[R] Nonlinear regression and categories

[ripley@stats.ox.ac.uk]

Check out nlsList in package nlme, although don't expect to be able to do
several million at once.

On Sat, 9 Nov 2002, Jonathan Greenberg wrote:

>     I'm trying to run a large number of nonlinear regressions on a time
> series dataset, where the data will be formatted something to the effect of:
>
> ObservationID,time,dependentvar
>
> I'll have a number of time and dependentvars for each observation, and I
> want to apply a nonlinear regression to one ObservationID at a time, and I
> want to have a dataset that is the parameter estimates of the equation for
> each observation (as opposed to running them one at a time -- I have several
> million I need to do).  Is there a way to get R to run a nonlinear
> regression based on the above or similar data structure, and return a
> database of ObservationID, parameter1, parameter2, parameter3 for each
> observation?

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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