks
Carl
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